如何将多个数据表导出到单个 Excel 文件中的多个工作表

本文关键字：文件 Excel 单个 工作 数据表 | 更新日期: 2023-09-27 18:31:12

下面是我导出单个表数据的 C# 代码，但我需要将 3 个表数据导出到一个 excel 文件中。我需要将多个数据表导出到单个 Excel 文件中的多个工作表。

 protected void lnkbtn_Submit_Click(object sender, EventArgs e)
  {
    DateTime Fromdate = DateTime.ParseExact(txt_FromDate.Text, "MM/dd/yyyy", CultureInfo.InvariantCulture);
    DateTime Todate = DateTime.ParseExact(txt_ToDate.Text, "MM/dd/yyyy", CultureInfo.InvariantCulture);
    bo.Dateused = Fromdate;
    bo.Dateused2 = Todate;
    DataTable dt = bl.Get_Registrationdetailsbydate(bo);
    gv_Regdetails.DataSource = dt;
    gv_Regdetails.DataBind();
    Session["Fromdate"] = txt_FromDate.Text;
    Session["Todate"] = txt_ToDate.Text;
    if (gv_Regdetails.Rows.Count > 0)
    {
        Session["registrationtable_date"] = dt;
        btnExport.Visible = true;
    }
    else
    {
        Session["registrationtable_date"] = null;
        btnExport.Visible = false;
    }
}
protected void Button1_Click(object sender, ImageClickEventArgs e)
{
    DataGrid dg = new DataGrid();
    if (Session["registrationtable_date"] != null)
    {
        dg.DataSource = (DataTable)Session["registrationtable_date"];
        dg.DataBind();
        System.Web.HttpContext.Current.Response.Clear();
        System.Web.HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=TotalRegistrationDetails.xls");
        System.Web.HttpContext.Current.Response.Charset = "";
        System.Web.HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
        System.Web.HttpContext.Current.Response.ContentType = "application/vnd.xls";
        System.IO.StringWriter stringwrite = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter htmlwrite = new HtmlTextWriter(stringwrite);
        dg.RenderControl(htmlwrite);
        System.Web.HttpContext.Current.Response.Write(stringwrite.ToString());
        System.Web.HttpContext.Current.Response.End();
        Session.Remove("registrationtable_date");
        }
      }
    }

我的存储过程脚本：

ALTER PROCEDURE [dbo].[Get_Registrationdetailsbydate]
 (
  @Fromdate datetime,
  @Todate datetime
 )
 AS
BEGIN
 select Name,Email,Mobile,SubmissionDate from Registration  WHERE  (CONVERT(varchar(50), SubmissionDate, 101)  BETWEEN @Fromdate AND @Todate) 
END

提前谢谢你。

如何将多个数据表导出到单个 Excel 文件中的多个工作表

您可以查看此代码项目链接，该链接描述了将数据集导出到多个 Excel 工作表

http://www.codeproject.com/Articles/31516/Export-DataSet-to-Multiple-Excel-Sheets

上面的链接在这个SO问题中可用

请找到有关如何使用 C# 创建 Excel 文件的 SO 问题

使用数据集来存储两个数据表， 

 public DataSet getDataSetExportToExcel()
        {
            DataSet ds = new DataSet();
            DataTable dtEmp = new DataTable("Employee");
            dtEmp = getAllEmployeesList();
            DataTable dtEmpOrder = new DataTable("Order List");
            dtEmpOrder = getAllEmployeesOrderList();
            ds.Tables.Add(dtEmp);
            ds.Tables.Add(dtEmpOrder);
            return ds;
        }

和使用

dg.DataSource = (DataSet)Session["registrationtable_date"];
        dg.DataBind();
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