executereader.aspx.cs

Microsoft?ASP.NET Programming with Microsoft Visual C#?.NET Version 2003 Step By Step

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace Chapter_09
{
	/// <summary>
	/// Summary description for ExecuteReader.
	/// </summary>
	public class ExecuteReader : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.DataGrid MyGrid;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			string ConnStr;
			string SQL;
			ConnStr = @"Data Source=(local)\VSdotNET;" +
				"database=pubs;integrated security=true";
			SqlConnection MySqlConn = new SqlConnection(ConnStr);
			MySqlConn.Open();
			try
			{
				SQL = "byroyalty";
				SqlCommand MySqlCmd = new SqlCommand(SQL,MySqlConn);

				MySqlCmd.CommandType = CommandType.StoredProcedure;
				SqlParameter MySqlParam = new SqlParameter("@percentage",SqlDbType.Int);
				MySqlParam.Value = 40;
				MySqlCmd.Parameters.Add(MySqlParam);
				SqlDataReader Reader;
				Reader = MySqlCmd.ExecuteReader();
				if (Reader.HasRows)
				{
					MyGrid.DataSource=Reader;
					MyGrid.DataBind();
				}
				else
				{
					Label Message = new Label();
					Message.Text = "No rows to display";
					Page.Controls.Add(Message);
				}
			}
			finally
			{
				MySqlConn.Close();
			}
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
	}
}