wpf bind checkbox 명령 내 DataGridTemplateColumn.CellTemplate

Question

다른 변형으로 여러 번 요청되었지만 작동하지 못합니다. (A datagridTemplateColumn.cellTemplate에서) 체크 박스가

<DataGrid ItemsSource="{Binding TransactionTypes}" AutoGenerateColumns="False" CanUserAddRows="False" x:Name="TransTypesGrid"> 
<DataGrid.Columns> 
    <DataGridTemplateColumn> 
     <DataGridTemplateColumn.CellTemplate> 
      <DataTemplate> 
       <CheckBox IsChecked="{Binding IsSelected, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" 
          Command="{Binding DataContext.UpdateCommand, ElementName=TransTypesGrid}" /> 
      </DataTemplate> 
     </DataGridTemplateColumn.CellTemplate> 
    </DataGridTemplateColumn> 
    <DataGridTextColumn Header="Transaction Type" Binding="{Binding TransTypeDesc}" /> 
</DataGrid.Columns> 

내 뷰 모델

public DelegateCommand UpdateCommand { get; set; } 

public myConstructor() 
{  
    this.UpdateCommand = new DelegateCommand(Update); 
} 

private void Update() 
{ 
    //this stuff works, it's just not getting called when a checkbox get's (un)checked 
    //stuff that goes though the DataGrid's item source's IsSelected property 
} 

을 내보기를 클릭 할 때 내 뷰 모델에서 호출하는 방법을 얻으려고

Answer 1

명령 바인딩에 Self 바인딩을 사용해야합니다.

<DataTemplate> 
    <CheckBox IsChecked="{Binding IsSelected, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" 
     Command="{Binding DataContext.UpdateCommand,RelativeSource={RelativeSource Mode=Self}}" /> 
</DataTemplate> 

Answer 2

이 코드는 모델 및 명령에서 IsSelected가 ViewModel에서 작동하는 경우 작동합니다.

<CheckBox IsChecked="{Binding IsSelected, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" 
Command="{Binding 
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, 
Path=DataContext.UpdateCommand}"/>