[英]WPF Bind checkbox to bool?
I have a WPF checkbox binded to ViewModel nullable boolean property. 我有一个绑定到ViewModel可以为空的布尔属性的WPF复选框。 I am setting this property to false or true in Constructor, to avoid Interminent state but no matter what I do the Initial state of checkbox stays grayed.
我在构造函数中将此属性设置为false或true,以避免Interminent状态,但无论我做什么,复选框的初始状态保持灰色。 The binding working just fine since once I change the state by clicking the checkbox on UI I am getting controls values (true/false).
绑定工作正常,因为一旦我通过单击UI上的复选框更改状态,我将获得控件值(true / false)。 Any Ideas?
有任何想法吗?
XAML: XAML:
<CheckBox Margin="0,4,0,3"
VerticalAlignment="Center"
Content="Mutual"
IsChecked="{Binding MutualChb}" />
ViewModel: 视图模型:
public ContstrutorViewModel()
{
MutualChb = true;
}
private bool? _mutualChb;
public bool? MutualChb
{
get { return _mutualChb; }
set
{
_mutualChb = value;
_mutualChb = ( _mutualChb != null ) ? value : false;
OnPropertyChanged("MutualChb");
}
}
The reason for that is because it's initially null. 原因是因为它最初为空。
private bool? _mutualChb;
public bool? MutualChb
{
get { return (_mutualChb != null ) ? _mutualChb : false; }
set
{
_mutualChb = value;
OnPropertyChanged("MutualChb");
}
}
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