telerik

Good book about Telerik ASP.NET controls?

Is there a good book that explains Telerik ASP.NET controls? ...

What is tab #13119 on my VS 2008 toolbox?

I only noticed this last night, as I have not used the toolbox on this particular project for some time. Suddenly, all my Telerik controls, previously on their own tab, were missing, and this mysterious, empty tab #13119 was there. I added a new tab for Telerik and added all the controls, but the Telerik tab remained invisible, althoug...

Telerik RadWindow without NavigateURL?

I want a modal popup effect to display dynamic content on a single page. I'm working with Telerik controls. Telerik has a control called RadWindow which is more or less a modal window. It looks like the only content that is to be displayed in RadWindow is the content of a page that is specified in NavigateURL. That is a problem for m...

Select a RadGrid Row (Client-side) inside RadWindows

Hello! I have a RadGrid inside of RadWindow... I need to select a Radgrid row in clientside... How can I do that? I´m trying to get the radgrid like that: var masterTable = $find("<%=radgridID.ClientID%>").get_masterTableView(); but always getting null... Any help? ...

Telerik - placing javascript file includes at the bottom of the page.

It is recommended that js files be included on the bottom of the page. I'm using Telerik Rad Ajax controls that emit js includes on top of the page. Is there a way to force it to emit js includes at the bottom of the page? ...

ASP.NET AJAX - updates in panel resend all page validation script

I am using a RadGrid from Telerik with Ajax enabled. Whenever an Ajax call happens, the page responds with 56 KB of JavaScript validators in addition to the new grid data (in addition to 40k of viewstate - argh). Is there any workaround for this? ...

Adding GridDropdownColumn to Radgrid detail table

I am binding a detail table in DetailTableDataBind event of a Radgrid. The event handler contains code to bind it to a linqdatasource. This adds a bunch of GridBoundColumns to the detail table. However i want some of these to be GridDropdownColumns. How do i go about that ...

Telerik RadGrid - How to disable sorting for a Column?

In their documentation Telerik says that there is a way to disable sorting for specific column by using AllowSorting property. I'm looking at Telerik.Web.UI.GridColumn members and there is no AllowSorting property. There is a Sortable property but its protected and has to be overriden. So what do I use to turn off sorting for specific...

How to use interfaces with Telerik OpenAccess

Hi there, I am trying to implement my persitent classes using interfaces. I have created the following public interface IFoo { int Id {get;set;} } public class Foo : IFoo { private int _id; public int Id {get{return _id;} set{_id = value;}} } public interface IBar { int Id {get;set;} IFoo Foo {get;set;} } public...

Telerik RadChart and Ektron CMS 7.6 dll conflict

I have Ektron CMS 7.6 which includes a plethora of built in features. One of those features is Telerik for ASP.NET Ajax Controls. Also I have a subscription for Telerik Controls separately. Problem is Telerik was forced to break some backwards compatiblity for the Radchart involving Telerik.Charting.dll and RadChart.Net2.dll. basical...

Telerik RadDock - ajax update returns a JSON error.

Trying to update RadDock (open/close it) by putting it in UpdatePanel however no luck....I'm getting the following response. 189|error|500|Invalid JSON primitive: {"Top":179,"Left":583,"DockZoneID":"","Collapsed":false,"Pinned" :false,"Resizable":false,"Closed":false,"Width":"300px","Height":null,"ExpandedHeight":0,"Index":-1} .| He...

Anyone have issues with using a RadTextBox in a MultiView?

I am want to use a Telerik RadTextBox inside a MultiView in ASP.NET 2.0. Just dragging a RadTextBox into a view and running the page generates a run-time error of the good old favorite "Object reference nto set to an instance of an object". It seems to be breaking on the Telerik.WebControls.RadInputControl.SaveViewState() call. Has an...

Telerik OpenAccess and multiple conditions in the where clause

Hi there, I have just written a few unit tests and to my horror it failed. Here is my test... [TestMethod] public void FetchWithMoreThanOneConditionUsingKnownTypes() { using (var scope = EntityObjectScopeProvider.GetNewObjectScope()) { var temp = new TempClient() { FirstName = "Rohan", Surname = "West" }; var entity = sc...

Treeview with loading on demand large number of nodes on one level

I'm in a situation where I need to display a tree. However some of the nodes have 35000 child nodes (direct childs!). This of course is way to slow in terms of usability. I'd rather see that the tree loads only those nodes that are visible in the browser viewport. Such trees exist for WinForms and C++, does any of you know if such a ...

Telerik RadScriptManager - error while combining js files

I'm trying to combine multiple js file references using Telerik's script manager. Here is the code I have on page load: System.Web.UI.ScriptReference jsFile1 = new System.Web.UI.ScriptReference('/virtual_folder/jsfile1.js'); System.Web.UI.ScriptReference jsFile2 = new System.Web.UI.ScriptReference('/virtual_folder/jsfil...

Telerik RadGrid Cast exception when populated with an array of objects by their parent type

I have just come across a Casting Exception while using the Telerik RadGrid. It occurs during the DataBind event if I have an array of objects as the datasource radgrid1.DataSource = new BaseObject[] { new ChildObject1(), new ChildObject2() }; where the classes ChildObject1 and ChildObject2 both inherit from the class BaseObject. ...

Telerik FileExplorer Example

I've been wrangling with creating my own File Browser Content Provider for Telerik's FileExplorer control. They have one example on their website, but it hasn't helped my solve some ASP.NET Page and UserControl life-cycle issues I've been having. Is there better example out there of using the FileExplorer control with a custom Content P...

Is intellisense not working properly in VS 2008?

I've got trouble getting Intellisense to work in ASP.NET source view. For example, I register the Telerik RadControls DLL with a tag prefix, as it says in the samples: <%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %> But when typing <telerik: no intellisense appears. Also, after adding a coupl...

Add Items to Telerik Ajax RadComboBox after populated from webservice

I'm using the latest 2009 RadCombobox Ajax control and I'm using the build in functionality to populate it from a webservice. I would also like to push one more item to the box so the user has the choice of not choosing anything. Essentially making the control optional. Right now if they choose something and then change their mind, th...

performance issues when using 3rd party ASP.Net packages on external-facing sites

I'm an experienced C# winforms person, but new to ASP.Net. I'm developing a site which will be externally facing, but will not have massive numbers of users (wouldn't expect more than maybe 50 at a time). The users of the site would probably be very smart, but not necessarily tech savvy (psychologists). Because I'm new to web developm...