here is my code:
xaml side:
I use a data template to bind with item "dataType1"
<DataTemplate DataType="{x:Type dataType1}">
<WrapPanel>
<CheckBox IsChecked="{Binding Path=IsChecked, Mode=TwoWay}" Command="{Binding Path=CheckedCommand} />
<TextBlock Text="{Binding Path=ItemName, Mode=OneWay}" />
</WrapPanel>
</DataTemplate>
then I create a ComboBox with item with type "dataType1"
<ComboBox Name="comboBoxItems" ItemsSource="{Binding Path=DataItems, Mode=TwoWay}">
and here is dataType1 difinition:
class dataType1{public string ItemName{get; set;} public bool IsChecked {get; set;}}
the scenario is I prepare a list of dataType1 and bind it to the ComboBox, ItemName display flawlessly while CheckBox IsChecked value is always unchecked regardless the value of "IsChecked" in dataType1.
Is special handling needed in binding IsChecked property in CheckBox in wpf?
Peter Leung
Best Answer
The problem you're having here is that the
CheckBox
doesn't know when the value ofdataType1.IsChecked
changes. To fix that, change your dataType1 to:So now, when the property value is changed it will notify the binding that it needs to update by raising the
PropertyChanged
event.Also, there are easier ways to do this that avoid you having to write as much boiler-plate code. I use BindableObject from Josh Smith.