编程经验:不依赖office组件的Excel简单导出

 

protected void btnDataOut_Click(object sender, EventArgs e)

{

   DataToExcel dte = new DataToExcel();

   DataTable dt = null;

   if (sid > 0)

   {

   dt = Users.GetAuthUserListByGroupidList("8", sid.ToString());

  }

  else

   { dt = Users.GetAuthUserListByGroupid(8); }

   UserInfo userInfo = new UserInfo();

   if (dt.Rows.Count > 0)

    {

      dt = ChangeSchema(dt);

      foreach (DataRow dr in dt.Rows)

      {

       userInfo = AdminUsers.GetUserInfo(Convert.ToInt32(dr["uid"].ToString().Trim()));

       dr["realname"] = userInfo.Realname.ToString().Trim();

       dr["mobile"] = userInfo.Mobile.ToString().Trim();

       dr["organization"] = filterIds(dr["organization"].ToString().Trim());

       dr["email"] = dr["email"].ToString().Trim();

       dr["username"] = dr["username"].ToString().Trim();

       if (dr["gender"].ToString() == "0")  dr["gender"] = "";

       if (dr["gender"].ToString() == "1")   dr["gender"] = "";

       }

      }

for (int i = 0; i < dt.Columns.Count; )

     {

       if (dt.Columns[i].ColumnName.Contains("username") || dt.Columns[i].ColumnName.Contains("realname") || dt.Columns[i].ColumnName.Contains("mobile") || dt.Columns[i].ColumnName.Contains("gender") || dt.Columns[i].ColumnName == "email" || dt.Columns[i].ColumnName.Contains("organization"))

{ i++; }

        else

         {

            dt.Columns.Remove(dt.Columns[i].ColumnName);

            dt.AcceptChanges();

          }

      }

      DataTable dtAuth = new DataTable();

      dtAuth.Columns.Add("真实姓名", typeof(string));

      dtAuth.Columns.Add("性别", typeof(string));

      dtAuth.Columns.Add("用户名", typeof(string));

      dtAuth.Columns.Add("手机号码", typeof(string));

      dtAuth.Columns.Add("所属企业", typeof(string));

      dtAuth.Columns.Add("E_mail", typeof(string));

      foreach (DataRow dr in dt.Rows)

      {

    dtAuth.Rows.Add(new Object[] { dr["realname"], dr["gender"], dr["username"], dr["mobile"], dr["organization"], dr["email"] });

      }

      DataTable2Excel(dtAuth, "userinfo");

  }

 

//dtData是要导出为ExcelDataTable,FileName是要导出的Excel文件名(不加.xls)

private void DataTable2Excel(System.Data.DataTable dtData, String FileName)

{

   System.Web.UI.WebControls.GridView dgExport = null;

   //当前对话

   System.Web.HttpContext curContext = System.Web.HttpContext.Current;

   //IO用于导出并返回excel文件

   System.IO.StringWriter strWriter = null;

   System.Web.UI.HtmlTextWriter htmlWriter = null;

   if (dtData != null)

   {

//设置编码和附件格式

    //System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8)作用是方式中文文件名乱码

     curContext.Response.Charset = "GB2312";

     curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;

     curContext.Response.AddHeader("content-disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls");

     curContext.Response.ContentType = "application nd.ms-excel";

//导出Excel文件

     strWriter = new System.IO.StringWriter();

      htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter);

      dgExport = new System.Web.UI.WebControls.GridView();

      dgExport.DataSource = dtData.DefaultView;

      dgExport.AllowPaging = false;

      dgExport.DataBind();

//下载到客户端

      dgExport.RenderControl(htmlWriter);

      curContext.Response.Write(strWriter.ToString());

      curContext.Response.End();

      }

}

转载于:https://www.cnblogs.com/Gemgin/archive/2013/06/13/3136296.html

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