Json与DataSet转化
作者:互联网
C# DataSet与DataTable的区别和用法
DataSet是数据集,DataTable是数据表,DataSet存储多个DataTable。DataSet和DataTable像是专门存储数据的一个容器,在你查询数据库得到一些结果时可以存在里面。
public static string CreateJsonParameters(DataTable dt)
{
/* /****************************************************************************
* Without goingin to the depth of the functioning of this Method, i will try to give an overview
* As soon as this method gets a DataTable it starts to convert it into JSON String,
* it takes each row and in each row it grabs the cell name and its data.
* This kind of JSON is very usefull when developer have to have Column name of the .
* Values Can be Access on clien in this way. OBJ.HEAD[0].<ColumnName>
* NOTE: One negative point. by this method user will not be able to call any cell by its index.
* *************************************************************************/
StringBuilder JsonString = new StringBuilder();
//Exception Handling
if (dt != null && dt.Rows.Count > 0)
{
JsonString.Append("{ ");
JsonString.Append("\"Head\":[ ");
for (int i = 0; i < dt.Rows.Count; i++)
{
JsonString.Append("{ ");
for (int j = 0; j < dt.Columns.Count; j++)
{
if (j < dt.Columns.Count - 1)
{
JsonString.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + "\"" + dt.Rows[i][j].ToString() + "\",");
}
else if (j == dt.Columns.Count - 1)
{
JsonString.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + "\"" + dt.Rows[i][j].ToString() + "\"");
}
}
/*end Of String*/
if (i == dt.Rows.Count - 1)
{
JsonString.Append("} ");
}
else
{
JsonString.Append("}, ");
}
}
JsonString.Append("]}");
return JsonString.ToString();
}
else
{
return null;
}
}
标签:Count,JsonString,DataSet,转化,Json,ToString,dt,DataTable,Append 来源: https://www.cnblogs.com/xxhao/p/12823385.html