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OnGridCreated Event - Firing Sequence Changed?

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Seth
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Seth asked on 22 Mar 2012, 02:57 AM
I have some UserControls that were working fine for quite some time (years in fact).  I have upgraded to a the latest (Q1 2012 release) of the controls and it no longer works correctly.  They are user controls because I am loading them dynamically in a tab control/pageview control...

The part that is no longer working is that I am grabbing the toolbar that is positioned above the RadGrid and changing some of the buttons based on some user permissions in the OnGridCreated event handler.  It can no longer find the RadToolbar control.  If I place a button at the bottom of my control and try to find the RadToolbar at that point, it finds it.  Which lead me to think that the OnGridCreated event is now firing before the RadToolbar has been created.

So, does anyone know if anything changed in this new version or even the one previous?  I think it was fine in v.2011.1.519.35.

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Richard
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answered on 23 Mar 2012, 10:01 PM
Seth:

Can you post your .aspx and the javascript that stopped working? That would help to see your issue.

This could have something to do with the updated version of jQuery 1.7.1 that is now built in to the newer release of the Telerik controls.

Are you insuring that the document is fully loaded before attempting to find the Toolbar by means of the $(document).ready(function() { }?

Regards,
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Seth
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answered on 26 Mar 2012, 04:28 PM
The following source worked fine before this version...

The offending line is getting the toolBar object, actually attempting to access the object on the proceeding line causes the error because the toolBar object was not found.

function DomesticGridCreated(sender, eventArgs) {
    var Domestic = $find('<%=rgDomestic.ClientID %>');
   
    if (filterDomesticInitialize) {
        Domestic.get_masterTableView().hideFilterItem();
         
    }
 
    var toolBar  = $find("<%= RadToolBar1.ClientID %>");
    var lastItem = toolBar.get_items().getItem(toolBar.get_items().get_count() - 2);
    var nextToLastItem = toolBar.get_items().getItem(toolBar.get_items().get_count() - 3);

<telerik:RadSplitter ID="rsplRadSplitter" runat="server" Orientation="Horizontal" Width="100%" Height="100%">
        <telerik:RadPane ID="rpToolBar" runat="server" Scrolling="None" Width="100%" Height="32">
                    
            <telerik:RadToolBar id="RadToolBar1" runat="server" OnClientButtonClicked="onButtonClicked"  Height="30" >
                <Items>
                    <telerik:RadToolBarButton  Value="SearchText">
                        <ItemTemplate>
                        <div style="padding-left:5px">
                        <table border="0" cellspacing="0" cellpadding="0">
                            <tr>
                                <td>
                                    <telerik:RadTextBox runat="server" ID="txtQuickSearch" EmptyMessage="Quick Search"   ClientEvents-OnKeyPress="onKeyPress"/>
                                </td>
                            </tr>
                        </table>
                        </div>
                        </ItemTemplate>
                    </telerik:RadToolBarButton>
                                        
                    <telerik:RadToolBarButton ImageUrl="~/Images/Icons/search.gif" runat="server" Value="Search"/>
                                            
                    <telerik:RadToolBarButton  Value="separator1" IsSeparator="true" Height="18px"/>
                    <telerik:RadToolBarDropDown  Text="Filter" Visible="true">
                        <Buttons>
                            <telerik:RadToolBarButton Value="ShowFilter" Text="Show Filter"  ImageUrl="~/Images/Icons/filtericon.gif"/>
                            <telerik:RadToolBarButton Value="AdvancedFilter" Text="Advanced Filter" ImageUrl="~/Images/AdvFilter.png" Visible="true"></telerik:RadToolBarButton>
                            <telerik:RadToolBarButton Value="ClearFilter" Text="Clear Advanced Filter" Visible="false" Enabled="false"></telerik:RadToolBarButton>
                        </Buttons>
                    </telerik:RadToolBarDropDown>
                    <telerik:RadToolBarButton  Value="ExpandAll" Text="Expand All" ImageUrl="~/Images/Icons/expand.gif"/>
                    <telerik:RadToolBarButton  Value="CollapseAll" Text="Collapse All" ImageUrl="~/Images/Icons/contract.gif"/>
                    <telerik:RadToolBarButton  Value="Refresh" Text="Refresh" ImageUrl="~/Images/Icons/refresh.png" />
                                             
