NOPI导出execl 多个sheet,一列图片
作者：互联网
NPOI API: http://www.cnblogs.com/atao/archive/2009/11/15/1603528.html
http://blog.csdn.net/pan_junbiao/article/details/39717443 -- NPOI使用手册
http://www.cnblogs.com/wei325/p/4748324.html
每一张表只能有一个HSSFPatriarch对象，如果把它的创建放到了setPic方法中，那么一行只会出现一张图片，最后的图片会消掉之前的图片。也不能放到for循环里
HSSFClientAnchor(dx1,dy1,dx2,dy2,col1,row1,col2,row2)的参数，有必要在这里说明一下：
dx1：起始单元格的x偏移量，如例子中的255表示直线起始位置距A1单元格左侧的距离；
dy1：起始单元格的y偏移量，如例子中的125表示直线起始位置距A1单元格上侧的距离；
dx2：终止单元格的x偏移量，如例子中的1023表示直线起始位置距C3单元格左侧的距离；
dy2：终止单元格的y偏移量，如例子中的150表示直线起始位置距C3单元格上侧的距离；
col1：起始单元格列序号，从0开始计算；
row1：起始单元格行序号，从0开始计算，如例子中col1=0,row1=0就表示起始单元格为A1；
col2：终止单元格列序号，从0开始计算；
row2：终止单元格行序号，从0开始计算，如例子中col2=2,row2=2就表示起始单元格为C3；
//添加多个图片时:多个pic应该share同一个DrawingPatriarch在同一个sheet里面。
//获取枚举类型的Display特性的name值
public string GetEnumTxt(Enum eEnum)
{
var enumType = eEnum.GetType();
var field = enumType.GetField(eEnum.ToString());
var display = field.GetCustomAttributes(typeof(DisplayAttribute), false).FirstOrDefault() as DisplayAttribute;
return display != null ? display.Name : eEnum.ToString();
}
</span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> setPic(HSSFWorkbook workbook, HSSFPatriarch patriarch,<span style="color: #0000ff;">string</span> path, ISheet sheet, <span style="color: #0000ff;">int</span> rowline, <span style="color: #0000ff;">int</span><span style="color: #000000;"> col)
{
</span><span style="color: #0000ff;">if</span>(<span style="color: #0000ff;">string</span>.IsNullOrEmpty(path))<span style="color: #0000ff;">return</span><span style="color: #000000;">;
</span><span style="color: #0000ff;">byte</span>[] bytes =<span style="color: #000000;"> System.IO.File.ReadAllBytes(Server.MapPath(path));
</span><span style="color: #0000ff;">int</span> pictureIdx =<span style="color: #000000;"> workbook.AddPicture(bytes, PictureType.JPEG);
</span><span style="color: #008000;">//</span><span style="color: #008000;"> 插图片的位置 HSSFClientAnchor（dx1,dy1,dx2,dy2,col1,row1,col2,row2) 后面再作解释</span>
HSSFClientAnchor anchor = <span style="color: #0000ff;">new</span> HSSFClientAnchor(<span style="color: #800080;">70</span>, <span style="color: #800080;">10</span>, <span style="color: #800080;">0</span>, <span style="color: #800080;">0</span>, col, rowline, col+<span style="color: #800080;">1</span>, rowline + <span style="color: #800080;">1</span><span style="color: #000000;">);
</span><span style="color: #008000;">//</span><span style="color: #008000;">把图片插到相应的位置</span>
HSSFPicture pict =<span style="color: #000000;"> (HSSFPicture)patriarch.CreatePicture(anchor, pictureIdx);
}</span></pre>
View Code
private void setPic(HSSFWorkbook workbook, HSSFPatriarch patriarch,string path, ISheet sheet, int rowline, int col)
{
if(string.IsNullOrEmpty(path))return;
byte[] bytes = System.IO.File.ReadAllBytes(Server.MapPath(path));
int pictureIdx = workbook.AddPicture(bytes, PictureType.JPEG);
// 插图片的位置 HSSFClientAnchor（dx1,dy1,dx2,dy2,col1,row1,col2,row2) 后面再作解释
HSSFClientAnchor anchor = new HSSFClientAnchor(70, 10, 0, 0, col, rowline, col+1, rowline + 1);
//把图片插到相应的位置
HSSFPicture pict = (HSSFPicture)patriarch.CreatePicture(anchor, pictureIdx);
}
View Code
导出多个sheet,一列图片
/// <summary>
/// 导出EXCEL,可以导出多个sheet(图片)
/// </summary>
/// <param name="dtSources">sheet数据源</param>
/// <param name="lstColname">sheet列名数据</param>
/// <param name="sheetname">sheet名</param>
/// <param name="filename">文件名</param>
/// <param name="mColImage">图像列</param>
/// <returns></returns>
public static string ExporMultiSheetImage(List<DataTable> dtSources, List<List<string>> lstColname, List<string> sheetname, string filename,int mColImage)
{
//创建工作薄
IWorkbook workbook = new HSSFWorkbook();
string FileName = filename + ".xls";
for (int k = 0; k < dtSources.Count; k++)
{
//DataTable dt = dtSources[k];
int iSheetCount = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(dtSources[k].Rows.Count) / 10000));
iSheetCount = iSheetCount == 0 ? 1 : iSheetCount;
</span><span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> iSheetIndex = <span style="color: #800080;">0</span>; iSheetIndex < iSheetCount; iSheetIndex++<span style="color: #000000;">)
{
</span><span style="color: #0000ff;">#region</span> 图最大列
<span style="color: #0000ff;">int</span> mImageColMerage = <span style="color: #800080;">0</span>; <span style="color: #008000;">//</span><span style="color: #008000;"> 图最大列</span>
Dictionary<<span style="color: #0000ff;">int</span>, List<<span style="color: #0000ff;">string</span>>> dicImagePath = <span style="color: #0000ff;">new</span> Dictionary<<span style="color: #0000ff;">int</span>, List<<span style="color: #0000ff;">string</span>>><span style="color: #000000;">();
</span><span style="color: #0000ff;">if</span> (mColImage > -<span style="color: #800080;">1</span><span style="color: #000000;">)
{
List</span><<span style="color: #0000ff;">int</span>> lstImageColLen = <span style="color: #0000ff;">new</span> List<<span style="color: #0000ff;">int</span>><span style="color: #000000;">();
</span><span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> i = iSheetIndex * <span style="color: #800080;">10000</span>; i < dtSources[k].Rows.Count; i++<span style="color: #000000;">)
{
List</span><<span style="color: #0000ff;">string</span>> lstImagePath = dtSources[k].Rows[i][mColImage].ToString().Trim(<span style="color: #800000;">'</span><span style="color: #800000;">,</span><span style="color: #800000;">'</span>).Split(<span style="color: #0000ff;">new</span> <span style="color: #0000ff;">char</span>[] { <span style="color: #800000;">'</span><span style="color: #800000;">,</span><span style="color: #800000;">'</span><span style="color: #000000;"> }, StringSplitOptions.RemoveEmptyEntries).ToList();
dicImagePath[i] </span>=<span style="color: #000000;"> lstImagePath;
