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Using Multiple ResultSets in a single DbDataReader
<%@ Page Language="C#"
AutoEventWireup="true"
CodeFile="Default.aspx.cs"
Inherits="MultipleResultSets" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Using Multiple ResultSets in a single DbDataReader</title>
</head>
<body>
<form id="form1" runat="server">
<div id="container">
<asp:GridView ID="grdBooks" runat="server" />
<h2>Authors</h2>
<asp:GridView ID="grdAuthors" runat="server" />
<asp:Label ID="labMsg" runat="server" />
</div>
</form>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Configuration;
public partial class MultipleResultSets : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string connString = ConfigurationManager.ConnectionStrings["Northwind"].ConnectionString;
SqlConnection conn = null;
SqlDataReader reader = null;
try
{
conn = new SqlConnection(connString);
conn.Open();
string sql = "SELECT * FROM Products; SELECT * FROM Customers;";
SqlCommand cmd = new SqlCommand(sql, conn);
reader = cmd.ExecuteReader();
grdAuthors.DataSource = reader;
grdAuthors.DataBind();
reader.NextResult();
grdBooks.DataSource = reader;
grdBooks.DataBind();
}
catch (Exception ex)
{
labMsg.Text = "Error occurred accessing the database";
labMsg.Text += "<br/>" + ex.Message;
}
finally
{
if (reader != null) reader.Close();
if (conn != null) conn.Close();
}
}
}