                    <telerik:RadToolBarButton Value="separator2" IsSeparator="true" Height="18px" Visible="True"/>
                    <telerik:RadToolBarButton Value="ExportToExcel" Text="Export To Excel" ImageUrl="~/Images/Icons/excelicon_small.gif" />
                    <telerik:RadToolBarButton value="ExportToCSV" Text="Export To CSV" ImageUrl="~/Images/Icons/icon_csv.gif" />
                     <telerik:RadToolBarDropDown  Text="Change View" >
                        <Buttons >
                            <telerik:RadToolBarButton  Value="Open"  Text="Open" CheckOnClick="true" Checked="true">
                            </telerik:RadToolBarButton>
                            <telerik:RadToolBarButton Value="Closed" Text="Closed" CheckOnClick="true"></telerik:RadToolBarButton>
                            <telerik:RadToolBarButton Value="Pending" Text="Pending" Enabled="false" CheckOnClick="true"></telerik:RadToolBarButton>
                        </Buttons>
                    </telerik:RadToolBarDropDown>
                </Items>
            </telerik:RadToolBar>
        </telerik:RadPane>
        </telerik:RadSplitter>
                           
    <telerik:RadGrid runat="server" ID="rgDomestic" AllowFilteringByColumn="true"
        AllowSorting="true"  ShowFooter="True" EnableLinqExpressions="false"
        AllowPaging="True"  AllowMultiRowSelection="true"
        ShowGroupPanel="true" ShowHeader="true" 
        PageSize="15" AutoGenerateColumns="false" >
        <ClientSettings AllowDragToGroup="true" AllowGroupExpandCollapse="true" EnableRowHoverStyle="true"  >
            <ClientEvents OnGridCreated="DomesticGridCreated" OnRowDblClick="RowDoubleClick"   OnKeyPress="GridKeyPress" OnRowContextMenu="RowContextMenu"/>
            <Selecting AllowRowSelect="true" />
            <Scrolling AllowScroll="True" UseStaticHeaders="true" SaveScrollPosition="true" FrozenColumnsCount="2"/>
        </ClientSettings>
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Maria Ilieva
Telerik team
answered on 29 Mar 2012, 11:41 AM
Hello,

We haven't made any specific changes in the RadGrid event sequence in the latest release so the presented issue is rather strange. Could you please test the apply the access logic in the PageLoad instead of the GridCreated event and see if this makes any difference.

All the best,
Maria Ilieva
the Telerik team
If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed now.
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Seth
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answered on 29 Mar 2012, 01:26 PM
PageLoad?  I am doing this client-side and it is a UserControl so I don't have a onBodyLoad option.

I will also add, and probably should have included in my original post that this is a UserControl that is being dynamically loaded into a PageView that is part of a TabControl when requested by the user.  This is when the error happens.  It seems to be fine if the control is loaded when the page is initially loaded.
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Seth
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answered on 30 Mar 2012, 05:16 PM
Has anything changed in the client-side events since version 2010.2.826.35?  A coworker just upgraded to 2011.2.915.35 and is now also getting this same error.
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Condorito
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answered on 02 Apr 2012, 04:51 PM
Hi Maria,

I'm working with Seth on this project.  Below is a stripped-down version of our project that displays the behavior that Seth mentions above. 

