C#使用winform简单导出Excel的方法

本文实例讲述了c#使用winform简单导出excel的方法。分享给大家供大家参考，具体如下：

using excel;

在项目中引入excel.dll

/// <summary>
/// 导出excel
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnexportexcel_click(object sender, eventargs e)
{
  datatable dt = this.dgvwaterticket.datasource;
  if (dt == null)
  {
    return;
  }
  if (dt.rows.count == 0)
  {
    return;
  }
  excel.application xlapp = new excel.application();
  if (xlapp == null)
  {
    messagebox.show("请确保您的电脑已经安装excel", "提示信息", messageboxbuttons.ok, messageboxicon.error);
    return;
  }
  xlapp.usercontrol = true;
  excel.workbooks workbooks = xlapp.workbooks;
  //根据模版产生新的workbook //workbook workbook = workbooks.add("d:\\aa.xls");
  excel.workbook workbook = workbooks.add(excel.xlwbatemplate.xlwbatworksheet);
  excel.worksheet worksheet = (excel.worksheet)workbook.worksheets[1];//取得sheet1
  if (worksheet == null)
  {
    messagebox.show("请确保您的电脑已经安装excel", "提示信息", messageboxbuttons.ok, messageboxicon.error);
    return;
  }
  try
  {
    excel.range range;
    long totalcount = dt.rows.count;
    long rowread = 0;
    float percent = 0;
    worksheet.cells[1, 1] = frm.text;//导出的标题
    worksheet.get_range(worksheet.cells[1, 1], worksheet.cells[1, dt.]).mergecells = true; //合并单元格---列数
    worksheet.get_range(worksheet.cells[1, 1], worksheet.cells[1, 3]).horizontalalignment = excel.xlvalign.xlvaligncenter;//居中对齐
    worksheet.get_range(worksheet.cells[1, 3], worksheet.cells[1, 3]).columnwidth = 15;   //列宽
    worksheet.get_range(worksheet.cells[1, 2], worksheet.cells[1, 2]).columnwidth = 15;   //列宽
    worksheet.get_range(worksheet.cells[1, 1], worksheet.cells[1, 1]).columnwidth = 20;   //列宽
    //写入字段
    for (int i = 0; i < dt.columns.count; i++)
    {
      worksheet.cells[2, i + 1] = dt.columns[i].columnname;
      range = (excel.range)worksheet.cells[2, i + 1];
      range.interior.colorindex = 15;
      range.font.bold = true;
    }
    //写入数值
    for (int r = 0; r < dt.rows.count; r++)
    {
      for (int i = 0; i < dt.columns.count; i++)
      {
        worksheet.cells[r + 3, i + 1] = dt.rows[r][i];
      }
      rowread++;
      percent = ((float)(100 * rowread)) / totalcount;
      //system.threading.thread.sleep(500);
      //如果字的数量过多则自动换行。worksheet.cells[r+1, 4]为worksheet.cells[行, 列]
      worksheet.get_range(worksheet.cells[r + 3, 4], worksheet.cells[r + 1, 4]).columns.wraptext = true;   //自动换行
      worksheet.get_range(worksheet.cells[r + 3, 4], worksheet.cells[r + 3, 4]).rows.autofit(); //自动加行高
      //this.text = "导出数据[" + percent.tostring("0.00") + "%]...";
    }
    range = worksheet.get_range(worksheet.cells[2, 1], worksheet.cells[dt.rows.count + 2, dt.columns.count]);
    range.borderaround(excel.xllinestyle.xlcontinuous, excel.xlborderweight.xlthin, excel.xlcolorindex.xlcolorindexautomatic, null);
    range.borders[excel.xlbordersindex.xlinsidehorizontal].colorindex = excel.xlcolorindex.xlcolorindexautomatic;
    range.borders[excel.xlbordersindex.xlinsidehorizontal].linestyle = excel.xllinestyle.xlcontinuous;
    range.borders[excel.xlbordersindex.xlinsidehorizontal].weight = excel.xlborderweight.xlthin;
    if (dt.columns.count > 1)
    {
      range.borders[excel.xlbordersindex.xlinsidevertical].colorindex = excel.xlcolorindex.xlcolorindexautomatic;
      range.borders[excel.xlbordersindex.xlinsidevertical].linestyle = excel.xllinestyle.xlcontinuous;
      range.borders[excel.xlbordersindex.xlinsidevertical].weight = excel.xlborderweight.xlthin;
    }
    xlapp.visible = true;
  }
  catch
  {
    messagebox.show("到出excel失败！", "提示信息", messageboxbuttons.ok, messageboxicon.error);
  }
  finally
  {
    system.runtime.interopservices.marshal.releasecomobject(worksheet);
    system.runtime.interopservices.marshal.releasecomobject(workbook);
    system.runtime.interopservices.marshal.releasecomobject(workbooks);
    system.runtime.interopservices.marshal.releasecomobject(xlapp);
    //killprocess("excel");
    gc.collect();//强行销毁
  }
}

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希望本文所述对大家c#程序设计有所帮助。