lstImageColLen.Add(lstImagePath.Count());
}
mImageColMerage </span>=<span style="color: #000000;"> lstImageColLen.Max();
}
</span><span style="color: #0000ff;">#endregion</span>
<span style="color: #008000;">//</span><span style="color: #008000;">create sheet </span>
<span style="color: #0000ff;">string</span> sheetName = <span style="color: #0000ff;">string</span><span style="color: #000000;">.Empty;
</span><span style="color: #0000ff;">if</span> (iSheetCount><span style="color: #800080;">1</span><span style="color: #000000;">)
{
sheetName </span>= sheetname[k] +<span style="color: #000000;"> iSheetIndex;
}
</span><span style="color: #0000ff;">else</span><span style="color: #000000;">
{
sheetName </span>=<span style="color: #000000;"> sheetname[k];
}
ISheet sheet </span>=<span style="color: #000000;"> workbook.CreateSheet(sheetName);
sheet.PrintSetup.Landscape </span>= <span style="color: #0000ff;">true</span>; <span style="color: #008000;">//</span><span style="color: #008000;">是否横向排版</span>
sheet.FitToPage = <span style="color: #0000ff;">false</span>; <span style="color: #008000;">//</span><span style="color: #008000;">是否自适应页面</span>
sheet.PrintSetup.Scale = <span style="color: #800080;">50</span>; <span style="color: #008000;">//</span><span style="color: #008000;">缩放比例
</span><span style="color: #008000;">//</span><span style="color: #008000;">填充列标题以及样式 </span>
<span style="color: #0000ff;">int</span> rowsNum = <span style="color: #800080;">0</span>; <span style="color: #008000;">//</span><span style="color: #008000;">行号 </span>
IRow headerRow =<span style="color: #000000;"> sheet.CreateRow(rowsNum);
ICellStyle headStyle </span>=<span style="color: #000000;"> workbook.CreateCellStyle();
headStyle.Alignment </span>=<span style="color: #000000;"> HorizontalAlignment.CENTER;
headerRow.HeightInPoints </span>= <span style="color: #800080;">20</span><span style="color: #000000;">;
headStyle.VerticalAlignment </span>=<span style="color: #000000;"> VerticalAlignment.CENTER;
</span><span style="color: #008000;">//</span><span style="color: #008000;">换行
</span><span style="color: #008000;">//</span><span style="color: #008000;">headStyle.WrapText = true;</span>
IFont font = workbook.CreateFont();
font.FontHeightInPoints = 13;
font.Boldweight = 700;
headStyle.SetFont(font);
</span><span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> i = <span style="color: #800080;">0</span>; i < lstColname[k].Count; i++<span style="color: #000000;">)
{
</span><span style="color: #0000ff;">if</span> (i <<span style="color: #000000;"> mColImage)
{
</span><span style="color: #008000;">//</span><span style="color: #008000;">合并列前</span>
headerRow.CreateCell(i, CellType.STRING).SetCellValue(lstColname[k][i]);
headerRow.GetCell(i).CellStyle = headStyle;
}
else if (mColImage > -1 && i == mColImage)
{
headerRow.CreateCell(i, CellType.STRING).SetCellValue(lstColname[k][i]);
headerRow.GetCell(i).CellStyle = headStyle;
sheet.AddMergedRegion(new CellRangeAddress(0, 0, mColImage, mColImage + mImageColMerage));
}
else
{
//合并列后
headerRow.CreateCell(i + mImageColMerage, CellType.STRING).SetCellValue(lstColname[k][i]);
headerRow.GetCell(i + mImageColMerage).CellStyle = headStyle;
}
//sheet.AutoSizeColumn(i);
sheet.SetColumnWidth(i, 5000); //列宽
//headerRow.Cells[i].SetCellValue(new HSSFRichTextString("\r\n")); //强制换行
}
ICellStyle cellStyle </span>=<span style="color: #000000;"> workbook.CreateCellStyle();
cellStyle.Alignment </span>=<span style="color: #000000;"> HorizontalAlignment.CENTER;
cellStyle.VerticalAlignment </span>=<span style="color: #000000;"> VerticalAlignment.CENTER;
IFont cellfont </span>=<span style="color: #000000;"> workbook.CreateFont();
cellfont.FontHeightInPoints </span>= <span style="color: #800080;">10</span><span style="color: #000000;">;
cellStyle.SetFont(cellfont);
cellStyle.WrapText </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
</span><span style="color: #0000ff;">#region</span> MyRegion
<span style="color: #008000;">//</span><span style="color: #008000;">填充数据行 </span>
IRow dataRow = <span style="color: #0000ff;">null</span><span style="color: #000000;">;
rowsNum </span>= <span style="color: #800080;">1</span>; <span style="color: #008000;">//</span><span style="color: #008000;">行号，从第2行开始 </span>
<span style="color: #808080;">///</span><span style="color: #008000;"> patriarch 画图的顶级管理器，一个sheet只能获取一个（一定要注意这点）</span>
HSSFPatriarch patriarch =<span style="color: #000000;"> (HSSFPatriarch)sheet.CreateDrawingPatriarch();
</span><span style="color: #008000;">//</span><span style="color: #008000;">填充内容</span>
<span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> i = iSheetIndex * <span style="color: #800080;">10000</span>; i < dtSources[k].Rows.Count; i++<span style="color: #000000;">)
{
dataRow </span>= sheet.CreateRow(i + <span style="color: #800080;">1</span><span style="color: #000000;">);
</span><span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> j = <span style="color: #800080;">0</span>; j < dtSources[k].Columns.Count; j++<span style="color: #000000;">)
{
</span><span style="color: #008000;">//</span><span style="color: #008000;">sheet.SetColumnWidth(j, 5000);
</span><span style="color: #008000;">//</span><span style="color: #008000;">sheet.AutoSizeColumn(j);</span>
<span style="color: #0000ff;">if</span> (j <<span style="color: #000000;"> mColImage)
{
</span><span style="color: #008000;">//</span><span style="color: #008000;">合并列前</span>
dataRow.CreateCell(j).SetCellValue(dtSources[k].Rows[i][j].ToString());
dataRow.GetCell(j).CellStyle = cellStyle;
}
else if (mColImage > -1 && j == mColImage)
{
int mImgIndex = 0;
foreach (var item in dicImagePath[i])
{
string imgPath = HttpContext.Current.Server.MapPath(item);
if (File.Exists(imgPath))
{
byte[] bytes = System.IO.File.ReadAllBytes(imgPath);