I first run the project using the Telerik assembly version 2010.2.826.40 (I used .NET Framework 4.0 for this example, but the 3.5 version displays that behavior as well), and everything works as expected.  When you click on a tab, it switches to its pageview.  No issues at all.  I then remove the reference to that assembly and then add a reference to a newer version of the assembly (I tried 2011.2.915.40, but newer versions cause this behavior to show up as well).  I then run the project, click on a tab, and I get this error message back:

"Microsoft JScript runtime error: Unable to get value of the property 'get_items': object is null or undefined"

because the toolbar object comes back as null, and the page breaks. 

Here is the code that I used:


ToolbarDefault.aspx
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="ToolbarDefault.aspx.vb" Inherits="TelerikProject.ToolbarDefault" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<head runat="server">
    <title></title>
    <telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
    <script type="text/javascript">
        //<![CDATA[
 
 
        function onTabSelecting(sender, args) {
 
            if (args.get_tab().get_pageViewID()) {
 
                args.get_tab().set_postBack(false);
 
            }
 
        }
 
        function onTabSelected(sender, args) {
            if (args.get_tab().get_pageViewID()) {
 
                var RadToolBar1 = $find(args.get_tab().get_value() + "_userControl_RadToolBar1");
                var filterButton = RadToolBar1.findItemByValue("Filter");
 
                if (filterButton) {
                    switch (args.get_tab().get_value()) {
                        case "Air":
                            filterButton.set_text(showHideFilterAirText);
                            break;
                        case "Domestic":
                            filterButton.set_text(showHideFilterDomesticText);
                            break;
                         
                    }
                }
            }
 
        }
 
          //]]>
    </script>
    </telerik:RadScriptBlock>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <telerik:RadScriptManager ID="rsmMain" runat="server">
        </telerik:RadScriptManager>
     
     <telerik:RadAjaxManager ID="ramMain" runat="server">
       <AjaxSettings>
             
                <telerik:AjaxSetting AjaxControlID="rtsMain">
                    <UpdatedControls>
                        <telerik:AjaxUpdatedControl ControlID="rtsMain" />
                        <telerik:AjaxUpdatedControl ControlID="rmpMain" LoadingPanelID="ralpDefault" />
                    </UpdatedControls>
                </telerik:AjaxSetting>
                <telerik:AjaxSetting AjaxControlID="rmpMain">
                    <UpdatedControls>
                        <telerik:AjaxUpdatedControl ControlID="rmpMain" LoadingPanelID="ralpDefault" />
                    </UpdatedControls>
                </telerik:AjaxSetting>
           </AjaxSettings>
 
     </telerik:RadAjaxManager>
 
         <telerik:RadAjaxLoadingPanel ID="ralpDefault" runat="server" Height="75px" Width="75px">
        </telerik:RadAjaxLoadingPanel>
 
 
 
    <telerik:RadTabStrip OnClientTabSelecting="onTabSelecting"  OnClientTabSelected="onTabSelected"  ID="rtsMain" runat="server"  Width="100%" Align="Left" MultiPageID="rmpMain" >
        </telerik:RadTabStrip>
 
         <telerik:RadMultiPage ID="rmpMain" runat="server" Height="100%">
        </telerik:RadMultiPage>
 
 
    </div>
    </form>
</body>
</html>

ToolbarDefault.aspx.vb

Imports Telerik.Web.UI
Public Class ToolbarDefault
    Inherits System.Web.UI.Page
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Page.IsPostBack = False Then
            AddTab("Domestic", "Domestic")
            AddTab("Air", "International Air")
 
 
            AddPageView(rtsMain.Tabs(0))
            rtsMain.SelectedIndex = 0
            rtsMain.Tabs(0).PageView.Selected = True
        End If
 
    End Sub
 
    Private Sub AddTab(ByVal tabName As String, ByVal TabText As String)
        Dim tab As New RadTab()
        tab.Text = TabText
        tab.Value = tabName
        rtsMain.Tabs.Add(tab)
    End Sub
 
    Protected Sub rtsMain_TabClick(ByVal sender As Object, ByVal e As Telerik.Web.UI.RadTabStripEventArgs) Handles rtsMain.TabClick
        AddPageView(e.Tab)
        e.Tab.PageView.Selected = True
    End Sub
 
