Error Checkbox in radGridView

[kenny]

I add column checkbox in radGridView. When I check it error " Specified cast is not valid "

Code:
if (this.radGridView1.ActiveEditor is RadCheckBoxEditor)
{
        bool value = (bool)this.radGridView1.ActiveEditor.Value;
}

Help Me. Thank You.

[Svett]

Hi kenny,

The exception is thrown because you have tried to cast the RadCheckBoxEditor's value to a bool type. The editor value is from type ToggleState, because of its tree state feature. Hence, you need to cast it to ToggleState type:
 

RadCheckBoxEditor checkBox = this.radGridView2.ActiveEditor as RadCheckBoxEditor;
if (checkBox != null)
{
    Telerik.WinControls.Enumerations.ToggleState state = (Telerik.WinControls.Enumerations.ToggleState)checkBox.Value;
    bool isTrue = state == Telerik.WinControls.Enumerations.ToggleState.On;
}

Sincerely yours,
Svett
the Telerik team