int pictureIdx = workbook.AddPicture(bytes, PictureType.JPEG);
///// patriarch 画图的顶级管理器，一个sheet只能获取一个（一定要注意这点）
//HSSFPatriarch patriarch = (HSSFPatriarch)sheet.CreateDrawingPatriarch();
// 插图片的位置 HSSFClientAnchor（dx1,dy1,dx2,dy2,col1,row1,col2,row2)
//图片左上角为（col, row）第row+1行col+1列，右下角为（ col +1, row +1）第 col +1+1行row +1+1列，宽为100，高为50
HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 1000, 250, mColImage + mImgIndex, i + 1, mColImage + mImgIndex, i + 1);
//把图片插到相应的位置
HSSFPicture pict = (HSSFPicture)patriarch.CreatePicture(anchor, pictureIdx);
//pict.Resize(0.7); //用图片原始大小来显示
}
mImgIndex++;
}
dataRow.CreateCell(j).SetCellValue("");
dataRow.GetCell(j).CellStyle = cellStyle;
sheet.AddMergedRegion(new CellRangeAddress(i + 1, i + 1, mColImage, mColImage + mImageColMerage));
}
else
{
//合并列后
dataRow.CreateCell(j + mImageColMerage).SetCellValue(dtSources[k].Rows[i][j].ToString());
dataRow.GetCell(j + mImageColMerage).CellStyle = cellStyle;
}
}
}
</span><span style="color: #0000ff;">#endregion</span><span style="color: #000000;">
}
}
</span><span style="color: #0000ff;">string</span> strPhysicsPath = HttpContext.Current.Server.MapPath(Config.AccPath + <span style="color: #800000;">"</span><span style="color: #800000;">Temp/Export</span><span style="color: #800000;">"</span><span style="color: #000000;">);
</span><span style="color: #0000ff;">if</span> (!<span style="color: #000000;">Directory.Exists(strPhysicsPath))
{
Directory.CreateDirectory(strPhysicsPath);
}
</span><span style="color: #008000;">//</span><span style="color: #008000;">string resultUrl = Config.LogPath.Replace("~", HttpContext.Current.Request.Url.Host + ":" + HttpContext.Current.Request.Url.Port) + "Temp/" + DateTime.Today.Year;</span>
<span style="color: #0000ff;">string</span> tempUrl = <span style="color: #800000;">"</span><span style="color: #800000;">/</span><span style="color: #800000;">"</span> + DateTime.Today.ToString(<span style="color: #800000;">"</span><span style="color: #800000;">MMdd-</span><span style="color: #800000;">"</span>) + Guid.NewGuid().ToString() + <span style="color: #800000;">"</span><span style="color: #800000;">.xls</span><span style="color: #800000;">"</span><span style="color: #000000;">;
strPhysicsPath </span>= strPhysicsPath.TrimEnd(<span style="color: #800000;">'</span><span style="color: #800000;">\\</span><span style="color: #800000;">'</span>) +<span style="color: #000000;"> tempUrl;
</span><span style="color: #008000;">//</span><span style="color: #008000;">-------</span>
<span style="color: #0000ff;">using</span> (MemoryStream ms = <span style="color: #0000ff;">new</span><span style="color: #000000;"> MemoryStream())
{
ms.Flush();
ms.Position </span>= <span style="color: #800080;">0</span><span style="color: #000000;">;
workbook.Write(ms);
</span><span style="color: #0000ff;">using</span> (FileStream fs = <span style="color: #0000ff;">new</span><span style="color: #000000;"> FileStream(strPhysicsPath, FileMode.Create, FileAccess.Write))
{
</span><span style="color: #0000ff;">byte</span>[] fData =<span style="color: #000000;"> ms.ToArray();
fs.Write(fData, </span><span style="color: #800080;">0</span><span style="color: #000000;">, fData.Length);
fs.Flush();
}
LogHelper.WriteExportLog(filename);
</span><span style="color: #0000ff;">return</span> Config.AccPath.Replace(<span style="color: #800000;">"</span><span style="color: #800000;">~</span><span style="color: #800000;">"</span>, <span style="color: #800000;">""</span>) + <span style="color: #800000;">"</span><span style="color: #800000;">Temp/Export</span><span style="color: #800000;">"</span> +<span style="color: #000000;"> tempUrl;
}
</span><span style="color: #0000ff;">#region</span> 浏览器下载
<span style="color: #008000;">//</span><span style="color: #008000;">供浏览器下载Excel
</span><span style="color: #008000;">//</span><span style="color: #008000;">if (HttpContext.Current.Request.Browser.Browser == "IE")
</span><span style="color: #008000;">//</span><span style="color: #008000;"> FileName = HttpUtility.UrlEncode(FileName);
</span><span style="color: #008000;">//</span><span style="color: #008000;">using (MemoryStream ms = new MemoryStream())
</span><span style="color: #008000;">//</span><span style="color: #008000;">{
</span><span style="color: #008000;">//</span><span style="color: #008000;"> ms.Position = 0;
</span><span style="color: #008000;">//</span><span style="color: #008000;"> workbook.Write(ms);
</span><span style="color: #008000;">//</span><span style="color: #008000;"> ms.Flush();
</span><span style="color: #008000;">//</span><span style="color: #008000;"> HttpContext curContext = HttpContext.Current;
</span><span style="color: #008000;">//</span> <span style="color: #008000;">//</span><span style="color: #008000;"> 设置编码和附件格式
</span><span style="color: #008000;">//</span><span style="color: #008000;"> curContext.Response.ContentType = "application/vnd.ms-excel";
</span><span style="color: #008000;">//</span><span style="color: #008000;"> curContext.Response.ContentEncoding = Encoding.UTF8;
</span><span style="color: #008000;">//</span><span style="color: #008000;"> curContext.Response.Charset = "";
</span><span style="color: #008000;">//</span><span style="color: #008000;"> curContext.Response.AppendHeader("Content-Disposition",
</span><span style="color: #008000;">//</span><span style="color: #008000;"> "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8));
</span><span style="color: #008000;">//</span><span style="color: #008000;"> curContext.Response.BinaryWrite(ms.GetBuffer());
</span><span style="color: #008000;">//</span><span style="color: #008000;"> ms.Close();
</span><span style="color: #008000;">//</span><span style="color: #008000;"> ms.Dispose();
