Questions on UI for ASP.NET AJAX Forum

1 answer

137 views

CheckBox within a Radgrid Template Column?

Hi,

I am trying to use a data bound Checkbox in a RadGrid Template Column but have come across several problems.
Firstly, i was trying to use the asp checkbox control. This works for displaying the existing data from my database but i get a DBnull error when i try to insert a new record.
So i tried to resolve this error by trying to capture the DBNull with a CheckNull function:

Public Function CheckNull(ByVal val As Object) As Boolean

If val.GetType Is DBNull.Value.GetType Then

Return False

Else

Return Convert.ToBoolean(val)

End If

End Function

but this didn't work. I then tried a custom CheckBox which overrides the DBNull error but this didn't fix the problem either

Public Class CustomCheckBox

Inherits Web.UI.WebControls.CheckBox

Public Property CheckedOverride() As Object

Get

Return MyBase.Checked

End Get

Set(ByVal value As Object)

If IsDBNull(value) Then

MyBase.Checked = False

ElseIf value.GetType() = GetType(Boolean) Then

MyBase.Checked = value

Else

MyBase.Checked = False

End If

End Set

End Property

End Class

I then searched the Telerik forums for a solution & came across the telerik:GridCheckBoxColumn (from this site http://demos.telerik.com/aspnet-ajax/grid/examples/dataediting/alleditablecolumns/defaultcs.aspx) BUT i do not have this available to me! When i enter this control i get an error saying it does not exist.

Is this an old control item which has been phased out or should it still be available to me on the latest version of Telerik controls?

if it isn't available then can you provide an alternative solution for the databound checkbox which is causing a DBnull conversion error?

Regards,

Shuja

Grid

answered on 20 May 2011

1 answer

93 views

Filter_Functions

Hi,

<telerik:GridBoundColumn DataField="category_name" HeaderText="Kategori" FilterControlWidth="100px" AutoPostBackOnFilter="true" ShowFilterIcon="false" CurrentFilterFunction="Contains" SortExpression="category_name"
DataType="System.String">

CurrentFilterFunction is case sensetive, For example, I want to find AHMET. When I wrote ahmet, it gave "No records to display."
But there was AHMET in the record. I tied other founctions like contains, staerwith... etc. But I didn't find helpful function. Can yqu help me?

Thank you.

Filter

answered on 20 May 2011

2 answers

202 views

RadToolBarButton new window

Hello

I have a radtoolbar with 6 buttons in it. The button redirect to different windows in my application.
I am currently using the postbackurl property, On the click of the button i need it to open a new window with the url.

Is there a way i can do this?

Thanks in advance

ToolBar

answered on 20 May 2011

5 answers

358 views

Telerik.Web.UI.WebResource.axd

I am getting this error related to WebResource.axd. This happens when I click a button and it opens up a document from sharepoint site.

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; SLCC1;
.NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.21022; .NET CLR 3.5.30729; InfoPath.3; .NET4.0C; .NET4.0E)
Timestamp: Fri, 3 Sep 2010 17:55:21 UTC

Message: Sys.WebForms.PageRequestManagerServerErrorException:
Retrieving the COM class factory for component with CLSID
{36D27C48-A1E8-11D3-BA55-00C04F72F325} failed due to the following error: 80040154.
Line: 6
Char: 62099
Code: 0
URI: http://sampledomainname/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_ScriptManager_TSM&compress
=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d3.5.0.0%2c+
Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3ad0c4ca6e-6b5d-49b6-922d-5244924fb100%3aea597d4b%3ab25378d2%3b
Telerik.Web.UI%2c+Version%3d2010.2.826.35%2c+Culture%3dneutral%2c+PublicKeyToken
%3d121fae78165ba3d4%3aen-US%3a86f56c91-febb-4172-ae71-6c2ba2372421%3a16e4e7cd%3a
ed16cbdc%3af7645509%3a24ee1bba%3a19620875%3a874f8ea2%3a490a9d4e%3a1e771326%3a4cacbc31%3ae330518b%3a8e6f0d33%3a6a6d718d%3a8674
cba1%3ab7778d6c%3ac08e9f8a%3aa51ee93e%3a59462f1%3a58366029%3aaa288e2d%3ac8618e41%3ae4f8f289

General Discussions

answered on 20 May 2011

1 answer

142 views

RadComboBox OnItemRequested

I am getting an error 'Cannot create an object of type 'Telerik.Web.UI.RadComboBoxItemsRequestedEventHandler' from its string representation 'rcbPersonGroupSelector_ItemsRequested' for the 'OnItemsRequested' property.' on the Rad combo box.

