数据导出到Excel/Word 防止出现乱码仅有一行数据导出的时候

 

   
1、页面中添加绿色字体代码
<%@ Page Language="C#" CodeFile="111.aspx.cs" Inherits="111" EnableEventValidation="false" %>
2、类文件中的方法
 /// <summary>
  /// 导出excel按钮
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  protected void lbToExcel_Click(object sender, EventArgs e)
  {
//注:gvData为Gridview控件的名称
    gvData.AllowPaging = false;
    gvData.DataBind();
//导出文件的文件名
    var fileName = string.Format("{0:yyyyMMddHHmmss}", DateTime.Now);
//导出的具体实现逻辑
    ExportControl(gvData, "Excel", fileName);
    gvData.AllowPaging = true;
    gvData.Columns[0].Visible = true;
  }
 
    /// <summary>
    /// 将Web控件或页面信息导出(带文件名参数)
    /// </summary>
    /// <param name="source">控件实例</param>        
    /// <param name="DocumentType">导出类型:Excel或Word</param>
    /// <param name="filename">保存文件名</param>
    public void ExportControl(System.Web.UI.Control source, string DocumentType, string filename)
    {
        //设置Http的头信息,编码格式
        if (DocumentType == "Excel")
        {
            //防止出现乱码,加上这行可以防止在只有一行数据时出现乱码数据导出到Excel/Word 防止出现乱码仅有一行数据导出的时候
            HttpContext.Current.Response.Write("<meta http-equiv=Content-Type content=text/html;charset=UTF-8>");
            //Excel            
            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(filename + ".xls", System.Text.Encoding.UTF8));
            HttpContext.Current.Response.ContentType = "application/ms-excel";
        }
        else if (DocumentType == "Word")
        {
            //防止出现乱码,加上这行可以防止在只有一行数据时出现乱码数据导出到Excel/Word 防止出现乱码仅有一行数据导出的时候
            HttpContext.Current.Response.Write("<meta http-equiv=Content-Type content=text/html;charset=UTF-8>");
            //Word
            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(filename + ".doc", System.Text.Encoding.UTF8));
            HttpContext.Current.Response.ContentType = "application/ms-word";
        }
 
        HttpContext.Current.Response.Charset = "UTF-8";
        HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
 
        //关闭控件的视图状态
        source.Page.EnableViewState = false;
 
        //初始化HtmlWriter
        System.IO.StringWriter writer = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter htmlWriter = new System.Web.UI.HtmlTextWriter(writer);
        source.RenderControl(htmlWriter);
 
        //输出
        HttpContext.Current.Response.Write(writer.ToString());
        HttpContext.Current.Response.End();
    }
 
    //重写一个方法,必须加上次方法
    public override void VerifyRenderingInServerForm(Control control)
    {
        //base.VerifyRenderingInServerForm(control);
    }
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