    Private Sub AddPageView(ByVal tab As RadTab)
        Dim pageView As RadPageView = New RadPageView
        pageView.ID = tab.Value
        If IsNothing(rmpMain.FindPageViewByID(tab.Value)) Then
            rmpMain.PageViews.Add(pageView)
        End If
        tab.PageViewID = pageView.ID
    End Sub
 
 
    Protected Sub rmpMain_PageViewCreated(ByVal sender As Object, ByVal e As Telerik.Web.UI.RadMultiPageEventArgs) Handles rmpMain.PageViewCreated
        Dim userControlName As String = e.PageView.ID & ".ascx"
 
        Dim userControl As Control = Page.LoadControl("~/" & userControlName)
        userControl.ID = e.PageView.ID & "_userControl"
 
        e.PageView.Controls.Add(userControl)
    End Sub
 
 
End Class

Air.ascx

<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="Air.ascx.vb" Inherits="TelerikProject.Air" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
 
 <telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
        <script type="text/javascript">
            //<![CDATA[
        function rgAirGridCreated(sender, eventArgs) {
 
            var Air = $find('<%=rgAir.ClientID %>');
 
 
 
 
            var toolBar = $find("<%= RadToolBar1.ClientID %>");
 
            var lastItem = toolBar.get_items().getItem(toolBar.get_items().get_count() - 2);
 
            var nextToLastItem = toolBar.get_items().getItem(toolBar.get_items().get_count() - 3);
 
        }
    </script>
</telerik:RadScriptBlock>
 
 <telerik:RadSplitter ID="rsplRadSplitter" runat="server" Orientation="Horizontal" Width="100%" Height="100%">
  
        <telerik:RadPane ID="rpToolBar" runat="server" Scrolling="None" Width="100%" Height="32">
  
                     
  
            <telerik:RadToolBar id="RadToolBar1" runat="server" Height="30" >
  
                <Items>
  
                    <telerik:RadToolBarButton  Value="SearchText">
  
                        <ItemTemplate>
  
                        <div style="padding-left:5px">
  
                        <table border="0" cellspacing="0" cellpadding="0">
  
                            <tr>
  
                                <td>
 
                                    <telerik:RadTextBox runat="server" ID="txtQuickSearch" EmptyMessage="Quick Search"   />
  
                                </td>
  
                            </tr>
  
                        </table>
  
                        </div>
  
                        </ItemTemplate>
  
                    </telerik:RadToolBarButton>
  
                                         
  
                    <telerik:RadToolBarButton ImageUrl="~/Images/Icons/search.gif" runat="server" Value="Search"/>
  
                                             
  
                    <telerik:RadToolBarButton  Value="separator1" IsSeparator="true" Height="18px"/>
  
                    <telerik:RadToolBarDropDown  Text="Filter" Visible="true">
  
                        <Buttons>
  
                            <telerik:RadToolBarButton Value="ShowFilter" Text="Show Filter"  ImageUrl="~/Images/Icons/filtericon.gif"/>
  
                            <telerik:RadToolBarButton Value="AdvancedFilter" Text="Advanced Filter" ImageUrl="~/Images/AdvFilter.png" Visible="true"></telerik:RadToolBarButton>
  
                            <telerik:RadToolBarButton Value="ClearFilter" Text="Clear Advanced Filter" Visible="false" Enabled="false"></telerik:RadToolBarButton>
  
                        </Buttons>
  
                    </telerik:RadToolBarDropDown>
  
                    <telerik:RadToolBarButton  Value="ExpandAll" Text="Expand All" ImageUrl="~/Images/Icons/expand.gif"/>
  
                    <telerik:RadToolBarButton  Value="CollapseAll" Text="Collapse All" ImageUrl="~/Images/Icons/contract.gif"/>
  
