现提供导出Excel模版的代码如下：

namespace ExcelTest
{
public class ExelTemplate
{
private static Excel.Application ExcelApp;//Define a Excel Application object
private static Excel._Workbook ExcelWB;//define a Excel workbook object
private static Excel._Worksheet ExcelWS;//define a Excel workbook worksheet

//将报表所需的主数据放入dtHeader，明细数据放入dtDetail中，调用的模版名称为strTemplateFileName，导出的报表名称为strOutFileName

public static bool FillContent(string strTemplateFileName, string strOutFileName, System.Data.DataTable dtHeader, System.Data.DataTable dtDetail)
{

bool flag = true;
FileInfo fileInfo = new FileInfo(strTemplateFileName);

System.Globalization.CultureInfo CurrentCI = System.Threading.Thread.CurrentThread.CurrentCulture;
System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");

try
{
//Start Excel and get Application object.
ExcelApp = new Excel.Application();
ExcelApp.Visible = false;

//Get a new workbook.
ExcelWB = (Excel._Workbook)(ExcelApp.Workbooks.Add(strTemplateFileName));

//Fill content.注意这里的Header和Detail分别对应模版文件中的Header和Detail两个Sheet页，这2个Sheet是专门用来存放明主数据或者明细数据的。
if (!FillWorksheet("Header", dtHeader)) return false;
if (!FillWorksheet("Detail", dtDetail)) return false;

//Run macro.

ExcelApp.Run("SetData", Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);

ExcelApp.DisplayAlerts = false;
//=========================================================================================================
//Delete Header and Detail.
//((Excel._Worksheet)ExcelWB.Sheets["Header Information"]).Delete();
//((Excel._Worksheet)ExcelWB.Sheets["Detail Information"]).Delete();

//=========================================================================================================
ExcelApp.DisplayAlerts = true;

//Delete old file.
File.Delete(strOutFileName);
//Save excel file.
ExcelWB.SaveAs(strOutFileName, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, XlSaveAsAccessMode.xlExclusive, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);

// Quit Excel.
ExcelWB.Close(false, strOutFileName, Missing.Value);//*******************

MarshalReleaseComObject(ExcelWB);