无法正确显示从GridView导出到Excel

通过SqlDataSource绑定GridView，我编写了以下代码将GridView导出到Excel：

System.IO.StringWriter sw = new System.IO.StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ContentType = "application/vnd.ms-excel";
Response.AddHeader("Content-Disposition", "attachment;filename=" + FileName);
gvReportPrint.GridLines = GridLines.Both;
gvReportPrint.Font.Name = "'BYekan'";

foreach (GridViewRow row in gvReportPrint.Rows)
{
    row.Cells[2].Attributes.Add("class", "textmode");
}

string style = @"<style> .textmode { mso-number-format:\@; } </style>";
gvReportPrint.HeaderStyle.Font.Bold = true;
Response.Write(style);
gvReportPrint.RenderControl(hw);
Response.Output.Write(sw.ToString());
Response.End();

System.IO.StringWriter sw=new System.IO.StringWriter（）；
HtmlTextWriter hw=新的HtmlTextWriter（sw）；
Response.Cache.SetCacheability（HttpCacheability.NoCache）；
Response.ContentType=“application/vnd.ms excel”；
Response.AddHeader（“内容处置”、“附件；文件名=“+filename”）；
gvReportPrint.GridLines=网格线。两者都是；
gvReportPrint.Font.Name=“'BYekan'”；
foreach（gvReportPrint.Rows中的GridViewRow行）
{
行。单元格[2]。属性。添加（“类”，“文本模式”）；
}
字符串样式=@“.textmode{mso数字格式：\@；}”；
gvReportPrint.HeaderStyle.Font.Bold=true；
回应。写作（风格）；
gvReportPrint.渲染控制（hw）；
Response.Output.Write（sw.ToString（））；
Response.End（）；

从GridView导出到Excel时，unicode字符无法正确显示， 它们如下所示：

---

-->单击此链接显示问题您似乎正在使用

asp:GridView

，我遇到了相同的问题，并使用

GridView类解决了问题，如下所示：

public void ToExcel(DataTable dt, string reportName)
    {
        if (dt.Rows.Count > 0)
        {
            string filename = string.Format("{0}.xls", reportName);

            GridView gv = new GridView();

            gv.DataSource = dt;
            gv.HeaderStyle.BackColor = System.Drawing.Color.FromArgb(0, 119, 179);
            gv.HeaderStyle.ForeColor = System.Drawing.Color.FromArgb(250, 250, 250);
            gv.AlternatingRowStyle.BackColor = System.Drawing.Color.FromArgb(191, 191, 191);
            gv.Font.Name = "Tahoma";
            gv.Font.Size = 10;
            gv.DataBind();

            System.IO.StringWriter sw = new System.IO.StringWriter();
            HtmlTextWriter hw = new HtmlTextWriter(sw);
            HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
            HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
            HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + filename);
            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Unicode;
            HttpContext.Current.Response.BinaryWrite(System.Text.Encoding.Unicode.GetPreamble());

            gv.RenderControl(hw);
            HttpContext.Current.Response.Output.Write(sw.ToString());
            HttpContext.Current.Response.End();
        }
    }

而
dt
应该是gridview的数据源

也请看一看