</span><span style="color: #008000;">//</span><span style="color: #008000;"> curContext.Response.End();
</span><span style="color: #008000;">//</span><span style="color: #008000;">}</span>
<span style="color: #0000ff;">#endregion</span><span style="color: #000000;">
}</span></pre>
View Code
导出EXCEL,可以导出多个sheet
/// <summary>
/// 导出EXCEL,可以导出多个sheet
/// </summary>
/// <param name="dtSources">原始数据数组类型</param>
/// <param name="strFileName">路径</param>
public static string ExporMultiSheet(DataTable[] dtSources, List<List<string>> lstname, List<string> sheetname, string filename)
{
//创建工作薄
IWorkbook workbook = new HSSFWorkbook();
</span><span style="color: #0000ff;">string</span> FileName = filename + <span style="color: #800000;">"</span><span style="color: #800000;">.xls</span><span style="color: #800000;">"</span><span style="color: #000000;">;
</span><span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> k = <span style="color: #800080;">0</span>; k < dtSources.Length; k++<span style="color: #000000;">)
{
ISheet sheet </span>=<span style="color: #000000;"> workbook.CreateSheet(sheetname[k]);
</span><span style="color: #008000;">//</span><span style="color: #008000;">设置列宽</span>
sheet.SetColumnWidth(<span style="color: #800080;">0</span>, <span style="color: #800080;">30</span> * <span style="color: #800080;">256</span><span style="color: #000000;">);
sheet.SetColumnWidth(</span><span style="color: #800080;">1</span>, <span style="color: #800080;">30</span> * <span style="color: #800080;">256</span><span style="color: #000000;">);
sheet.SetColumnWidth(</span><span style="color: #800080;">2</span>, <span style="color: #800080;">20</span> * <span style="color: #800080;">256</span><span style="color: #000000;">);
sheet.SetColumnWidth(</span><span style="color: #800080;">3</span>, <span style="color: #800080;">20</span> * <span style="color: #800080;">256</span><span style="color: #000000;">);
sheet.SetColumnWidth(</span><span style="color: #800080;">4</span>, <span style="color: #800080;">20</span> * <span style="color: #800080;">256</span><span style="color: #000000;">);
sheet.SetColumnWidth(</span><span style="color: #800080;">5</span>, <span style="color: #800080;">25</span> * <span style="color: #800080;">256</span><span style="color: #000000;">);
</span><span style="color: #008000;">//</span><span style="color: #008000;">填充表头
</span><span style="color: #008000;">//</span><span style="color: #008000;">填充列标题以及样式 </span>
<span style="color: #0000ff;">int</span> rowsNum = <span style="color: #800080;">0</span>; <span style="color: #008000;">//</span><span style="color: #008000;">行号 </span>
IRow headerRow =<span style="color: #000000;"> sheet.CreateRow(rowsNum);
ICellStyle headStyle </span>=<span style="color: #000000;"> workbook.CreateCellStyle();
headStyle.Alignment </span>=<span style="color: #000000;"> HorizontalAlignment.CENTER;
headStyle.VerticalAlignment </span>=<span style="color: #000000;"> VerticalAlignment.CENTER;
</span><span style="color: #008000;">//</span><span style="color: #008000;">换行</span>
headStyle.WrapText = <span style="color: #0000ff;">true</span><span style="color: #000000;">;
headerRow.HeightInPoints </span>= <span style="color: #800080;">20</span><span style="color: #000000;">;
IFont font </span>=<span style="color: #000000;"> workbook.CreateFont();
font.FontHeightInPoints </span>= <span style="color: #800080;">13</span><span style="color: #000000;">;
font.Boldweight </span>= <span style="color: #800080;">700</span><span style="color: #000000;">;
headStyle.SetFont(font);
</span><span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> i = <span style="color: #800080;">0</span>; i < lstname[k].Count; i++<span style="color: #000000;">)
{
headerRow.CreateCell(i, CellType.STRING).SetCellValue(lstname[k][i]);
headerRow.GetCell(i).CellStyle </span>=<span style="color: #000000;"> headStyle;
</span><span style="color: #008000;">//</span><span style="color: #008000;">headerRow.Cells[i].SetCellValue(new HSSFRichTextString("\r\n")); </span><span style="color: #008000;">//</span><span style="color: #008000;">强制换行</span>
}
ICellStyle cellStyle </span>=<span style="color: #000000;"> workbook.CreateCellStyle();
cellStyle.Alignment </span>=<span style="color: #000000;"> HorizontalAlignment.CENTER;
cellStyle.VerticalAlignment </span>=<span style="color: #000000;"> VerticalAlignment.CENTER;
IFont cellfont </span>=<span style="color: #000000;"> workbook.CreateFont();
cellfont.FontHeightInPoints </span>= <span style="color: #800080;">10</span><span style="color: #000000;">;
cellStyle.SetFont(cellfont);
cellStyle.WrapText </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
</span><span style="color: #008000;">//</span><span style="color: #008000;">填充数据行 </span>
IRow dataRow = <span style="color: #0000ff;">null</span><span style="color: #000000;">;
rowsNum </span>= <span style="color: #800080;">1</span>; <span style="color: #008000;">//</span><span style="color: #008000;">行号，从第2行开始
</span><span style="color: #008000;">//</span><span style="color: #008000;">填充内容</span>
<span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> i = <span style="color: #800080;">0</span>; i < dtSources[k].Rows.Count; i++<span style="color: #000000;">)
{
dataRow </span>= sheet.CreateRow(i + <span style="color: #800080;">1</span><span style="color: #000000;">);
</span><span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> j = <span style="color: #800080;">0</span>; j < dtSources[k].Columns.Count; j++<span style="color: #000000;">)
{
dataRow.CreateCell(j).SetCellValue(dtSources[k].Rows[i][j].ToString());
dataRow.GetCell(j).CellStyle </span>=<span style="color: #000000;"> cellStyle;
}
}
}
</span><span style="color: #008000;">//</span><span style="color: #008000;">保存</span>