                    <telerik:RadToolBarButton  Value="Refresh" Text="Refresh" ImageUrl="~/Images/Icons/refresh.png" />
  
                                              
  
                    <telerik:RadToolBarButton Value="separator2" IsSeparator="true" Height="18px" Visible="True"/>
  
                    <telerik:RadToolBarButton Value="ExportToExcel" Text="Export To Excel" ImageUrl="~/Images/Icons/excelicon_small.gif" />
  
                    <telerik:RadToolBarButton value="ExportToCSV" Text="Export To CSV" ImageUrl="~/Images/Icons/icon_csv.gif" />
  
                     <telerik:RadToolBarDropDown  Text="Change View" >
  
                        <Buttons >
  
                            <telerik:RadToolBarButton  Value="Open"  Text="Open" CheckOnClick="true" Checked="true">
  
                            </telerik:RadToolBarButton>
  
                            <telerik:RadToolBarButton Value="Closed" Text="Closed" CheckOnClick="true"></telerik:RadToolBarButton>
  
                            <telerik:RadToolBarButton Value="Pending" Text="Pending" Enabled="false" CheckOnClick="true"></telerik:RadToolBarButton>
  
                        </Buttons>
  
                    </telerik:RadToolBarDropDown>
  
                </Items>
  
            </telerik:RadToolBar>
  
        </telerik:RadPane>
  
        </telerik:RadSplitter>
 
                            
  
    <telerik:RadGrid runat="server" ID="rgAir" AllowFilteringByColumn="true"
  
        AllowSorting="true"  ShowFooter="True" EnableLinqExpressions="false"
  
        AllowPaging="True"  AllowMultiRowSelection="true"
  
        ShowGroupPanel="true" ShowHeader="true"
  
        PageSize="15" AutoGenerateColumns="false" >
  
        <ClientSettings AllowDragToGroup="true" AllowGroupExpandCollapse="true" EnableRowHoverStyle="true"  >
  
            <ClientEvents OnGridCreated="rgAirGridCreated"/>
  
            <Selecting AllowRowSelect="true" />
  
            <Scrolling AllowScroll="True" UseStaticHeaders="true" SaveScrollPosition="true" FrozenColumnsCount="2"/>
  
        </ClientSettings>
            <MasterTableView>
                <Columns>
                    <telerik:GridBoundColumn HeaderText="Dosage" DataField="Dosage" />
                    <telerik:GridBoundColumn HeaderText="Drug" DataField="Drug" />
                    <telerik:GridBoundColumn HeaderText="Patient" DataField="Patient" />
                    <telerik:GridBoundColumn HeaderText="Date" DataField="Date" />
                </Columns>
            </MasterTableView>
        </telerik:RadGrid>

Air.ascx.vb

Public Class Air
    Inherits System.Web.UI.UserControl
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
    End Sub
 
 
    Function GetTable() As DataTable
        ' Create new DataTable instance.
        Dim table As New DataTable
        ' Create four typed columns in the DataTable.
        table.Columns.Add("Dosage", GetType(Integer))
        table.Columns.Add("Drug", GetType(String))
        table.Columns.Add("Patient", GetType(String))
        table.Columns.Add("Date", GetType(DateTime))
        ' Add five rows with those columns filled in the DataTable.
        table.Rows.Add(25, "Indocin", "John", DateTime.Now)
        table.Rows.Add(50, "Enebrel", "Mike", DateTime.Now)
        table.Rows.Add(10, "Hydralazine", "Jonathan", DateTime.Now)
        table.Rows.Add(21, "Combivent", "Chris", DateTime.Now)
        table.Rows.Add(100, "Dilantin", "Rob", DateTime.Now)
        Return table
    End Function
 
    Private Sub rgAir_NeedDataSource(sender As Object, e As Telerik.Web.UI.GridNeedDataSourceEventArgs) Handles rgAir.NeedDataSource
        rgAir.DataSource = GetTable()
    End Sub
End Class

