重复行标题和行换行的RDLC
作者:互联网
我正在Visual Studio的报表生成器中构建RDLC子报表.它需要水平显示数据,重复行标题,并在空间用完时包装(每行10个项目).可以有n个项目(编号).另请注意,必须在项目之间显示“长度”.另请注意,每行重复行标题.这是一个示例:
因此,对于一个子报表,它可能是30个“项目”(如上图所示),而另一个可以有52、20、14等.
数据像这样存储在SQL Server上:
>计数:例如30
>重量:120000,19000,20000,20000,19000,…-CSV
>长度:196,54,54,174,60,…-英寸的CSV
(我没有设计表;应该一对多处理,而不是将数据作为CSV存储在列中.)
我发现了以下示例:Show data Horizontally in rdlc report,但未显示行标题,重复行标题或包装项目.
您如何创建一个RDLC来显示上述示例中的数据?谢谢.
解决方法:
以下是众多解决方案之一;这只是一种方法.但是它最终修复了该报告.包装物品变得行不通了.据我所知,这是不可能的.因此,我决定子报表中每行最多只能包含10个项目.
我从处理数据开始,如上所述,这些数据是从数据库以CSV值输入的.不理想,但可行.
// Split the CSV data into lists.
var weightList = dataModel.Weight.Split(',')
// Add thousands separator to weight
.Select(x => int.Parse(x).ToString("##,###"))
.ToList();
var lengthList = dataModel.Length.Split(',').ToList();
reportData.RowModelList = new List<RowModel>();
// Loop for 10 at a time
for (var i = 0; i < weightList.Count; i=i+10)
{
var weightListTen = new List<string>();
// Get an array of 10 weight items
var weightArrayItems = weightList.Skip(i).Take(10).ToArray();
// Important: we need to add 10 elements per row,
// even if the item is blank string. This makes life
// easier in RDLC as we won't have to tangle with
// out-of-bound array errors. The below issue can
// be encountered on the last row.
for (var k = 0; k < 10; k++)
{
weightListTen.Add(weightArrayItems.Length - 1 < k ? "" : weightArrayItems[k]);
}
var lengthListTen = new List<string>();
// Get an array of 9 length items
var lengthArrayItems = lengthList.Skip(i).Take(9).ToArray();
// Same as weight: loop and add fully 10 items
// per row (i variable), so to avoid array out-of-bound
// errors in VBA.
for (var l = 0; l < 10; l++)
{
lengthListTen.Add(lengthArrayItems.Length - 1 < l ? "" : FeetAndInches(int.Parse(lengthArrayItems[l])));
}
// Similar issue as above being addressed here, but
// with a slightly different approach. We need the
// Id property array for this row and we want to
// ensure we have 10 records, even if the item
// only has a blank string.
var idList = new List<string>();
var diff = (i + 10) - weightList.Count;
for (var j = i+1; j <= weightList.Count + diff ; j++)
{
idList.Add(j <= weightList.Count ? j.ToString() : "");
}
// Instantiate a new row.
var rowModel = new RowModel
{
Weight = weightListTen.ToArray(),
Length = lengthListTen.ToArray(),
Id = idList.Select(x => x.ToString()).ToArray()
};
reportData.RowModelList.Add(rowModel);
}
// Helper for getting feet/inches
private static string FeetAndInches(int inches)
{
return inches / 12 + "' " + inches%12 + "\"";
}
这是处理RDLC渲染的Renderer类:
public class Renderer
{
private readonly int _id;
private ReportDataSource _dataSourceMain;
private ReportDataSource _dataSourceRows;
public Renderer(int id)
{
_id = id;
}
public async Task<byte[]> RenderPdfAsync()
{
var report = await DataService.GetReportDataAsync(_id);
Warning[] warnings;
string[] streamIds;
var mimeType = string.Empty;
var encoding = string.Empty;
var extension = string.Empty;
using (var report = new LocalReport())
{
report.ShowDetailedSubreportMessages = true;
report.EnableExternalImages = true;
report.ReportEmbeddedResource = "Renderer.Templates.Pdf.rdlc";
var dsMain = new List<DataModel> { report };
_dataSourceMain = new ReportDataSource("dsMain", dsMain);
_dataSourceRows = new ReportDataSource("dsRows", permit.RowModelList);
report.DataSources.Add(_dataSourceMain);
report.DataSources.Add(_dataSourceRows);
report.SubreportProcessing += SetSubDataSource;
report.Refresh();
var result = report.Render("PDF", null, out mimeType, out encoding, out extension, out streamIds, out warnings);
if (warnings.Any())
{
Logger.Log(LogLevel.Error, null, "Report Processing Messages: " + string.Join(", *", warnings.Select(x => new
{x.Message, x.Code, x.ObjectName, x.ObjectType, x.Severity})));
}
return result;
}
}
private void SetSubDataSource(object sender, SubreportProcessingEventArgs e)
{
e.DataSources.Clear();
e.DataSources.Add(_dataSourceMain);
e.DataSources.Add(_dataSourceRows);
}
}
子报表RDLC使用绑定到dsRows的Tablix,然后在ID,Weight和Length行中引用数组元素. Tablix的标题行已删除,左侧有一列,其中3个行标题的静态值输入到文本框控件中.
然后,该标题信息列的右侧有10列;这些显示该行的数组元素.在每个单元格中,一个表达式将获取各自的数组值:第一个“权重”列中的= Fields!Weight.Value(0),最后一个为“ Fields!Weight.Value(9)”.
有很多更好的方法可以更早地在for循环中组装数据(例如,将多个循环合并为一个);但是它正在工作,我们会在时间允许的情况下对其进行重构和提高效率.
希望这对其他人有帮助.
标签:reporting-services,rdlc,c,net 来源: https://codeday.me/bug/20191211/2106294.html