<span style="color: #0000ff;">string</span> strPhysicsPath = HttpContext.Current.Server.MapPath(Config.AccPath + <span style="color: #800000;">"</span><span style="color: #800000;">Temp/Export</span><span style="color: #800000;">"</span><span style="color: #000000;">);
</span><span style="color: #0000ff;">if</span> (!<span style="color: #000000;">Directory.Exists(strPhysicsPath))
{
Directory.CreateDirectory(strPhysicsPath);
}
</span><span style="color: #0000ff;">string</span> tempUrl = <span style="color: #800000;">"</span><span style="color: #800000;">/</span><span style="color: #800000;">"</span> + DateTime.Today.ToString(<span style="color: #800000;">"</span><span style="color: #800000;">MMdd-</span><span style="color: #800000;">"</span>) + Guid.NewGuid().ToString() + <span style="color: #800000;">"</span><span style="color: #800000;">.xls</span><span style="color: #800000;">"</span><span style="color: #000000;">;
strPhysicsPath </span>= strPhysicsPath.TrimEnd(<span style="color: #800000;">'</span><span style="color: #800000;">\\</span><span style="color: #800000;">'</span>) +<span style="color: #000000;"> tempUrl;
</span><span style="color: #0000ff;">using</span> (MemoryStream ms = <span style="color: #0000ff;">new</span><span style="color: #000000;"> MemoryStream())
{
ms.Flush();
ms.Position </span>= <span style="color: #800080;">0</span><span style="color: #000000;">;
workbook.Write(ms);
</span><span style="color: #0000ff;">using</span> (FileStream fs = <span style="color: #0000ff;">new</span><span style="color: #000000;"> FileStream(strPhysicsPath, FileMode.Create, FileAccess.Write))
{
</span><span style="color: #0000ff;">byte</span>[] fData =<span style="color: #000000;"> ms.ToArray();
fs.Write(fData, </span><span style="color: #800080;">0</span><span style="color: #000000;">, fData.Length);
fs.Flush();
}
LogHelper.WriteExportLog(filename);
</span><span style="color: #0000ff;">return</span> Config.AccPath.Replace(<span style="color: #800000;">"</span><span style="color: #800000;">~</span><span style="color: #800000;">"</span>, <span style="color: #800000;">""</span>) + <span style="color: #800000;">"</span><span style="color: #800000;">Temp/Export</span><span style="color: #800000;">"</span> +<span style="color: #000000;"> tempUrl;
}
}</span></pre>
View Code
图片base64形式怎么转为图片
String u = "Base64";
// Base64解码
byte[] b = new BASE64Decoder().decodeBuffer(u);
// 生成图片
String imgName = "echartsPhoto";
String filePath = ServletActionContext.getServletContext().getRealPath("/") + "echarts";
String fileName = filePath +"/"+ imgName +".png";
File file </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> File(filePath);
</span><span style="color: #0000ff;">if</span>(!<span style="color: #000000;">file.exists()){
file.mkdir();
}
OutputStream </span><span style="color: #0000ff;">out</span> = <span style="color: #0000ff;">new</span> FileOutputStream(<span style="color: #0000ff;">new</span><span style="color: #000000;"> File(fileName));
</span><span style="color: #0000ff;">out</span>.write(b);<span style="color: #800080;">18</span> <span style="color: #0000ff;">out</span>.close();</pre>
View Code
API 导出execl
public static string ExportExecl(DataTable dataSource,string filename)
{
//创建工作薄
IWorkbook workbook = new HSSFWorkbook();
ISheet sheet </span>=<span style="color: #000000;"> workbook.CreateSheet(filename);
sheet.PrintSetup.Landscape </span>= <span style="color: #0000ff;">true</span>; <span style="color: #008000;">//</span><span style="color: #008000;">是否横向排版</span>
sheet.FitToPage = <span style="color: #0000ff;">false</span>; <span style="color: #008000;">//</span><span style="color: #008000;">是否自适应页面</span>
sheet.PrintSetup.Scale = <span style="color: #800080;">50</span>; <span style="color: #008000;">//</span><span style="color: #008000;">缩放比例
</span><span style="color: #008000;">//</span><span style="color: #008000;">填充列标题以及样式 </span>
<span style="color: #0000ff;">int</span> rowsNum = <span style="color: #800080;">0</span>; <span style="color: #008000;">//</span><span style="color: #008000;">行号 </span>
IRow headerRow =<span style="color: #000000;"> sheet.CreateRow(rowsNum);
ICellStyle headStyle </span>=<span style="color: #000000;"> workbook.CreateCellStyle();
headStyle.Alignment </span>=<span style="color: #000000;"> HorizontalAlignment.CENTER;
headStyle.VerticalAlignment </span>=<span style="color: #000000;"> VerticalAlignment.CENTER;
headerRow.HeightInPoints </span>= <span style="color: #800080;">20</span><span style="color: #000000;">;
IFont font </span>=<span style="color: #000000;"> workbook.CreateFont();
font.FontHeightInPoints </span>= <span style="color: #800080;">13</span><span style="color: #000000;">;
font.Boldweight </span>= <span style="color: #800080;">700</span><span style="color: #000000;">;
headStyle.SetFont(font);
</span><span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> i = <span style="color: #800080;">0</span>; i < dataSource.Columns.Count; i++<span style="color: #000000;">)
{
headerRow.CreateCell(i).SetCellValue(dataSource.Columns[i].ColumnName);
headerRow.Cells[i].CellStyle </span>=<span style="color: #000000;"> headStyle;
</span><span style="color: #008000;">//</span><span style="color: #008000;">sheet.SetColumnWidth(i, 5000);</span>
sheet.AutoSizeColumn(i);
}
</span><span style="color: #008000;">//</span><span style="color: #008000;">ICellStyle cellStyle = workbook.CreateCellStyle();
</span><span style="color: #008000;">//</span><span style="color: #008000;">cellStyle.Alignment = HorizontalAlignment.CENTER;
</span><span style="color: #008000;">//</span><span style="color: #008000;">cellStyle.VerticalAlignment = VerticalAlignment.CENTER;
</span><span style="color: #008000;">//</span><span style="color: #008000;">IFont cellfont = workbook.CreateFont();
