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。
答案 0 :(得分：5)
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 *******
答案 1 :(得分：3)
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);
答案 2 :(得分：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。
答案 3 :(得分：0)
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();
}