WPF CheckBox两个状态只绑定 [英] WPF CheckBox two state only binding

问题描述

大家好

 < CheckBox     IsChecked   =  " {Binding Foo，TargetNullValue = False}"    内容  =  " ; Foo"     IsThreeState   =  错误  />  

我在WPF窗口中有几个CheckBoxes绑定到数据库。

我只需要两个状态，它可以使用这些属性。

我的问题：这两个状态是True / NULL，但我想拥有True /假。

因此，如果数据库中有NULL值，我需要在不触及CheckBox的情况下保存False。

感谢您的帮助

Mirek

解决方案

Hi Mirek Kn ápek，

请告诉我你如何定义你的"Foo"财产？你从数据库中获得的真正价值是什么？ "True"是否为"True"字符串值？ "NULL"是"NULL"字符串值还是c＃空值？
 

最好的问候，

Xavier Xie

Hello to all

<CheckBox IsChecked="{Binding Foo, TargetNullValue=False}" Content="Foo" IsThreeState=False/>

I have couple CheckBoxes with binding to database in WPF window.

I need two state only, which works with these attributes.
My problem: These two states are True/NULL, but I would like to have True/False.
So if there is NULL value in database, I need to save False without touching CheckBox.

Thanks for your help

Mirek

解决方案

Hi Mirek Knápek,

Please show me that how you define your "Foo" property? And what’s the real type of your value from database? Was the "True" a "True" string value? Was the "NULL" a "NULL" string value or c# null value?  

Best Regards,

Xavier Xie

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