RadioButton: can't set blank ("") value

[victoryismine06]

I can't seem to find a way to make a null option for Radio Buttons when trying to bind the control to a string type. It either sends 'null' as a string or 'on' if I completely remove the value.

Example:

<label>Gender</label>    
                    
<input name="Gender" dojotype="dijit.form.RadioButton" type="radio" value="M" />
<label>Male</label>  
                      
<input name="Gender" dojotype="dijit.form.RadioButton" type="radio" value="F" />
<label>Female</label>      
                  
<input name="Gender" type="radio" dojotype="dijit.form.RadioButton" checked="checked" value="" />
<label>Both</label>

I'm using MVC 3, when I look at the data posting to the controller, I either see "on" or "null" as string values. I also tried value="@String.Empty" to no avail...

This works fine with just HTML without Dojo so I'm assuming its a feature or bug in the control.

[Douglas Hays]

In [28199]:

Fixes #15037. Change RadioButton? to allow value="" while CheckBox? still changes blank to on.

[bill]

Just updating the summary, "" is not the same thing as null.