This is the code used :

<telerik:RadComboBox ID="rcbPersonGroupSelector" <br> runat="server" Height="190px" Width="420px" MarkFirstMatch="true" EnableLoadOnDemand="true"<br> HighlightTemplatedItems="true" OnItemDataBound="rcbPersonGroupSelector_ItemDataBound"<br> OnItemsRequested="rcbPersonGroupSelector_ItemsRequested" IsCodeSet="false" Title="Select"><br> <headertemplate><br> <ul><br> <li class="PersonSelector_col1">Name</li><br> <li class="PersonSelector_col2">AAA</li> <br> </ul><br> </headertemplate><br> <ItemTemplate><br> <ul><br> <li class="PersonSelector_col1"><br> <%#DataBinder.Eval(Container, "DataItem.Name") %> <br> <li class="PersonSelector_col2"><br> <%#DataBinder.Eval(Container, "DataItem.AAA") %> <br> </ul><br> <br> </ItemTemplate><br><span class="Apple-style-span" style="color: rgb(0, 17, 25); font-family: Consolas, 'Courier New', monospace; font-size: 13px; line-height: normal; "><span style="color: blue; "></</span><span style="color: maroon; ">telerik:RadComboBox</span><span style="color: blue; ">></span></span>

I have referenced telerik.web.ui and design dlls as suggested in one of the other threads, but still getting the same error.

Please help..

Thanks

Input

answered on 20 May 2011

10 answers

313 views

Rad Confirm Message

how i show the rad confirm messages in server side
please help me

Thanks,
Mohamed.

Grid

answered on 20 May 2011

1 answer

105 views

Prevent Detail table from expanding

I have a grid which uses grouping on the top-level table and also has a detail table. it seems that, when a group is collapsed, and then expanded, then the detail table is expanded for all items in the group. Is there a way to prevent the detail table from being expanded when the user expands a group? The detail table should only be expanded when the user clicks on the expand/collapse column for the item in the master table.

Grid

answered on 20 May 2011

1 answer

76 views

Export to Excel

Hi,

I have rad tool bar and i have a grid which is defined under radajax panel. I want to click button from tool bar and export Grid to excel. II followed instructions on Telerik site but nothing worked. Any idea ?

Regards,

Grid

answered on 20 May 2011

2 answers

531 views

GetDataKeyValue returning first Value in Grid

Hi,

I have a couple Grids on my page which include a "Download" GridButtonColumn that has AJAX disabled via Javascript to enable a File Download. When clicking these download buttons, the Code behind uses GetDataKeyValue to get the ID of the row:

protected void CompleteTickets_ItemCommand(object sender, GridCommandEventArgs e)

{

if (e.CommandName == "Refresh")

{

CompleteTicketsGrid.Rebind();

}

if (e.CommandName == "Download")

{

// Get Ticket ID

GridDataItem item = (GridDataItem)e.Item;

int ticketID = Convert.ToInt32(item.GetDataKeyValue("TicketID"));

// Use Ticket ID to Get File from File Repository

}

However, this code works for all of my other functions (edit), but on the "Download" button it automatically pulls the TicketID from the first Row of the Grid. It doesn't matter if I delete rows or change pages on the Grid, the GetDataKeyValue method always pulls the first item's ID rather than the row I've clicked.

I have DataKeyNames="TicketID" set in the MasterTableView of the Grid, and the Grid is populated with a LINQ/IQueryable Datasource.

I've also attempted to create a work-around for this problem by using this code instead, considering I have a column which displays the TicketID:

int ticketID = Convert.ToInt32(item["TicketID"].Text);

But to no avail, it is still grabbing the first Row's "TicketID". When constructing the GridDataItem item object, it's almost as if it's automatically grabbing the wrong Row from the very beginning. I've included an image of what exactly is happening.

Here is also the block of ASPX code of my Grid.

<telerik:RadGrid

runat="server"

ID="CompleteTicketsGrid"

Enabled="true"

Width="100%"

AutoGenerateColumns="false"

Skin="Default"

GroupingEnabled="false"

PageSize="10"

AllowPaging="true"

OnNeedDataSource="CompleteTickets_OnNeedDataSource"

OnItemCommand="CompleteTickets_ItemCommand">

<MasterTableView

DataKeyNames="TicketID"

CommandItemDisplay="Top"

CommandItemSettings-ShowRefreshButton="true"

CommandItemSettings-ShowAddNewRecordButton="false"

CommandItemStyle-HorizontalAlign="NotSet"

TableLayout="Fixed"

Name="Unpriced"

AllowPaging="true">

<Columns>

<telerik:GridBoundColumn UniqueName="TicketID" DataField="TicketID" HeaderStyle-Width="5%" ItemStyle-Width="5%" HeaderText="#"></telerik:GridBoundColumn>

<telerik:GridBoundColumn UniqueName="Customer" DataField="Customer" HeaderStyle-Width="15%" ItemStyle-Width="15%" HeaderText="Customer"></telerik:GridBoundColumn>

<telerik:GridBoundColumn UniqueName="Location" DataField="Location" HeaderStyle-Width="18%" ItemStyle-Width="18%" HeaderText="Location"></telerik:GridBoundColumn>

