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
 }
}

希望本文所述对大家C#程序设计有所帮助。