将多个gridviews导出到多个excel选项卡（工作表）

Question

我在我的网站中有6个gridviews，我需要导出到excel，但每个都在一张不同的工作表中。

此链接Export GridView to multiple Excel sheet使用的东西非常相似，但他使用的是数据集，而我不是。我是C＃的新手，所以我无法改变它以适应我的解决方案。

我的代码将所有的gridviews导出到同一张表。我创建了一个循环来运行我的GridView，现在我需要将代码生成到每个Excel表单中。

protected void btExcel_Click(object sender, EventArgs e) 
{ 
    Response.Clear(); 
    Response.Buffer = true; 
    Response.AddHeader("content-disposition", "attachment;filename=FARPOP_Mensal_" + txDt.Text + ".xls"); 
    Response.ContentEncoding = System.Text.Encoding.GetEncoding("Windows-1252"); 
    Response.Charset = "ISO-8859-1"; 
    Response.ContentType = "application/vnd.ms-excel"; 

    using (StringWriter sw = new StringWriter()) 
    { 
     HtmlTextWriter hw = new HtmlTextWriter(sw); 
     GridView[] gvExcel = new GridView[] { gvAnual, gvPorUF, gvPorFarmacia, gvPorMunicipio, gvPorPV, gvPorCNPJ }; 
     for (int i = 0; i < gvExcel.Length; i++) 
     { 
      GridView gv = gvExcel[i]; 

      // 
      // Need to redirect to each sheet here? 
      // 

      gvExcel[i].HeaderRow.BackColor = Color.White; 
      gvExcel[i].UseAccessibleHeader = false; 
      gvExcel[i].AllowPaging = false; 
      for (int x = 0; x < gvExcel[i].Columns.Count; x++) 
      { 
       gvExcel[i].Columns[x].Visible = true; 
      } 

      gvExcel[i].DataBind(); 
      foreach (TableCell cell in gvExcel[i].HeaderRow.Cells) 
      { 
       cell.BackColor = Color.CadetBlue; 
       cell.Enabled = false; 
      } 

      foreach (GridViewRow row in gvExcel[i].Rows) 
      { 
       row.BackColor = Color.White; 
       foreach (TableCell cell in row.Cells) 
       { 

        cell.Controls.Clear(); 
        if (row.RowIndex % 2 == 0) 
        { 
         cell.BackColor = Color.White; 
        } 
        else 
        { 
         cell.BackColor = Color.LightBlue; 
        } 
        cell.CssClass = "textmode"; 
       } 
      } 

      gvExcel[i].RenderControl(hw); 
     } 

     //style to format numbers to string 
     string style = @"<style> .textmode { } </style>"; 
     Response.Write(style); 
     Response.Output.Write(sw.ToString()); 
     Response.Flush(); 
     Response.End(); 
    } 
} 

Answer 1

我跟着maniak1982的意见，找到了很好的解决办法。因此，如果你需要多个gridviews来多工作表，使用.NET，你将需要下载ClosedXML和DocumentFormat.OpenXml.dll。

引用的DLL后，使用下面的代码：

protected void btExcel_Click(object sender, EventArgs e) 
{ 
    XLWorkbook wb = new XLWorkbook(); 
    GridView[] gvExcel = new GridView[] { GridView1, GridView2, GridView3, GridView4, GridView5, GridView6}; 
    string[] name = new string[] { "Name1", "Name2", "Name3", "Name4", "Name5", "Name6" }; 
    for (int i = 0; i < gvExcel.Length; i++) 
    { 
     if (gvExcel[i].Visible) 
     { 
      gvExcel[i].AllowPaging = false; 
      gvExcel[i].DataBind(); 
      DataTable dt = new DataTable(name[i].ToString()); 
      for (int z = 0; z < gvExcel[i].Columns.Count; z++) 
      { 
       dt.Columns.Add(gvExcel[i].Columns[z].HeaderText); 
      } 

      foreach (GridViewRow row in gvExcel[i].Rows) 
      { 
       dt.Rows.Add(); 
       for (int c = 0; c < row.Cells.Count; c++) 
       { 
        dt.Rows[dt.Rows.Count - 1][c] = row.Cells[c].Text; 
       } 
      } 

      wb.Worksheets.Add(dt); 
      gvExcel[i].AllowPaging = true; 

     } 

    } 
    Response.Clear(); 
    Response.Buffer = true; 
    Response.Charset = ""; 
    Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"; 
    Response.AddHeader("content-disposition", "attachment;filename=Workbook_Name.xlsx"); 
    using (MemoryStream MyMemoryStream = new MemoryStream()) 
    { 
     wb.SaveAs(MyMemoryStream); 
     MyMemoryStream.WriteTo(Response.OutputStream); 
     Response.Flush(); 
     Response.End(); 
    } 
} 

我用了几天的搜索...但它可以正常使用。 很开心