<telerik:GridBoundColumn UniqueName="JobNo" DataField="JobNo" HeaderStyle-Width="9%" ItemStyle-Width="9%" HeaderText="Job #"></telerik:GridBoundColumn>

<telerik:GridBoundColumn UniqueName="CreatedDate" DataField="DateCreated" HeaderStyle-Width="11%" ItemStyle-Width="11%" HeaderText="Date Created" ReadOnly="true" DataFormatString="{0:d/M/yyyy}"></telerik:GridBoundColumn>

<telerik:GridBoundColumn UniqueName="OrderedBy" DataField="OrderedBy" HeaderStyle-Width="11%" ItemStyle-Width="11%" HeaderText="Ordered By" ReadOnly="true"></telerik:GridBoundColumn>

<telerik:GridButtonColumn UniqueName="Download" ButtonType="LinkButton" Text="Download" CommandName="Download" ItemStyle-Width="12%" HeaderStyle-Width="12%"/>

<telerik:GridButtonColumn UniqueName="LoadTicket" ButtonType="LinkButton" Text="Load Ticket" CommandName="LoadTicket" ItemStyle-Width="13%" HeaderStyle-Width="13%"/>

</Columns>

</MasterTableView>

<ItemStyle Height="40" VerticalAlign="Middle"/>

<AlternatingItemStyle Height="40" BackColor="CadetBlue" ForeColor="White" VerticalAlign="Middle" />

<ClientSettings>

<ClientEvents OnCommand="OnGridCommand" />

<Scrolling AllowScroll="False" UseStaticHeaders="True" />

</ClientSettings>

</telerik:RadGrid>

Oh, and here's the JavaScript I'm using to Disable AJAX on the Download Button:

// Disables Ajax on Buttons Clicked in Grid

//

function OnGridCommand(sender, args) {

var itemArgument = args.get_commandArgument();

var itemCommand = args.get_commandName();

if (itemArgument == "DisableAjax" || itemCommand == "Download") {

window["disableAjax"] = true;

}

else {

window["disableAjax"] = false;

}

args.set_cancel(false);

}

Any ideas are greatly appreciated, as I've hit a brick wall with this one... Or maybe I've just got tunnel vision from staring at this for so long.

Best Regards,

Landon

Grid

answered on 20 May 2011

2 answers

216 views

Problem with centralized error handling, Application_Error

Hi,

We have done the following:
In Appliction_Error and in ScriptManager_AsyncPostBackError, we handle and logs the exception.
Then we redirect to an error page.

When not using radcompression, this works for all cases, but when using radcompression, the redirect doesn't happen when an exception occurs in Page_PreInit. The exception must also be in an Async callback, normal postbacks works as expected.

Default.aspx:

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="default.aspx.vb" Inherits="WebApplication8._default" %>

<!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">

<div>

<asp:ScriptManager ID="sm" runat="server"></asp:ScriptManager>

<asp:UpdatePanel ID="upError" runat="server" ChildrenAsTriggers="true" UpdateMode="Conditional">

<ContentTemplate>

<asp:Button ID="btnError" runat="server" Text="Error" />

</ContentTemplate>

</asp:UpdatePanel>

<asp:Button ID="btnErrorNoUpdatePanel" runat="server" Text="ErrorNoUpdatePanel" />

</div>

</form>

</body>

</html>

Default.aspx.vb:

Public Class _default

Inherits System.Web.UI.Page

Private Sub _default_PreInit(sender As Object, e As System.EventArgs) Handles Me.PreInit

If Me.IsPostBack Then

Throw New Exception("Test")

End If

End Sub

Private Sub sm_AsyncPostBackError(sender As Object, e As System.Web.UI.AsyncPostBackErrorEventArgs) Handles sm.AsyncPostBackError

Server.ClearError()

Response.Redirect("Error.aspx")

End Sub

End Class

Error.aspx:

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Error.aspx.vb" Inherits="WebApplication8._Error" %>

<!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">

<div>

An error occured!

</div>

</form>

</body>

</html>

web.config:

<?xml version="1.0"?>

<configuration>

<system.web>

<customErrors mode="Off"/>

<compilation debug="true" strict="false" explicit="true" targetFramework="4.0" />

<httpModules>

<add name="RadCompression" type="Telerik.Web.UI.RadCompression"/>

</httpModules>

</system.web>

<system.webServer>

<modules runAllManagedModulesForAllRequests="true">

<remove name="RadCompression" />

<add name="RadCompression" preCondition="managedHandler" type="Telerik.Web.UI.RadCompression"/>

</modules>

</system.webServer>

</configuration>

Global.asax.vb:

Imports System.Web.SessionState

Public Class Global_asax

Inherits System.Web.HttpApplication

Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs)

' Fires when an error occurs

Server.ClearError()

Response.Redirect("Error.aspx")

End Sub

End Class

When hitting the Error-button, I don't get to the error page, but when hitting the ErrorNoUpdatePanel I do get to the error page.
If turning off RadCompression both cases works.

Regards
Caesar

Compression

answered on 20 May 2011