面函数作用DataTable导EXCEL文件：
private void DataTabletoExcel(System.Data.DataTable tmpDataTable,string strFileName)
{
if (tmpDataTable == null)
{
return;
}
int rowNum = tmpDataTable.Rows.Count;
int columnNum = tmpDataTable.Columns.Count;
int rowIndex = 1;
int columnIndex = 0;
Excel.Application xlApp = new Excel.ApplicationClass();
xlApp.DefaultFilePath = "";
xlApp.DisplayAlerts = true;
xlApp.SheetsInNewWorkbook = 1;
Excel.Workbook xlBook = xlApp.Workbooks.Add(true);
//DataTable列名导入Excel表第行
foreach(DataColumn dc in tmpDataTable.Columns)
{
columnIndex ++;
xlApp.Cells[rowIndex,columnIndex] = dc.ColumnName;
}
//DataTable数据导入Excel
for(int i = 0;i
rowIndex ++;
columnIndex = 0;
for (int j = 0;j
columnIndex ++;
xlApp.Cells[rowIndex,columnIndex] = tmpDataTable.Rows[i][j].ToString();
}
}
xlBook.SaveCopyAs(strFileName + ".xls");
}
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