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

Problem with custom paging of RadGridView which is loaded into asp:panel

8 Answers 82 Views

Grid

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

tungnt185 asked on 21 May 2013, 08:58 AM

Hi Telerik team,

I'm using RadGridView and I'm facing a strange problem now. I've:

1 default.aspx that have an asp:panel
1 usercontrol uc1 that have a RadGridView with Custom Paging using ObjectDataSource

In default.aspx page_load event I load uc1 into the panel:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

Dim uc As UserControl = Page.LoadControl("~/uc1.ascx")

pnlGrid.Controls.Add(uc)

End Sub

Everything work fine except paging next page, it can't next to page 3 because SelectMethod of ObjectDataSource always run twice with startRowIndex = 0 at the first time run:

<asp:ObjectDataSource runat="server" ID="odsTest" TypeName="WebApplication2.BL" EnablePaging="true" SelectMethod="GetAllTest" SelectCountMethod="GetTestCount" MaximumRowsParameterName="maximumRows" StartRowIndexParameterName="startRowIndex"></asp:ObjectDataSource>

After debug I found this problem cause of loading usercontrol to panel if panel markup like this:

<asp:Panel ID="pnlGrid" runat="server">

</asp:Panel>

(There are a <asp:Literal> control auto-generated here)

But if panel markup like:

<asp:Panel ID="pnlGrid" runat="server"></asp:Panel>

or

<asp:Panel ID="pnlGrid" runat="server"/>

problem not occur.

So what is exactly problem here? It's my fault or it is by design?

Thanks so much.

8 Answers, 1 is accepted

answered on 24 May 2013, 12:23 PM

Thanks Andrey for your response.

Below is my markup and code. Please examine it.

Default.aspx:

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="WebApplication2._Default" %>

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title></title>

</head>

<body>

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

<telerik:RadScriptManager runat="server" ID="RadScriptManager" AsyncPostBackTimeout="600">

</telerik:RadScriptManager>

<telerik:RadStyleSheetManager ID="RadStyleSheetManager1" runat="server" />

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">

</telerik:RadAjaxManager>

<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server">

</telerik:RadAjaxLoadingPanel>

<asp:Panel runat="server" ID="pnlTest">

</asp:Panel>

</form>

</body>

</html>

Default.aspx.vb

Imports System.Data.Common

Imports Telerik.Web.UI

Public Class _Default

Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

If String.IsNullOrEmpty(CurrentControl) Then

LoadUserControl("~/TestUC.ascx")

Else

LoadUserControl(CurrentControl)

End If

End Sub

Private sCurrentControlKey As String = "CurrentControl"

Public Property CurrentControl() As String

Get

Return IIf(Me.ViewState(sCurrentControlKey) Is Nothing, String.Empty, CType(Me.ViewState(sCurrentControlKey), String))

End Get

Set(ByVal value As String)

Me.ViewState(sCurrentControlKey) = value

End Set

End Property

Private Sub LoadUserControl(controlName As String)

pnlTest.Controls.Clear()

Dim MyControl As UserControl = CType(Page.LoadControl(controlName), UserControl)

Dim userControlID As String = controlName.Split(".")(0)

MyControl.ID = userControlID.Replace("/", "").Replace("~", "")

pnlTest.Controls.Add(MyControl)

Me.CurrentControl = controlName

End Sub

End Class

TestUC.ascx

<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="TestUC.ascx.vb" Inherits="WebApplication2.TestUC" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>

<telerik:RadAjaxManagerProxy ID="RadAjaxManagerProxy1" runat="server">

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="grdTest">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="grdTest" LoadingPanelID="RadAjaxLoadingPanel1" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManagerProxy>

<asp:ObjectDataSource runat="server" ID="odsTest" TypeName="WebApplication2.BL" EnablePaging="true" SelectMethod="GetAllData" SelectCountMethod="GetDataCount" MaximumRowsParameterName="maximumRows" StartRowIndexParameterName="startRowIndex"></asp:ObjectDataSource>

<telerik:RadGrid ID="grdTest" runat="server" DataSourceID="odsTest" AllowPaging="true" PagerStyle-Position="Bottom" AllowMultiRowSelection="true" AllowSorting="true" CellSpacing="0" GridLines="None">

<MasterTableView Width="100%" CommandItemDisplay="Top" AutoGenerateColumns="false" AllowMultiColumnSorting="true" DataKeyNames="ID">

<Columns>

<telerik:GridClientSelectColumn></telerik:GridClientSelectColumn>

<telerik:GridTemplateColumn UniqueName="Title" SortExpression="Title" DataField="Title">

<ItemTemplate>

<table>

<tr>

<td><%# Eval("Title")%></td>

</tr>

</table>

</ItemTemplate>

</telerik:GridTemplateColumn>

</Columns>

</MasterTableView>

<CommandItemStyle Height="27px"></CommandItemStyle>

<ClientSettings>

<Selecting AllowRowSelect="true" />

</ClientSettings>

</telerik:RadGrid>

BL.vb

Imports System.Data.Common

Imports Microsoft.Practices.EnterpriseLibrary.Data

Public Class BL

Private db As Database

Public Function GetData(ByVal startRowIndex As Integer, ByVal maximumRows As Integer) As DataTable

Dim cmd As DbCommand = db.GetStoredProcCommand("ProcGetData", startRowIndex, maximumRows)

cmd.CommandType = CommandType.StoredProcedure

cmd.CommandTimeout = 30

Return db.ExecuteDataSet(cmd).Tables(0)

End Function

Public Function GetDataCount() As Integer

Dim cmd As DbCommand = db.GetStoredProcCommand("ProcGetDataCount")

cmd.CommandType = CommandType.StoredProcedure

cmd.CommandTimeout = 30

Return CInt(db.ExecuteScalar(cmd))

End Function

Public Sub New()

db = DatabaseFactory.CreateDatabase("testConn")

End Sub

End Class

Product Bundles

DevCraft

Web

Mobile

Document Management

Desktop

Reporting & Mocking

Automated Testing

CMS

UI/UX Tools

Debugging

Free Tools

Support and Learning

Productivity and Design Tools

Problem with custom paging of RadGridView which is loaded into asp:panel

8 Answers, 1 is accepted