defaultcs.aspx.cs

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using Telerik.QuickStart;
using Telerik.QuickStart.Grid;

namespace Telerik.GridExamplesCSharp.GeneralFeatures.Paging
{
	using System;
	using System.Data;
	using System.Data.OleDb;

	public abstract class DefaultCS : XhtmlPage
	{
		protected Telerik.WebControls.RadGrid RadGrid1;
		protected Telerik.WebControls.RadGrid RadGrid3;
		protected Telerik.WebControls.RadGrid RadGrid4;
		protected Telerik.WebControls.RadGrid RadGrid2;

		#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);
		}
		
		///		Required method for Designer support - do not modify
		///		the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.RadGrid1.NeedDataSource += new Telerik.WebControls.GridNeedDataSourceEventHandler(this.RadGrid1_NeedDataSource);
			this.RadGrid2.NeedDataSource += new Telerik.WebControls.GridNeedDataSourceEventHandler(this.RadGrid2_NeedDataSource);
			this.RadGrid3.NeedDataSource += new Telerik.WebControls.GridNeedDataSourceEventHandler(this.RadGrid3_NeedDataSource);
			this.RadGrid4.NeedDataSource += new Telerik.WebControls.GridNeedDataSourceEventHandler(this.RadGrid4_NeedDataSource);
			this.RadGrid4.PageIndexChanged += new Telerik.WebControls.GridPageChangedEventHandler(this.RadGrid4_PageIndexChanged);
		}
		#endregion

		
		private void RadGrid1_NeedDataSource(object source, Telerik.WebControls.GridNeedDataSourceEventArgs e)
		{
			RadGrid1.DataSource = DataSourceHelperCS.GetDataTable("SELECT CustomerID, CompanyName, ContactName, ContactTitle, Address, PostalCode FROM Customers");
		}

		private void RadGrid2_NeedDataSource(object source, Telerik.WebControls.GridNeedDataSourceEventArgs e)
		{
			RadGrid2.DataSource = DataSourceHelperCS.GetDataTable("SELECT CustomerID, CompanyName, ContactName, ContactTitle, Address, PostalCode FROM Customers");
		}

		private void RadGrid3_NeedDataSource(object source, Telerik.WebControls.GridNeedDataSourceEventArgs e)
		{
			RadGrid3.DataSource = DataSourceHelperCS.GetDataTable("SELECT CustomerID, CompanyName, ContactName, ContactTitle, Address, PostalCode FROM Customers");
		}

		//Custom paging
		int start_index = 0;

		//Prepare a set of items only for the selected page
		DataView CreateDataSource()
		{
			DataTable dt = new DataTable();
			DataRow dr;

			dt.Columns.Add(new DataColumn("ID", typeof(Int32)));
			dt.Columns.Add(new DataColumn("Property1", typeof(string)));
			dt.Columns.Add(new DataColumn("Property2", typeof(double)));

			for (int i = start_index; i < start_index + RadGrid4.MasterTableView.PageSize; i++) 
			{
				dr = dt.NewRow();

				dr[0] = i;
				dr[1] = "Item " + (1 + i).ToString();
				dr[2] = 1.23 * (100 - (i+1));

				dt.Rows.Add(dr);
			}

			return dt.DefaultView;
		}

		private void RadGrid4_PageIndexChanged(object source, Telerik.WebControls.GridPageChangedEventArgs e)
		{
			//Update start index when page index changes
			start_index = e.NewPageIndex * RadGrid4.MasterTableView.PageSize;
		}

		private void RadGrid4_NeedDataSource(object source, Telerik.WebControls.GridNeedDataSourceEventArgs e)
		{
			RadGrid4.DataSource = this.CreateDataSource();
		}
	}
}