Domestic.ascx
<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="Domestic.ascx.vb" Inherits="TelerikProject.Domestic" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
 
   <telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
        <script type="text/javascript">
            //<![CDATA[
        function GridCreated(sender, eventArgs) {
 
            var Domestic = $find('<%=rgDomestic.ClientID %>');
 
 
            var toolBar = $find("<%= RadToolBar1.ClientID %>");
 
            var lastItem = toolBar.get_items().getItem(toolBar.get_items().get_count() - 2);
 
            var nextToLastItem = toolBar.get_items().getItem(toolBar.get_items().get_count() - 3);
 
        }
    </script>
</telerik:RadScriptBlock>
 
 <telerik:RadSplitter ID="rsplRadSplitter" runat="server" Orientation="Horizontal" Width="100%" Height="100%">
  
        <telerik:RadPane ID="rpToolBar" runat="server" Scrolling="None" Width="100%" Height="32">
  
                     
  
            <telerik:RadToolBar id="RadToolBar1" runat="server" Height="30" >
  
                <Items>
  
                    <telerik:RadToolBarButton  Value="SearchText">
  
                        <ItemTemplate>
  
                        <div style="padding-left:5px">
  
                        <table border="0" cellspacing="0" cellpadding="0">
  
                            <tr>
  
                                <td>
 
                                    <telerik:RadTextBox runat="server" ID="txtQuickSearch" EmptyMessage="Quick Search"   />
  
                                </td>
  
                            </tr>
  
                        </table>
  
                        </div>
  
                        </ItemTemplate>
  
                    </telerik:RadToolBarButton>
  
                                         
  
                    <telerik:RadToolBarButton ImageUrl="~/Images/Icons/search.gif" runat="server" Value="Search"/>
  
                                             
  
                    <telerik:RadToolBarButton  Value="separator1" IsSeparator="true" Height="18px"/>
  
                    <telerik:RadToolBarDropDown  Text="Filter" Visible="true">
  
                        <Buttons>
  
                            <telerik:RadToolBarButton Value="ShowFilter" Text="Show Filter"  ImageUrl="~/Images/Icons/filtericon.gif"/>
  
                            <telerik:RadToolBarButton Value="AdvancedFilter" Text="Advanced Filter" ImageUrl="~/Images/AdvFilter.png" Visible="true"></telerik:RadToolBarButton>
  
                            <telerik:RadToolBarButton Value="ClearFilter" Text="Clear Advanced Filter" Visible="false" Enabled="false"></telerik:RadToolBarButton>
  
                        </Buttons>
  
                    </telerik:RadToolBarDropDown>
  
                    <telerik:RadToolBarButton  Value="ExpandAll" Text="Expand All" ImageUrl="~/Images/Icons/expand.gif"/>
  
                    <telerik:RadToolBarButton  Value="CollapseAll" Text="Collapse All" ImageUrl="~/Images/Icons/contract.gif"/>
  
                    <telerik:RadToolBarButton  Value="Refresh" Text="Refresh" ImageUrl="~/Images/Icons/refresh.png" />
  
                                              
  
                    <telerik:RadToolBarButton Value="separator2" IsSeparator="true" Height="18px" Visible="True"/>
  
                    <telerik:RadToolBarButton Value="ExportToExcel" Text="Export To Excel" ImageUrl="~/Images/Icons/excelicon_small.gif" />
  
                    <telerik:RadToolBarButton value="ExportToCSV" Text="Export To CSV" ImageUrl="~/Images/Icons/icon_csv.gif" />
  
                     <telerik:RadToolBarDropDown  Text="Change View" >
  
                        <Buttons >
  
                            <telerik:RadToolBarButton  Value="Open"  Text="Open" CheckOnClick="true" Checked="true">
  
                            </telerik:RadToolBarButton>
  
                            <telerik:RadToolBarButton Value="Closed" Text="Closed" CheckOnClick="true"></telerik:RadToolBarButton>
  