</span><span style="color: #008000;">//</span><span style="color: #008000;">cellfont.FontHeightInPoints = 10;
</span><span style="color: #008000;">//</span><span style="color: #008000;">cellStyle.SetFont(cellfont);
</span><span style="color: #008000;">//</span><span style="color: #008000;">cellStyle.WrapText = true;</span>
<span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> i = <span style="color: #800080;">1</span>; i < dataSource.Rows.Count; i++<span style="color: #000000;">)
{
IRow datarow </span>=<span style="color: #000000;"> sheet.CreateRow(i);
</span><span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> j = <span style="color: #800080;">0</span>; j < dataSource.Columns.Count; j++<span style="color: #000000;">)
{
datarow.CreateCell(j).SetCellValue(dataSource.Rows[i][j].ToString());
</span><span style="color: #008000;">//</span><span style="color: #008000;">datarow.Cells[j].CellStyle = cellStyle;</span>
}
}
using (MemoryStream ms = new MemoryStream())
{
workbook.Write(ms);
ms.Flush();
ms.Position = 0;
</span><span style="color: #008000;">//</span><span style="color: #008000;">保存</span>
<span style="color: #0000ff;">string</span> strPhysicsPath = HttpContext.Current.Server.MapPath(Config.AccPath + <span style="color: #800000;">"</span><span style="color: #800000;">Temp/Export</span><span style="color: #800000;">"</span><span style="color: #000000;">);
</span><span style="color: #0000ff;">if</span> (!<span style="color: #000000;">Directory.Exists(strPhysicsPath))
{
Directory.CreateDirectory(strPhysicsPath);
}
</span><span style="color: #0000ff;">string</span> tempUrl = <span style="color: #800000;">"</span><span style="color: #800000;">/</span><span style="color: #800000;">"</span> + DateTime.Today.ToString(<span style="color: #800000;">"</span><span style="color: #800000;">MMdd-</span><span style="color: #800000;">"</span>) + Guid.NewGuid().ToString() + <span style="color: #800000;">"</span><span style="color: #800000;">.xls</span><span style="color: #800000;">"</span><span style="color: #000000;">;
strPhysicsPath </span>= strPhysicsPath.TrimEnd(<span style="color: #800000;">'</span><span style="color: #800000;">\\</span><span style="color: #800000;">'</span>) +<span style="color: #000000;"> tempUrl;
</span><span style="color: #0000ff;">using</span> (FileStream fs = <span style="color: #0000ff;">new</span><span style="color: #000000;"> FileStream(strPhysicsPath, FileMode.Create, FileAccess.Write))
{
</span><span style="color: #0000ff;">byte</span>[] fData =<span style="color: #000000;"> ms.ToArray();
fs.Write(fData, </span><span style="color: #800080;">0</span><span style="color: #000000;">, fData.Length);
fs.Flush();
}
LogHelper.WriteExportLog(filename);
</span><span style="color: #0000ff;">return</span> Config.AccPath.Replace(<span style="color: #800000;">"</span><span style="color: #800000;">~</span><span style="color: #800000;">"</span>, <span style="color: #800000;">""</span>) + <span style="color: #800000;">"</span><span style="color: #800000;">Temp/Export</span><span style="color: #800000;">"</span> +<span style="color: #000000;"> tempUrl;
</span><span style="color: #008000;">//</span><span style="color: #008000;">return ms; </span>
}
</span><span style="color: #0000ff;">#region</span> 浏览器下载
<span style="color: #008000;">//</span><span style="color: #008000;">供浏览器下载Excel
</span><span style="color: #008000;">//</span><span style="color: #008000;">if (HttpContext.Current.Request.Browser.Browser == "IE")
</span><span style="color: #008000;">//</span><span style="color: #008000;"> FileName = HttpUtility.UrlEncode(FileName);
</span><span style="color: #008000;">//</span><span style="color: #008000;">using (MemoryStream ms = new MemoryStream())
</span><span style="color: #008000;">//</span><span style="color: #008000;">{
</span><span style="color: #008000;">//</span><span style="color: #008000;"> ms.Position = 0;
</span><span style="color: #008000;">//</span><span style="color: #008000;"> workbook.Write(ms);
</span><span style="color: #008000;">//</span><span style="color: #008000;"> ms.Flush();
</span><span style="color: #008000;">//</span><span style="color: #008000;"> HttpContext curContext = HttpContext.Current;
</span><span style="color: #008000;">//</span> <span style="color: #008000;">//</span><span style="color: #008000;"> 设置编码和附件格式
</span><span style="color: #008000;">//</span><span style="color: #008000;"> curContext.Response.ContentType = "application/vnd.ms-excel";
</span><span style="color: #008000;">//</span><span style="color: #008000;"> curContext.Response.ContentEncoding = Encoding.UTF8;
</span><span style="color: #008000;">//</span><span style="color: #008000;"> curContext.Response.Charset = "";
</span><span style="color: #008000;">//</span><span style="color: #008000;"> curContext.Response.AppendHeader("Content-Disposition",
</span><span style="color: #008000;">//</span><span style="color: #008000;"> "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8));
</span><span style="color: #008000;">//</span><span style="color: #008000;"> curContext.Response.BinaryWrite(ms.GetBuffer());
</span><span style="color: #008000;">//</span><span style="color: #008000;"> ms.Close();
</span><span style="color: #008000;">//</span><span style="color: #008000;"> ms.Dispose();
</span><span style="color: #008000;">//</span><span style="color: #008000;"> curContext.Response.End();
</span><span style="color: #008000;">//</span><span style="color: #008000;">}</span>
<span style="color: #0000ff;">#endregion</span><span style="color: #000000;">
}</span></pre>
View Code
EXECL第一行加标题 ，合并单元格
/// <summary>
/// 导出EXECL
/// </summary>
/// <param name="data">数据源</param>
/// <param name="colsname">列名</param>
/// <param name="filename">文件名</param>
/// <param name="filePath">文件路径</param>
/// <param name="isTitle">是否包含标题</param>
