DropDownList - OnChange Event

[Jigar]

Hi There,

I recently observed that When I populate DropDownList with List, it doen't fire Onchange event. But If I bind it with Id and value list it does fire the event.

For Ex.

List Binding

Dim myList as List(Of String)

myList.Add("One")

myList.Add("Two")

myList.Add("Three")

Return New JsonResult With {.Data = New SelectList(myList)}

In above case, Event won't be fired.

With Id and Value Binding.

Dim myList As New List(Of Object)

myList.Add(New With{.id=1, .name="One"})

myList.Add(New With{.id=2, .name="Two"})

myList.Add(New With{.id=3, .name="Three"})

Return New JsonResult With {.Data = New SelectList(myList, "id", "name")}

In above case, Event gets fired.

why event is not being fired when i return list??

Thanks,

Jigar.

[Georgi Krustev]

Hello Jigar,

This is a known issue, which is already fixed. Currently if you bind DropDownList / ComboBox to collection of SelectListItem / DropDownItem object, without setting Value property, compontent will not raise OnChange event. I will suggest you set Value property in order to avoid this erroneous behavior.
As I said, this problem is already fixed and the fix will be included in the next official release of the Telerik Components for ASP.NET MVC.

Greetings,
Georgi Krustev
the Telerik team

[Jigar]

Hi Georgi

thanks a lot for you reply.

Regards,

Jigar.