string strFileName = Environment.CurrentDirectory+@"/template/template.tpl";

　　string strSaveFileName = Environment.CurrentDirectory+@"/excel/"+System.DateTime.Now.ToString().Replace(":","").Replace("-","").Replace(" ","")+@".xls";

　　Excel.Application ThisApplication = new Excel.ApplicationClass();

　　Excel.Workbook ThisWorkBook;

　　object missing = System.Reflection.Missing.Value;

　　try

　　{

　　//加载Excel模板文件

　　ThisWorkBook = ThisApplication.Workbooks.Open(strFileName,missing,missing,missing,missing,missing,

missing,missing,missing,missing,missing,missing,missing);

　　Excel.Worksheet ThisSheet = (Excel.Worksheet)ThisWorkBook.Sheets[1];

　　ThisSheet.Cells[7,1] = dtEnd.ToShortDateString();

　　progressBar.Value = 30;

　　ThisApplication.Visible = false;

　　DataRow dr = dt.Rows[0];

　　for( int i=0; i

　　{

　　ThisSheet.Cells[7,i+2] = dr[i].ToString();

　　progressBar.Value +=1;

　　}

　　//更新数据后另存为新文件

　　ThisSheet.SaveAs(strSaveFileName,missing,missing,missing,missing,missing,missing,missing,missing);

　　}

　　catch{}

　　finally

　　{

　　ThisApplication.Quit();

　　ThisWorkBook = null;

　　ThisApplication = null;

　　//dt = null;

　　}

　　try

　　{ //打开刚才生成的Excel文件

　　Excel.Workbook NewWorkBook;

　　NewWorkBook = NewApplication.Workbooks.Open(strSaveFileName,missing,missing,missing,missing,

missing,missing,missing,missing,missing,missing,missing,missing);

　　Excel.Worksheet NewSheet = (Excel.Worksheet)NewWorkBook.Sheets[1];

　　NewApplication.Visible = true;

　　//也可以使用System.Diagnostics.Process.Start(strSaveFileName);来打开新文件

　　}