A CRUD Form using SharpDevelop and PostgreSQL

/*
 * Created by SharpDevelop.
 * User: wancho
 * Date: 20/10/2009
 * Time: 14:37
 * 
 * To change this template use Tools | Options | Coding | Edit Standard Headers.
 */
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using Npgsql;
namespace Music
{
	/// <summary>
	/// Description of MainForm.
	/// </summary>
	public partial class MainForm : Form
	{
		public MainForm()
		{
			//
			// The InitializeComponent() call is required for Windows Forms designer support.
			//
			InitializeComponent();
			
			//
			// TODO: Add constructor code after the InitializeComponent() call.
			//
		}
		
		void MainFormLoad(object sender, EventArgs e)
		{
			// We fill our DataSet and we set the table in the Dataset as "artists"
			adapter.Fill(mainDS,"artists");
			// We must set the DataMember property in the BindingSource
			// it cannot be set at the designer since our DataSet isn't populated
		   bsource.DataMember="artists";
		   // We add the DataBinding to the TextBox linked to the "Text" property
		   // and linked to the BindingSource
		   t_artistID.DataBindings.Add("Text",bsource,"artistid");
		   t_name.DataBindings.Add("Text",bsource,"name");
          // Now we must set the Relation between the parameters and the fields 
          // in the Database
          cmdInsert.Parameters.Add(new NpgsqlParameter("p_artistID",NpgsqlTypes.NpgsqlDbType.Integer,0,"artistid"));
          cmdInsert.Parameters.Add(new NpgsqlParameter("p_name",NpgsqlTypes.NpgsqlDbType.Varchar,0,"name"));
          cmdDelete.Parameters.Add(new NpgsqlParameter("p_artistID",NpgsqlTypes.NpgsqlDbType.Integer,0,"artistid"));
          cmdUpdate.Parameters.Add(new NpgsqlParameter("p_artistID",NpgsqlTypes.NpgsqlDbType.Integer,0,"artistid"));
          cmdUpdate.Parameters.Add(new NpgsqlParameter("p_name",NpgsqlTypes.NpgsqlDbType.Varchar,0,"name"));
          
		}
		
		void ToolStripButton1Click(object sender, EventArgs e)
		{
			// We call this method to officialy end the editing of the Bindingsource
			bsource.EndEdit();
			// Now we will try to update our table
			try {
				adapter.Update(mainDS.Tables["artists"]);
			}
			// We must catch the Exception, because the user may cause a SQL exception 
			catch (Exception e_exception)
			{
				MessageBox.Show("Error.... "+e_exception.Message,"Error tryng to commit");
			}
		}
	}
}