Questions on UI for ASP.NET AJAX Forum

32 answers

385 views

Sub Menu

Hi

http://demos.telerik.com/aspnet-ajax/menu/examples/functionality/templates/defaultcs.aspx for this demo is possible for sub menu ? Can you give some example ?

Menu

answered on 17 Mar 2016

7 answers

1.9K+ views

RadAjaxPanel and "The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>). "

This problem vexxed me for a short while, because the message returned is pretty generic and the stack trace didn't really hep me pinpoint the issue.

I eventually isolated this (I thought) to a RadAjaxPanel control I had declared:

<telerik:RadAjaxPanel ID="radPanel" runat="server" HorizontalAlign="NotSet"

LoadingPanelID="radLoadingPanel">

<asp:DropDownList ID="ddlTierID" runat="server" DataSourceID="BusinessUnitTypesDataSource"

DataTextField="Name" DataValueField="RowID" TabIndex="7">

</asp:DropDownList>

</telerik:RadAjaxPanel>

If I replaced this code block with the Microsoft flavor (which is what I'd tried to convert over to Telerik) like this:

<asp:UpdatePanel UpdateMode="Conditional" runat="server">

<Triggers>

<asp:AsyncPostBackTrigger ControlID="ddlUserRole" EventName="SelectedIndexChanged" />

</Triggers>

<ContentTemplate>

<asp:DropDownList ID="ddlTierID" runat="server" DataSourceID="BusinessUnitTypesDataSource"

DataTextField="Name" DataValueField="RowID" TabIndex="7">

</asp:DropDownList>

</ContentTemplate>

</asp:UpdatePanel>

then the page runs fine. However, I didn't understand why the Telerik panel should cause an issue, until I found this article:

http://www.telerik.com/help/aspnet-ajax/troubleshooting.html

At the top of the page containing the panel, I had this seemingly innocuous JavaScript snippet that simply set the focus to the first field on the form:

<script type="text/javascript">

function pageLoad()

{

$get('<%=txtUserName.ClientID %>').focus();

}

</script>

Based on the Telerik article, above, I wrapped this snippet in a RadCodeBlock and then the RadAjaxPanel code worked fine!

Hope this helps someone else!

Jon

Ajax

answered on 17 Mar 2016

2 answers

828 views

DropdownList background color change upon mouse over

Hello Everyone,

Can anyone suggest how to highlight the dropdown options upon mouse over. By default, I see a grey color highlighted when I hover on any of the options in the Dropdownlist. Please refer to the screenshot attached.

I would like to change the default color (grey) and give some brighter color for more visibility.

Here are the additional details

ASP.NET version - Visual Studio 2013 Version 12.0
OS - Windows 8
exact browser version - IE >= 10
exact version of the Telerik product = 2009.1.527.35
preferred programming language = C#

Thanks in Advance!!

Kumar

DropDownList

answered on 17 Mar 2016

5 answers

99 views

Combobox failing to load treeview view data inside it - Safari

Browser - safari version: 9.0.2 (11601.3.9)
Operation System os version: OS X EI Captain version 10.11.2

I have a combobox, which uses treeview to show the data.
When I click on combo box I get the following error

Failed to load resource: Could not connect to the server.
_initRightToLeftScriptResource.axd:8396TypeError: null is not an object (evaluating 'c.set_additionalQueryString')
_initRightToLeftScriptResource.axd:8395
initializeScriptResource.axd:8332
endUpdateTelerik.Web.UI.WebResource.axd:2:49050
endCreateComponentsTelerik.Web.UI.WebResource.axd:2:63458
_raiseInitTelerik.Web.UI.WebResource.axd:2:65559
_doInitializeTelerik.Web.UI.WebResource.axd:2:63974
(anonymous function)Telerik.Web.UI.WebResource.axd:2:65784
(anonymous function)Telerik.Web.UI.WebResource.axd:2:50713
pTelerik.Web.UI.WebResource.axd:2:558
_2PassTelerik.Web.UI.WebResource.axd:2:50697
FTelerik.Web.UI.WebResource.axd:2:1539
dTelerik.Web.UI.WebResource.axd:2:1898
cTelerik.Web.UI.WebResource.axd:2:1294
http://server/Ticketing/jquery.min .map Failed to load resource: the server responded with a status of 404 (Not Found)

ComboBox

answered on 17 Mar 2016

2 answers

306 views

grid header font color on sortable column

hi

I am applying a background color to all grid using this;

</script>

The header background color work fine but the font color on some columns don't seems to apply. I realised that it is because the column is sortable and the color won't change to white. How should make the sortable header font color to white? Thanks

Grid

answered on 17 Mar 2016

3 answers

96 views

optgroup dropdown shown with say 5 rows

does the RadComboBox support a view of 5 rows but have single select and option grouping?
or does any other control do that?

ComboBox

answered on 17 Mar 2016

11 answers

375 views

Controls loosing their style/skin on AJAX postback

Hi,

I have been working with the RAD AJAX tools for a while and I have noticed on some pages that controls change in appearance when the page does an AJAX postback. It is usually an unlrelated part of the page from that which is posting back.

If I had to take a stab at what is happening, I would guess that the AJAX postback was causing other Rad Controls to loose their styling.

Can anyone point me in the right direction here?

Ajax

answered on 17 Mar 2016

3 answers

97 views

How to change radtab style on failed validation

Hello

I have radtabstrip that loads usercontrols in dynamic radpageviews. Each user control has different validation groups. On validation failure i need to indicate user to go ahead and fix validation errors on other tab in wizard.
For e.g. if user goes from tab A to tab C and save it i need to display validation error on tab B. For that i need to either add Red Exclamation Mark or change the font of tab to red or tab the entire tab color to red.

Any idea how do i do that? I am using custom skins.

Regards
Mac

TabStrip

answered on 17 Mar 2016

1 answer

197 views

Raddropdowntree selectedIndex property on serverside.

1. SelectedIndex property not available in raddropdowntree
2. Can not loop on all items in raddropdowntree
3. Not able to set node as selected by selectedindex
4. Is any alternative solutions for above problems

DropDownTree

answered on 17 Mar 2016

2 answers

176 views

RadComboBox with Required Field Validator - IE issues when clearing with X

Hello,

I have a RadComboBox with an associated required field validator. On Internet Explorer 11 (maybe other versions) an X appears that allows the user to clear the Combo. Please see the attached image if you don't know what I mean.

If the user clears the selection with the X and then clicks elsewhere (on another control for example) then the required field validator for the RadComboBox will activate. I only want this validator (and the other validators) to fire when the page is posted back.

There are a couple of the approaches that I have investigated but couldn't make get to work 100% correctly for various reasons are

1. Disable the validator temporarily with Javascript and re-enable later on. As per this thread Radcombobox clearSelection causes validation.
2. Use a custom validator.

The second one isn't really an option because the RadComboBox is used in an .ascx file that is re-used in a lot of places. Also, some attributes that are specific to a RequiredFieldValidator are required.

So, I am asking if there is a simple low impact way of preventing the validator from firing in this scenario?

Thanks in advance,
John.

ComboBox

answered on 17 Mar 2016