Hi,

I have a DropDownList which is populated with many items (around 15000). I know this is a lot, but it is needed for this application.

Unfortunately, the DropDownList does not open anymore, when there are that many items. The open Animation is shown but the Dropdown is closed immediately. I'm using the Version 2012.3.1114.

Is there a fix to this?

Greets

Hello David,

I guess that you are getting an exception about the length of the data serialized as JSON, saying that it exceeds the default MaxJsonLength. You could see the FAQ Section of the documentation about troubleshooting in such cases. I am attaching a sample application, showing a dropdown list with 20000 items. Please check if this works in your scenario.

Greetings,
Dimiter Madjarov
the Telerik team