ASP.NET Excel导出编码问题

Question

我正在ASP.NET站点上进行一些Excel导出.除了编码之外,一切都有效.当我在Excel中打开它时,它看起来像这样:

Eingabe KostenjeGerätGerät:Gerätebezeichnung:BetriebsmittelHeizÃlinâ€:4 Dieselverbrauchinâ€:4

这是我的代码:

Response.Clear();
Response.ContentType = "application/ms-excel";
Response.AddHeader("Content-Disposition", "inline;filename=NachkalkGeraete.xls;");
var writer = new HtmlTextWriter(Response.Output);

SomeControl.RenderControl(writer); /* FormView, Table, DataGrid... */

Response.End();

我已经尝试过显式设置编码..但没有发生任何变化:

Response.Clear();
Response.ContentType = "application/vnd.ms-excel";
Response.AddHeader("Content-Disposition", "attachment; filename=NachkalkGeraete.xls");

Response.BufferOutput = true;
Response.ContentEncoding = System.Text.Encoding.UTF8;
Response.Charset = "UTF-8";
EnableViewState = false;

System.IO.StringWriter tw = new System.IO.StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(tw);

SomeControl.RenderControl(hw);

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

有什么问题,拜托？

Answer 1

我发现问题可能出在excel文件的标题中,它不包含BOM字节序列(在表示所用编码的文件的开头).

所以我这样做了它对我有用:

Response.Clear();
Response.AddHeader("content-disposition","attachment;filename=Test.xls");   
Response.ContentType = "application/ms-excel";
Response.ContentEncoding = System.Text.Encoding.Unicode;
Response.BinaryWrite(System.Text.Encoding.Unicode.GetPreamble());

System.IO.StringWriter sw = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter hw = new HtmlTextWriter(sw);

FormView1.RenderControl(hw);

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

Answer 2

您是否尝试在HTML中的元标记中设置编码？

<meta http-equiv="content-type" content="application/xhtml+xml; charset=UTF-8" />

Excel将不会看到响应标头,因此它不会知道它是什么Response.Encoding.元标记允许它找出.

Answer 3

对于需要UTF8的情况......

FileInfo dataExportFile = new FileInfo(dsExport.Tables[0].Rows[0]["DataExportFile"].ToString());

Response.Clear();
Response.ContentType = "application/ms-excel";                        
Response.AddHeader("Content-Disposition", "attachment;filename=" + dataExportFile.Name);
Response.ContentEncoding = System.Text.Encoding.UTF8;
Response.BinaryWrite(System.Text.Encoding.UTF8.GetPreamble());
Response.TransmitFile(dataExportFile.FullName);