My Label.Content in WPF doesn\'t display the first occurrence of \"_\" character. Why?
In WPF there is an attribute called RecognizesAccessKey, try to change it to false. If you use RadioButton be aware that there is also label behind, and in the RadioButton template to disable access key recognition you must set RecognizesAccessKey="False" on template ContentPresenter. Then this is disabled, or label is replaced with something else I don't remember now.