This is a migrated thread and some comments may be shown as answers.

Grid resets to default data bind on paging

1 Answer 106 Views

Grid

This is a migrated thread and some comments may be shown as answers.

1 Answer, 1 is accepted

answered on 29 Jul 2011, 08:41 PM

hi,

please check below code and let me know if any concern.

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Updategridfromddl.aspx.cs"

Inherits="TelerikTest.Web.Updategridfromddl" %>

<!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 runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<telerik:RadScriptManager ID="RadScriptManager" runat="server">

</telerik:RadScriptManager>

<div>

<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="true"

onselectedindexchanged="DropDownList1_SelectedIndexChanged">

<asp:ListItem Text="--Select--" Value="0" Selected="True"></asp:ListItem>

<asp:ListItem Text="1" Value="1"></asp:ListItem>

<asp:ListItem Text="2" Value="2"></asp:ListItem>

</asp:DropDownList>

<br />

<telerik:RadGrid ID="RadGrid1" runat="server" AllowPaging="true" PageSize="3"

onneeddatasource="RadGrid1_NeedDataSource"></telerik:RadGrid>

</div>

</form>

</body>

</html>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using Telerik.Web.UI;

namespace TelerikTest.Web

{

public partial class Updategridfromddl : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)

{

RadGrid1.Rebind();

}

protected void RadGrid1_NeedDataSource(object sender, Telerik.Web.UI.GridNeedDataSourceEventArgs e)

{

List<TwoStringParameterBE> lstTwoStringParameterBE = getList();

if (Convert.ToInt32(DropDownList1.SelectedValue) > 0)

{

lstTwoStringParameterBE = lstTwoStringParameterBE.FindAll(delegate(TwoStringParameterBE obj) { return obj.Name == DropDownList1.SelectedItem.ToString(); });

}

RadGrid1.DataSource = lstTwoStringParameterBE;

}

protected List<TwoStringParameterBE> getList()

{

List<TwoStringParameterBE> lstTwoStringParameterBE = new List<TwoStringParameterBE>();

for (int i = 0; i < 10; i++)

{

TwoStringParameterBE obj = new TwoStringParameterBE();

obj.Name = "1";

obj.value = "1";

lstTwoStringParameterBE.Add(obj);

}

for (int i = 0; i < 5; i++)

{

TwoStringParameterBE obj = new TwoStringParameterBE();

obj.Name = "2";

obj.value = "2";

lstTwoStringParameterBE.Add(obj);

}

return lstTwoStringParameterBE;

}

public class TwoStringParameterBE

{

private string _stringName;

private string _stringValue;

public string Name

{

get

{

return this._stringName;

}

set

{

this._stringName = value;

}

public string value

{

get

{

return this._stringValue;

}

set

{

this._stringValue = value;

}

Thanks,
Jayesh Goyani