addtitle.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 AddTitle.
	/// </summary>
	public class AddTitle : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox title_id;
		protected System.Web.UI.WebControls.TextBox title;
		protected System.Web.UI.WebControls.TextBox type;
		protected System.Web.UI.WebControls.TextBox pub_id;
		protected System.Web.UI.WebControls.TextBox price;
		protected System.Web.UI.WebControls.TextBox advance;
		protected System.Web.UI.WebControls.TextBox royalty;
		protected System.Web.UI.WebControls.TextBox ytd_sales;
		protected System.Web.UI.WebControls.TextBox notes;
		protected System.Web.UI.WebControls.TextBox pubdate;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.DataGrid titlegrid;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			DataSet MyDS = new DataSet();
			DataTable TitleTable;
			DataRow TitleRow;
			string ConnStr;
			ConnStr = @"server=(local)\VSdotNET;database=pubs;" +
				"Trusted_Connection=yes";
			string SQL;
			SQL = "SELECT * FROM Titles";
			SqlConnection MySqlConn = new SqlConnection(ConnStr);
			SqlDataAdapter MySqlAdapter = new SqlDataAdapter(SQL,ConnStr);
			SqlCommandBuilder MySqlCB = new SqlCommandBuilder(MySqlAdapter);

			MyDS.ReadXmlSchema(Server.MapPath("AddTitle.xsd"));

			if ( this.IsPostBack )
			{
				TitleTable = MyDS.Tables[0];
				TitleRow = TitleTable.NewRow();

				TitleRow["title_id"] = title_id.Text;
				TitleRow["title"] = title.Text;
				TitleRow["type"] = type.Text;
				TitleRow["pub_id"] = pub_id.Text;
				TitleRow["price"] = double.Parse(price.Text);
				TitleRow["advance"] = double.Parse(advance.Text);
				TitleRow["royalty"] = int.Parse(royalty.Text);
				TitleRow["ytd_sales"] = int.Parse(ytd_sales.Text);
				TitleRow["notes"] = notes.Text;
				TitleRow["pubdate"] = DateTime.Parse(pubdate.Text);
				TitleTable.Rows.Add(TitleRow);

				//Update back-end table based on new row
				MySqlAdapter.Update(MyDS);
				//Reset dataset before filling with data from DB
				MyDS.Reset();
				//Fill dataset with data from the Titles table
				MySqlAdapter.Fill(MyDS);

				titlegrid.DataSource = MyDS.Tables[0].DefaultView;
				titlegrid.DataBind();
			}
			else
			{
				//To prevent conflicts on multiple inserts, we can
				//generate a random value for title_id
				Random RandomNum = new Random();
				title_id.Text = "XX" + String.Format("{0:000#}", RandomNum.Next(9999));
			}
		}

		#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
	}
}