Question

我有一个要导出到Excel的GridView。当我使用在线查找的示例代码时，它会将内容导出到Excel中，但由于某种原因，它还会清除导出表格之外的所有网格线。

对于普通的Excel用户来说，这很容易解决，但我需要这个解决方案适合所有人。

那么有没有办法将GridView中的数据导出到Excel工作簿中，看起来它只是输入到Excel中？我已粘贴下面使用的代码，假设名为toPrint的GridView存在且具有准确的数据。

Response.Clear();
Response.AddHeader("content-disposition", "attachment; filename=" + name + "_Registration_Forms.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
Page.EnableViewState = false;

System.IO.StringWriter stringWrite = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);

toPrint.RenderControl(htmlWrite);

Response.Write(stringWrite.ToString());
Response.End();

编辑：找到一个部分解决方案。如果我导出为逗号分隔列表并将标题设置为CSV文件，它将打开正常，并显示所有网格线（甚至是导出数据之外的那些）。当然，唯一的问题是在导出之前必须从我的值中删除每个逗号和换行符。

Answer 1

以下帖子给了我答案。 http://forums.asp.net/t/1074110.aspx 我将总结如何处理代码。

System.IO.StringWriter dvWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter OutputGenerator = new System.Web.UI.HtmlTextWriter(dvWriter);

            //To put in the excel gridlines 
            dvWriter.Write(@"<html xmlns:x=""urn:schemas-microsoft-com:office:excel"">");
            dvWriter.Write(@"<head>
                               <xml>
                                 <x:ExcelWorkbook> 
                                    <x:ExcelWorksheets>
                                       <x:ExcelWorksheet>
                                          <x:WorksheetOptions>
                                             <x:Panes></x:Panes>
                                             <x:Print><x:Gridlines /></x:Print>
                                          </x:WorksheetOptions>
                                        </x:ExcelWorksheet>
                                      </x:ExcelWorksheets>
                                    </x:ExcelWorkbook>
                                  </xml>
                                </head>");
//*******Put your Table Body here *******

Answer 2

我过去曾使用过以下的辅助功能。我刚刚给用户一个复选框，他们可以选择是否包含网格线。显然，您可以将其更改为始终包含网格线。

namespace Helpers
{
    public class GridViewExportUtil
    {
        public static void Export(string fileName, GridView gv, bool includeGridLines)
        {
           HttpContext.Current.Response.Clear();
           HttpContext.Current.Response.AddHeader(
               "content-disposition", string.Format("attachment; filename={0}", fileName));
           HttpContext.Current.Response.ContentType = "application/ms-excel";

           using (StringWriter sw = new StringWriter())
           {
               using (HtmlTextWriter htw = new HtmlTextWriter(sw))
               {
               //  Create a form to contain the grid
               Table table = new Table();

            if (includeGridLines)
            {
               table.GridLines = gv.GridLines;
            }

               //  add the header row to the table
               if (gv.HeaderRow != null)
               {
                   GridViewExportUtil.PrepareControlForExport(gv.HeaderRow);
                   table.Rows.Add(gv.HeaderRow);
               }

               //  add each of the data rows to the table
               foreach (GridViewRow row in gv.Rows)
               {
                GridViewExportUtil.PrepareControlForExport(row);
                   table.Rows.Add(row);
               }

               //  add the footer row to the table
               if (gv.FooterRow != null)
               {
                   GridViewExportUtil.PrepareControlForExport(gv.FooterRow);
                   table.Rows.Add(gv.FooterRow);
               }

                  //  render the table into the htmlwriter
                  table.RenderControl(htw);

                  //  render the htmlwriter into the response
                  HttpContext.Current.Response.Write(sw.ToString());
                  HttpContext.Current.Response.End();
              }
           }
       }

        /// <summary>
        /// Replace any of the contained controls with literals
        /// </summary>
        /// <param name="control"></param>
       private static void PrepareControlForExport(Control control)
        {
           for (int i = 0; i < control.Controls.Count; i++)
           {
               Control current = control.Controls[i];
               if (current is LinkButton)
               {
                  control.Controls.Remove(current);
                  control.Controls.AddAt(i, new LiteralControl((current as LinkButton).Text));
               }
               else if (current is ImageButton)
               {
                  control.Controls.Remove(current);
                  control.Controls.AddAt(i, new LiteralControl((current as ImageButton).AlternateText));
               }
               else if (current is HyperLink)
               {
                  control.Controls.Remove(current);
                  control.Controls.AddAt(i, new LiteralControl((current as HyperLink).Text));
               }
               else if (current is DropDownList)
               {
                  control.Controls.Remove(current);
                  control.Controls.AddAt(i, new LiteralControl((current as DropDownList).SelectedItem.Text));
               }
               else if (current is CheckBox)
               {
                  control.Controls.Remove(current);
                  control.Controls.AddAt(i, new LiteralControl((current as CheckBox).Checked ? "True" : "False"));
               }

               if (current.HasControls())
               {
                GridViewExportUtil.PrepareControlForExport(current);
               }
           }
        }
    }
}

这是你如何称呼它的一个例子：

GridViewExportUtil.Export("QueryResults.xls", GridView1, includeGridLines);