/// <returns>返回文件路径</returns>
public static string ExportExcel(DataTable data, List<string> colsname, string filename,string filePath = null ,bool isTitle = false)
{
//创建工作薄
IWorkbook workbook = new HSSFWorkbook(); //else if (fileExt == ".xls") { workbook = new HSSFWorkbook(); }
ISheet sheet = workbook.CreateSheet(filename);
string FileName = filename + ".xls";
</span><span style="color: #008000;">//</span><span style="color: #008000;">填充列标题以及样式 </span>
<span style="color: #0000ff;">int</span> headRowsNum = <span style="color: #800080;">0</span>; <span style="color: #008000;">//</span><span style="color: #008000;">行号
</span><span style="color: #008000;">//</span><span style="color: #008000;">是否有标题</span>
<span style="color: #0000ff;">if</span><span style="color: #000000;"> (isTitle)
{
IRow headerTitleRow </span>=<span style="color: #000000;"> sheet.CreateRow(headRowsNum);
ICellStyle headTitleStyle </span>=<span style="color: #000000;"> workbook.CreateCellStyle();
headTitleStyle.Alignment </span>=<span style="color: #000000;"> HorizontalAlignment.Center;
headTitleStyle.VerticalAlignment </span>=<span style="color: #000000;"> VerticalAlignment.Center;
headerTitleRow.HeightInPoints </span>= <span style="color: #800080;">20</span><span style="color: #000000;">;
IFont titlefont </span>=<span style="color: #000000;"> workbook.CreateFont();
titlefont.FontHeightInPoints </span>= <span style="color: #800080;">13</span><span style="color: #000000;">;
titlefont.Boldweight </span>= <span style="color: #0000ff;">short</span><span style="color: #000000;">.MaxValue;
headTitleStyle.SetFont(titlefont);
headerTitleRow.CreateCell(</span><span style="color: #800080;">0</span><span style="color: #000000;">, CellType.String).SetCellValue(filename);
headerTitleRow.GetCell(</span><span style="color: #800080;">0</span>).CellStyle =<span style="color: #000000;"> headTitleStyle;
</span><span style="color: #008000;">//</span><span style="color: #008000;">合并 CellRangeAddress四个参数为：起始行，结束行，起始列，结束列，合并后的内容与样式以该区域最左上角的单元格为准</span>
CellRangeAddress region = <span style="color: #0000ff;">new</span> CellRangeAddress(<span style="color: #800080;">0</span>, <span style="color: #800080;">0</span>, <span style="color: #800080;">0</span><span style="color: #000000;">, colsname.Count());
sheet.AddMergedRegion(region);
headRowsNum</span>++<span style="color: #000000;">;
}
IRow headerRow </span>=<span style="color: #000000;"> sheet.CreateRow(headRowsNum);
ICellStyle headStyle </span>=<span style="color: #000000;"> workbook.CreateCellStyle();
headStyle.Alignment </span>=<span style="color: #000000;"> HorizontalAlignment.Center;
headStyle.VerticalAlignment </span>=<span style="color: #000000;"> VerticalAlignment.Center;
headerRow.HeightInPoints </span>= <span style="color: #800080;">20</span><span style="color: #000000;">;
IFont font </span>=<span style="color: #000000;"> workbook.CreateFont();
font.FontHeightInPoints </span>= <span style="color: #800080;">13</span><span style="color: #000000;">;
font.Boldweight </span>= <span style="color: #800080;">700</span><span style="color: #000000;">;
headStyle.SetFont(font);
</span><span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> i = <span style="color: #800080;">0</span>; i < colsname.Count; i++<span style="color: #000000;">)
{
headerRow.CreateCell(i, CellType.String).SetCellValue(colsname[i]);
headerRow.GetCell(i).CellStyle </span>=<span style="color: #000000;"> headStyle;
</span><span style="color: #008000;">//</span><span style="color: #008000;">sheet.SetColumnWidth(i, 5000); </span><span style="color: #008000;">//</span><span style="color: #008000;">列宽</span>
sheet.AutoSizeColumn(i);
}
ICellStyle cellStyle </span>=<span style="color: #000000;"> workbook.CreateCellStyle();
cellStyle.Alignment </span>=<span style="color: #000000;"> HorizontalAlignment.Center;
cellStyle.VerticalAlignment </span>=<span style="color: #000000;"> VerticalAlignment.Center;
IFont cellfont </span>=<span style="color: #000000;"> workbook.CreateFont();
cellfont.FontHeightInPoints </span>= <span style="color: #800080;">10</span><span style="color: #000000;">;
cellStyle.SetFont(cellfont);
</span><span style="color: #008000;">//</span><span style="color: #008000;">cellStyle.WrapText = true;
</span><span style="color: #008000;">//</span><span style="color: #008000;">填充数据行 </span>
IRow row = <span style="color: #0000ff;">null</span><span style="color: #000000;">;
</span><span style="color: #0000ff;">int</span> rowsNum = headRowsNum + <span style="color: #800080;">1</span>; <span style="color: #008000;">//</span><span style="color: #008000;">行号，从第2行开始 </span>
<span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> i = <span style="color: #800080;">0</span>; i < data.Rows.Count; i++<span style="color: #000000;">)
{
</span><span style="color: #008000;">//</span><span style="color: #008000;">写入字段值 </span>
row =<span style="color: #000000;"> sheet.CreateRow(rowsNum);
row.HeightInPoints </span>= <span style="color: #800080;">18</span><span style="color: #000000;">;
</span><span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> j = <span style="color: #800080;">0</span>; j < colsname.Count; j++<span style="color: #000000;">)
{
row.CreateCell(j, CellType.String).SetCellValue(data.Rows[i][j].ToString());
row.GetCell(j).CellStyle </span>=<span style="color: #000000;"> cellStyle;
</span><span style="color: #008000;">//</span><span style="color: #008000;">sheet.AutoSizeColumn(j);</span>
}
rowsNum</span>++<span style="color: #000000;">;
}
</span><span style="color: #008000;">//</span><span style="color: #008000;">for (int i = 0; i < colsname.Count; i++)
</span><span style="color: #008000;">//</span><span style="color: #008000;">{
</span><span style="color: #008000;">//</span><span style="color: #008000;"> int columnWidth = sheet.GetColumnWidth(i) / 256;
</span><span style="color: #008000;">//</span><span style="color: #008000;"> for (int j = 0; j < data.Rows.Count; j++)
</span><span style="color: #008000;">//</span><span style="color: #008000;"> {
</span><span style="color: #008000;">//</span><span style="color: #008000;"> ICell currentCell = sheet.GetRow(j).GetCell(i);
</span><span style="color: #008000;">//</span><span style="color: #008000;"> int length = Encoding.Default.GetBytes(currentCell.ToString()).Length;
</span><span style="color: #008000;">//</span><span style="color: #008000;"> if (columnWidth < length)
</span><span style="color: #008000;">//</span><span style="color: #008000;"> {
</span><span style="color: #008000;">//</span><span style="color: #008000;"> columnWidth = length;
</span><span style="color: #008000;">//</span><span style="color: #008000;"> }
</span><span style="color: #008000;">//</span><span style="color: #008000;"> }
</span><span style="color: #008000;">//</span><span style="color: #008000;"> sheet.SetColumnWidth(i, (columnWidth + 1) * 256);
</span><span style="color: #008000;">//</span><span style="color: #008000;">}</span>
<span style="color: #0000ff;">string</span> strPhysicsPath = <span style="color: #0000ff;">string</span><span style="color: #000000;">.Empty;
</span><span style="color: #0000ff;">if</span> (!<span style="color: #0000ff;">string</span><span style="color: #000000;">.IsNullOrWhiteSpace(filePath))
{
strPhysicsPath </span>=<span style="color: #000000;"> filePath;
}
</span><span style="color: #0000ff;">else</span><span style="color: #000000;">
{
strPhysicsPath </span>= HttpContext.Current.Server.MapPath(<span style="color: #800000;">"</span><span style="color: #800000;">~/</span><span style="color: #800000;">"</span> + <span style="color: #800000;">"</span><span style="color: #800000;">Temp/Export</span><span style="color: #800000;">"</span><span style="color: #000000;">);
}
</span><span style="color: #0000ff;">if</span> (!<span style="color: #000000;">Directory.Exists(strPhysicsPath))
{
Directory.CreateDirectory(strPhysicsPath);
}
</span><span style="color: #0000ff;">string</span> tempUrl = <span style="color: #800000;">"</span><span style="color: #800000;">/</span><span style="color: #800000;">"</span> + DateTime.Today.ToString(<span style="color: #800000;">"</span><span style="color: #800000;">MMdd-</span><span style="color: #800000;">"</span>) + filename + <span style="color: #800000;">"</span><span style="color: #800000;">.xls</span><span style="color: #800000;">"</span><span style="color: #000000;">;
strPhysicsPath </span>= strPhysicsPath.TrimEnd(<span style="color: #800000;">'</span><span style="color: #800000;">\\</span><span style="color: #800000;">'</span>) +<span style="color: #000000;"> tempUrl;
</span><span style="color: #0000ff;">using</span> (MemoryStream ms = <span style="color: #0000ff;">new</span><span style="color: #000000;"> MemoryStream())
{
ms.Flush();
ms.Position </span>= <span style="color: #800080;">0</span><span style="color: #000000;">;
workbook.Write(ms);
</span><span style="color: #0000ff;">using</span> (FileStream fs = <span style="color: #0000ff;">new</span><span style="color: #000000;"> FileStream(strPhysicsPath, FileMode.Create, FileAccess.Write))
{
</span><span style="color: #0000ff;">byte</span>[] fData =<span style="color: #000000;"> ms.ToArray();
fs.Write(fData, </span><span style="color: #800080;">0</span><span style="color: #000000;">, fData.Length);
fs.Flush();
}
</span><span style="color: #008000;">//</span><span style="color: #008000;">LogHelper.WriteExportLog(filename);
</span><span style="color: #008000;">//</span><span style="color: #008000;">return Config.AccPath.Replace("~", "") + "Temp/Export" + tempUrl;</span>
LogHelper.Info(filename);
return strPhysicsPath;
}
}
View Code
//从第二行开始循环，和上一行进行判断，如果相同，则合并
for (int i = 1; i < dt.Rows.Count; i++)
{
row = sheet.CreateRow(i + 1);
for (int j = 0; j < dt.Columns.Count; j++)
{
string cellText = dt.Rows[i][j].ToString();
row.CreateCell(j).SetCellValue(cellText);
string temp = dt.Rows[i - 1][j].ToString();
//temp上一行数据，一定要判断是否为空！！！j< dt.Columns.Count-7，不需要合并的列，也可以改成 && (j!=5 || j!=7)
if (!string.IsNullOrEmpty(temp) && cellText== temp && j< dt.Columns.Count-7)
{
//本行和上一行合并,为什么是 i和i+1，这里是从第几行开始合并，到第几行结束，i是在dt里的行数，而在表里，因为有表头，所以必须要加1
CellRangeAddress region = new CellRangeAddress(i, i+1, j, j);
sheet.AddMergedRegion(region);
}
}
}
style.Alignment = HorizontalAlignment.Center;
style.VerticalAlignment = VerticalAlignment.Center;
MemoryStream ms = new MemoryStream();
book.Write(ms);
System.Web.HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}.xls", HttpUtility.UrlEncode(title + "_" + DateTime.Now.ToString("yyyy-MM-dd"), System.Text.Encoding.UTF8)));
System.Web.HttpContext.Current.Response.BinaryWrite(ms.ToArray());
System.Web.HttpContext.Current.Response.End();
book = null;
ms.Close();
ms.Dispose();
View Code
合并单元格 设置样式 输入公式
NPOI的下载地址：http://npoi.codeplex.com/
NPOI的使用教程（中文）：http://tonyqus.sinaapp.com/
首先建立一个空白的工作簿用作测试，并在其中建立空白工作表，在表中建立空白行，在行中建立单元格，并填入内容：
//建立空白工作簿
IWorkbook workbook = new HSSFWorkbook();
//在工作簿中：建立空白工作表
ISheet sheet = workbook.CreateSheet();
//在工作表中：建立行，参数为行号，从0计
IRow row = sheet.CreateRow(0);
//在行中：建立单元格，参数为列号，从0计
ICell cell = row.CreateCell(0);
//设置单元格内容
cell.SetCellValue("实习鉴定表");
设置单元格样式：设置单元格样式时需要注意，务必创建一个新的样式对象进行设置，否则会将工作表所有单元格的样式一同设置，它们应该共享的是一个样式对象：
ICellStyle style
= workbook.CreateCellStyle();
//设置单元格的样式：水平对齐居中
style.Alignment = HorizontalAlignment.CENTER;
//新建一个字体样式对象
IFont font = workbook.CreateFont();
//设置字体加粗样式
font.Boldweight = short.MaxValue;
//使用SetFont方法将字体样式添加到单元格样式中
style.SetFont(font);
//将新的样式赋给单元格
cell.CellStyle = style;标签：execl,sheet,string,int,NOPI,ms,workbook,new 来源： https://www.cnblogs.com/hong01072/p/12944396.html