//导出Excel的方法
private void ExportExcel()
{
DataSet ds=dtsSelect;//数据源
if(ds==null) return;
string saveFileName="";
bool fileSaved=false;
SaveFileDialog saveDialog=new SaveFileDialog();
saveDialog.DefaultExt ="xls";
saveDialog.Filter="Excel 文件|*.xls";
saveDialog.FileName ="Sheet1";
saveDialog.ShowDialog();
saveFileName=saveDialog.FileName;
if(saveFileName.IndexOf(":")<0) return; //被点了取消
Excel.Application xlApp=new Excel.Application();
if(xlApp==null)
{
MessageBox.Show("无法创建Excel对象,可能您的机子未安装Excel");
return;
}
Excel.Workbooks workbooks=xlApp.Workbooks;
Excel.Workbook workbook=workbooks.Add(Excel.XlWBATemplate.xlWBATWorksheet);
Excel.Worksheet worksheet=(Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
//写入字段
for(int i=0;i<ds.Tables[0].Columns.Count;i++)
{
worksheet.Cells[1,i+1]=ds.Tables[0].Columns[i].ColumnName;
}
//写入数值
for(int r=0;r<ds.Tables[0].Rows.Count;r++)
{
for(int i=0;i<ds.Tables[0].Columns.Count;i++)
{
worksheet.Cells[r+2,i+1]=ds.Tables[0].Rows[r][i];
}
System.Windows.Forms.Application.DoEvents();
}
worksheet.Columns.EntireColumn.AutoFit();//列宽自适应。
if(cmbxType.Text!="Notification")
{
Excel.Range rg=worksheet.get_Range(worksheet.Cells[2,2],worksheet.Cells[ds.Tables
[0].Rows.Count+1,2]);
rg.NumberFormat="00000000";
}
if(saveFileName!="")
{
try
{
workbook.Saved =true;
workbook.SaveCopyAs(saveFileName);
fileSaved=true;
}
catch(Exception ex)
{
fileSaved=false;
MessageBox.Show("导出文件时出错,文件可能正被打开!\n"+ex.Message);
}
}
else
{
fileSaved=false;
}
xlApp.Quit();
GC.Collect();// 强行销毁
if(fileSaved && System.IO.File.Exists(saveFileName)) System.Diagnostics.Process.Start
(saveFileName); //打开EXCE