                            <telerik:RadToolBarButton Value="Pending" Text="Pending" Enabled="false" CheckOnClick="true"></telerik:RadToolBarButton>
  
                        </Buttons>
  
                    </telerik:RadToolBarDropDown>
  
                </Items>
  
            </telerik:RadToolBar>
  
        </telerik:RadPane>
  
        </telerik:RadSplitter>
 
                            
  
    <telerik:RadGrid runat="server" ID="rgDomestic" AllowFilteringByColumn="true"
  
        AllowSorting="true"  ShowFooter="True" EnableLinqExpressions="false"
  
        AllowPaging="True"  AllowMultiRowSelection="true"
  
        ShowGroupPanel="true" ShowHeader="true"
  
        PageSize="15" AutoGenerateColumns="false" >
  
        <ClientSettings AllowDragToGroup="true" AllowGroupExpandCollapse="true" EnableRowHoverStyle="true"  >
  
            <ClientEvents OnGridCreated="GridCreated"/>
  
            <Selecting AllowRowSelect="true" />
  
            <Scrolling AllowScroll="True" UseStaticHeaders="true" SaveScrollPosition="true" FrozenColumnsCount="2"/>
  
        </ClientSettings>
         <MasterTableView>
                <Columns>
                    <telerik:GridBoundColumn HeaderText="Dosage" DataField="Dosage" />
                    <telerik:GridBoundColumn HeaderText="Drug" DataField="Drug" />
                    <telerik:GridBoundColumn HeaderText="Patient" DataField="Patient" />
                    <telerik:GridBoundColumn HeaderText="Date" DataField="Date" />
                </Columns>
            </MasterTableView>
        </telerik:RadGrid>

Domestic.ascx.vb

Public Class Domestic
    Inherits System.Web.UI.UserControl
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
    End Sub
 
    Function GetTable() As DataTable
        ' Create new DataTable instance.
        Dim table As New DataTable
        ' Create four typed columns in the DataTable.
        table.Columns.Add("Dosage", GetType(Integer))
        table.Columns.Add("Drug", GetType(String))
        table.Columns.Add("Patient", GetType(String))
        table.Columns.Add("Date", GetType(DateTime))
        ' Add five rows with those columns filled in the DataTable.
        table.Rows.Add(25, "Indocin", "David", DateTime.Now)
        table.Rows.Add(50, "Enebrel", "Sam", DateTime.Now)
        table.Rows.Add(10, "Hydralazine", "Christoff", DateTime.Now)
        table.Rows.Add(21, "Combivent", "Janet", DateTime.Now)
        table.Rows.Add(100, "Dilantin", "Melanie", DateTime.Now)
        Return table
    End Function
 
 
    Private Sub rgDomestic_NeedDataSource(sender As Object, e As Telerik.Web.UI.GridNeedDataSourceEventArgs) Handles rgDomestic.NeedDataSource
        rgDomestic.DataSource = GetTable()
    End Sub
End Class

Thank you.

0
Maria Ilieva
Telerik team
answered on 03 Apr 2012, 08:15 AM
Hello Juan,

I tested the provided code locally with the latest version of RadControls and was able to replicate the issue you are facing. Even we haven't made any breaking changes on our RadGrid event's sequence are correct that the RadToolBar is null in the RadGrid created event. However please note that this is not a totally correct approach to manipulate one control on another control's created event. In most case you could not ensure these controls are properly created, especially when ajax is used like in your case. Therefore, as I previously suggested, proper approach in this case would be to use the client pageLoad event instead of RadGrid created. Find attaches a sample runnable example which uses this approach and which works correctly on my end. Test it locally and let me know if it covers your requirements.



All the best,
Maria Ilieva
the Telerik team
If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed now.
0
Seth
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answered on 03 Apr 2012, 02:35 PM
That solved it.  Thank you for the direction.
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