Answer 3

当我导出到Excel时，我遇到了同样的问题，没有获得网格线。

我解决它的方法是将Gridlines="Both"放在<datagrid>标记内。

Answer 4

VB

Public Overrides Sub VerifyRenderingInServerForm(control As Control)
    'base.VerifyRenderingInServerForm(control);
'This remains empty
End Sub

Protected Sub btnExcel_Click(sender As Object, e As ImageClickEventArgs) Handles btnExcel.Click

    Response.Clear()
    Response.AddHeader("content-disposition", "attachment;filename=FileName.xls")
    Response.Charset = ""
    Response.Cache.SetCacheability(HttpCacheability.NoCache)
    Response.ContentType = "application/vnd.ms-excel"

    Dim stringWrite As New System.IO.StringWriter()
    Dim htmlWrite As System.Web.UI.HtmlTextWriter = New HtmlTextWriter(stringWrite)

    htmlWrite.Write("<html xmlns:o=""urn:schemas-microsoft-com:office:office"" ")
    htmlWrite.Write("xmlns:x=""urn:schemas-microsoft-com:office:excel"" ")
    htmlWrite.Write("xmlns=""http://www.w3.org/TR/REC-html40""> ")
    htmlWrite.Write("<head> ")
    htmlWrite.Write("<!--[if gte mso 9]><xml> ")
    htmlWrite.Write("<x:ExcelWorkbook> ")
    htmlWrite.Write("<x:ExcelWorksheets> ")
    htmlWrite.Write("<x:ExcelWorksheet> ")
    htmlWrite.Write("<x:Name>Sheet1</x:Name> ")
    htmlWrite.Write("<x:WorksheetOptions> ")
    htmlWrite.Write("<x:Selected/> ")
    htmlWrite.Write("<x:ProtectContents>False</x:ProtectContents> ")
    htmlWrite.Write("<x:ProtectObjects>False</x:ProtectObjects> ")
    htmlWrite.Write("<x:ProtectScenarios>False</x:ProtectScenarios> ")
    htmlWrite.Write("</x:WorksheetOptions> ")
    htmlWrite.Write("</x:ExcelWorksheet> ")
    htmlWrite.Write("</x:ExcelWorksheets> ")
    htmlWrite.Write("</x:ExcelWorkbook> ")
    htmlWrite.Write("</xml><![endif]--> ")
    htmlWrite.Write("</head>")
    htmlWrite.WriteLine("")

    gridView.HeaderStyle.Reset()
    gridView.FooterStyle.Reset()
    gridView.AlternatingRowStyle.Reset()
    gridView.RowStyle.Reset()

    gridView.BackColor = Color.Transparent
    gridView.GridLines = GridLines.None
    gridView.RenderControl(htmlWrite)

    Response.Write(stringWrite.ToString())
    Response.[End]()
End Sub

C＃

public override void VerifyRenderingInServerForm(Control control)
{
    //base.VerifyRenderingInServerForm(control);
    //This remains empty
}


protected void btnExcel_Click(object sender, ImageClickEventArgs e)
{
    Response.Clear();
    Response.AddHeader("content-disposition", "attachment;filename=FileName.xls");
    Response.Charset = "";
    Response.Cache.SetCacheability(HttpCacheability.NoCache);
    Response.ContentType = "application/vnd.ms-excel";
    System.IO.StringWriter stringWrite = new System.IO.StringWriter();
    System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);

    htmlWrite.Write("<html xmlns:o=\"urn:schemas-microsoft-com:office:office\" ");
    htmlWrite.Write("xmlns:x=\"urn:schemas-microsoft-com:office:excel\" ");
    htmlWrite.Write("xmlns=\"http://www.w3.org/TR/REC-html40\"> ");
    htmlWrite.Write("<head> ");
    htmlWrite.Write("<!--[if gte mso 9]><xml> ");
    htmlWrite.Write("<x:ExcelWorkbook> ");
    htmlWrite.Write("<x:ExcelWorksheets> ");
    htmlWrite.Write("<x:ExcelWorksheet> ");
    htmlWrite.Write("<x:Name>Sheet1</x:Name> ");
    htmlWrite.Write("<x:WorksheetOptions> ");
    htmlWrite.Write("<x:Selected/> ");
    htmlWrite.Write("<x:ProtectContents>False</x:ProtectContents> ");
    htmlWrite.Write("<x:ProtectObjects>False</x:ProtectObjects> ");
    htmlWrite.Write("<x:ProtectScenarios>False</x:ProtectScenarios> ");
    htmlWrite.Write("</x:WorksheetOptions> ");
    htmlWrite.Write("</x:ExcelWorksheet> ");
    htmlWrite.Write("</x:ExcelWorksheets> ");
    htmlWrite.Write("</x:ExcelWorkbook> ");
    htmlWrite.Write("</xml><![endif]--> ");
    htmlWrite.Write("</head>");
    htmlWrite.WriteLine("");

    gridView.HeaderStyle.Reset();
    gridView.FooterStyle.Reset();
    gridView.AlternatingRowStyle.Reset();
    gridView.RowStyle.Reset();

    gridView.BackColor = Color.Transparent;
    gridView.GridLines = GridLines.None;
    gridView.RenderControl(htmlWrite);

    Response.Write(stringWrite.ToString());
    Response.End();

}

将GridView导出到Excel而不会丢失Excel中的网格线

4 个答案: