Keyboard Support
    RadMultiSelect provides with built-in keyboard support and can be used as soon the control gets focused. You can focus it by iterating through the Page controls using the Tab key, alternatively, you can use a shortcut if you set the AccessKey property.
    
        <telerik:RadMultiSelect runat="server" ID="RadMultiSelect1" AccessKey="w"></telerik:RadMultiSelect>
     
    
        - Under IE and Chrome use alt + AccessKey
- Under Firefox use Shift + Alt + AccessKey
KEYBOARD LEGEND
    Focus
    
    Closed popup:
    
        - 
            left arrow
            
                highlights previous selected item
            
        
- 
            right arrow
            
                highlights next selected item
            
        
- 
            home
            
                highlights first selected item
            
        
- 
            end
            
                highlights last selected item
            
        
- 
            delete
            
                deletes highlighted item
            
        
- 
            backspace
            
                deletes previous selected item
            
        
- 
            down arrow
            
                opens the popup
            
        
- 
            esc
            
                clears all items
            
        
Opened popup:
    
        - 
            up arrow
            
                highlights previous item
            
        
- 
            shift + up arrow
            
                selects previous item
            
        
- 
            down arrow
            
                highlights next item
            
        
- 
            shift + down arrow
            
                selects next item
            
        
- 
            home
            
                highlights first item in the popup
            
        
- 
            ctrl + shift + home
            
                selects items to the beginning
            
        
- 
            end
            
                highlights last item in the popup
            
        
- 
            page up
            
                scrolls the popup up
            
        
- 
            page down
            
                scrolls the popup down
            
        
- 
            ctrl + shift + end
            
                selects items to the end
            
        
- 
            enter
            
                selects highlighted item
            
        
- 
            ctrl + space
            
                selects highlighted item
            
        
- 
            ctrl + a
            
                selects all items
            
        
- 
            esc
            
                closes the popup
            
        
- 
            up arrow
            
                closes the popup if the first item is highlighted
            
        
- 
            esc
            
                closes the popup