Building a RadDatePicker custom column editor for RadGrid

Requirements
r.a.d.grid	3.2
r.a.d.calendar	1.6
.NET version	1.x
Visual Studio version	2003
programming language	VB
browser support	all browsers supported by r.a.d.grid and r.a.d.calendar

 
The RadGrid control supports building your own custom column editors.  These are ideal if you want to customize your users' editing experience.

A custom column editor has to inherit from one of the base editor classes, our example will inherit from GridTextColumnEditor.  The two most important methods that have to be overriden are AddControlsToContainer and LoadControlsFromContainer.  The former has to create the editor's controls and add them to the container's controls collection.  The latter extracts information from the container's controls:

Protected Overrides Sub AddControlsToContainer()
    picker = New RadDatePicker
    picker.ID = "editPicker"
    ContainerControl.Controls.Add(picker)
End Sub

Protected Overrides Sub LoadControlsFromContainer()
    picker = ContainerControl.Controls(0)
End Sub

The tricky part is to remember to set an ID to all controls that you create.  This is generally a good ASP.NET programming practice and can save you a lot of hunting for postback events not being fired and viewstate not being loaded.
 

It works! I met another issue: the date will automatically set as 1/1/1980 if user leave the datepicker blank. How can I make the date = null in this case?

Hi Richard,

We have attached the sample application we sent you in the support ticket you opened on the same topic.

I hope it will serve as a future reference for other telerik clients too.


Best wishes,
Manuel

the telerik team

Hi!

is there a Demo-Project for c# also?

Thank you!

Hi Ningo,

We have attached a C# project that achieves the same functioanlity (also attached is a calendar hotfix build that fixes some apperance issues with datepickers within grid edit item templates).

Hope this helps.


Kind regards,
Manuel
the Telerik team

Thank you!

Just for your Information:

If i try to run the Demo Code i get the errormessage

System.InvalidOperationException: This control is compiled for ASP.NET 1.x. Please use the ASP.NET 2.0 native version: RadGrid.Net2.dll



Ningo

Hi Ningo,

The attached project is a C# project for .Net 1.x as the original project was for that framework version and you have not indicated a preferred .Net version. However, there is nothing specific to .Net1.x here so you should be able to easily convert the project to a .Net2.0 website.

Let us know if you have any problems.


All the best,
Manuel
the Telerik team

Hi, I am using RadUpload version 2.3.2 in VS 2003.  My site works fine when I set the .NET CLR version in IIS to 1.1.  It breaks, however, with the following error message, when I set the CLR version to 2.0.

"This control is complied for ASP.NET 1.x. Please use the ASP.NET 2.0 native version"

I need to use 2.0 framework, and I saw that someone else had run into the same problem.  What is the solution to this problem?

Thank you in advance.

Stack trace:

[InvalidOperationException: This control is complied for ASP.NET 1.x. Please use the ASP.NET 2.0 native version: RadUpload.Net2.dll]
   Telerik.RadUploadUtils.RadControl.OnInit(EventArgs e) +101
   Telerik.WebControls.RadUpload.OnInit(EventArgs e) +10
   System.Web.UI.Control.InitRecursive(Control namingContainer) +321
   System.Web.UI.Control.InitRecursive(Control namingContainer) +198
   System.Web.UI.Control.InitRecursive(Control namingContainer) +198
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +834

Hi Matthew,

You can use RadUpload.Net2.dll for .NET 2.0.

Greetings,
Vlad
the Telerik team