导出到Excel乱码的有关问题

导出到Excel乱码的问题.
环境: Windows 2003 Server英文版,Sql2005英文版, .Net 1.0(C#)

问题: 将数据库里的数据导出到Excel中时,非英文字符出现乱码. 在数据库中显示正常.

我们的系统有很多种语言,如何才能将非英文字符导出到Excel中而不出现乱码?

部分代码如下:

C# code

string filename = DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls";Response.Clear();System.Web.HttpContext.Current.Response.Buffer = true;System.Web.HttpContext.Current.Response.AddHeader( "Content-Disposition", "attachment;filename="+filename);System.Web.HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";Response.ContentEncoding = System.Text.Encoding.UTF8;//byte[] array1 = new byte[] {0xFF, 0xFE };byte[] array1 = new byte[] {0xEF, 0xBF, 0xBE}; Response.BinaryWrite(array1);System.Web.HttpContext.Current.Response.Write("<meta http-equiv=Content-Type content='text/html; charset=utf-8'>");String s;s = "<P>おはようございます?????Здравствуте</P>";//            byte[] converted = System.Text.Encoding.GetEncoding("utf-8").GetBytes(s.ToString()); //            Response.BinaryWrite(converted); Response.Write(s);Response.Flush();Response.End();

求高手帮助.谢谢.

[解决办法]

但是一试,便出现了乱码,解决方案如下
public static void Export(System.Web.UI.Page page, System.Web.UI.Control dg, string fileName, string typeName)
{
System.Web.HttpResponse httpResponse =page.Response;
httpResponse.AppendHeader
("Content-Disposition", "attachment;filename="
+ HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
httpResponse.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
httpResponse.ContentType = typeName;
System.IO.StringWriter tw = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);
dg.RenderControl(hw);
string filePath = page.Server.MapPath("..") + fileName;
System.IO.StreamWriter sw = System.IO.File.CreateText(filePath);
sw.Write(tw.ToString());
sw.Close();

DownFile(httpResponse, fileName, filePath);
httpResponse.End();
}
public static bool DownFile(System.Web.HttpResponse Response, string fileName, string fullPath)
{
try
{
Response.ContentType = "application/octet-stream";
Response.AppendHeader("Content-Disposition", "attachment;filename=" +
HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8) + ";charset=GB2312");
System.IO.FileStream fs = System.IO.File.OpenRead(fullPath);
long fLen = fs.Length;
int size = 102400;//每100K同时下载数据
byte[] readData = new byte[size];//指定缓冲区的大小
if (size > fLen) size = Convert.ToInt32(fLen);
long fPos = 0;
bool isEnd = false;
while (!isEnd)
{
if ((fPos + size) > fLen)
{
size = Convert.ToInt32(fLen - fPos);
readData = new byte[size];
isEnd = true;
}
fs.Read(readData, 0, size);//读入一个压缩块
Response.BinaryWrite(readData);
fPos += size;
}
fs.Close();
System.IO.File.Delete(fullPath);
return true;
}
catch
{
return false;
}
}
怎么调用?? 其实就是怎么调用Export这个函数罢了.

以上方法可以很有效地解决导出的乱码问题
[解决办法]

C# code

Response.Charset = "UTF-8";  Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
[解决办法]
mark
编码的问题是比较麻烦.
看你的代码,是想向客户端写个xls的文件,但是你写的内容是  "<P>おはようございます?????Здравствуте</P>"  
也许是客户端把这段文字当作xls的文件来处理了,
如果不符合xls的文件格式,当作xls来显示很可能是乱码.  
比如你用记事本打开一个exe 文件,就有这样的情况.

对xls的文件格式不了解,猜测一下,要是不对,莫怪.
[解决办法]
你参考一下下面的代码吧！我一直用的是这种.  

DataTable dt = 从数据库中得到数据
          
           System.Web.HttpContext curContext = System.Web.HttpContext.Current;
           if (dt != null)
           {
               curContext.Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");//改成utf-8
               curContext.Response.ContentType = "application/excel";
               curContext.Response.ClearContent();
               curContext.Response.AddHeader("content-disposition", "attachment; filename=filename.xls");

               //导出excel文件
               StringWriter sw = new StringWriter();
               System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);
               GridView dg = new GridView();
               dg.DataSource = dt.DefaultView;
               dg.DataBind();
               dg.RenderControl(htw);
               dg.Dispose();
               curContext.Response.Write(sw.ToString());

               curContext.Response.End();
           }
[解决办法]
C# code
 curContext.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");//起的作用                curContext.Response.ContentType = "application/excel";                 curContext.Response.Charset = "utf-8";//起的作用                curContext.Response.ClearContent(); 

 

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