我有属性翻番？ MyDouble {得到..设置...} 。 我在DataGridTextColumn绑定的：

I have property double? MyDouble { get .. set ... }. I've binded it in DataGridTextColumn:

<DataGridTextColumn Binding="{Binding MyDouble}" />

它工作正常，除非我添加UpdateSourceTrigger =的PropertyChanged。

It works fine unless I add UpdateSourceTrigger=PropertyChanged.

<DataGridTextColumn Binding="{Binding MyDouble, 
                              UpdateSourceTrigger=PropertyChanged}" />

在这种情况下，我不能进入。并添加双的价值。我怎样才能避免这种情况？

In this case I can't enter "." and add "double" value. How can I avoid this behavior?

推荐答案

卸载.NET 4.5 Beta版。我已为这个错误给 Microsoft支持。

Uninstall .NET 4.5 Beta. I've posted this bug to Microsoft support.