Check out the code library which demonstrates how to implement a RadComboBox supporting multi-selection with checkboxes. Here checkboxes are placed in Item Template of RadComboBox. RadComboBox Advanced Multiple Selection
I am getting the following errors while trying to test the sample
Error 4 '_Default' does not contain a definition for 'RadComboBox1' and no extension method 'RadComboBox1' accepting a first argument of type '_Default' could be found (are you missing a using directive or an assembly reference?) D:\_LearningProjects\TelerikTest\TelerikTest\Default.aspx.cs 20 18 TelerikTest
Error 5 '_Default' does not contain a definition for 'Label1' and no extension method 'Label1' accepting a first argument of type '_Default' could be found (are you missing a using directive or an assembly reference?) D:\_LearningProjects\TelerikTest\TelerikTest\Default.aspx.cs 26 14 TelerikTest
I am simply trying test the sample you mentioned. I tried adding
using
Telerik.Web.UI; to the default.aspx.cs and that did not help.
ther than this, It gave me an error that it couldn't find "Telerik.Charting.Dll"..I removed that reference from the web.connfig
Also notice that in your sample project, you have two zip files one with Telerik.Web.UI.Dll and other with RadComboBox.Net2.dll. I am not sure which one to use? I tried adding reference to both DLL's but nothing worked.