Binding between the two columns in the DataGrid

I have a DataGrid which is binded to a list with two properties.

First column in the DataGrid i开发者_StackOverflow中文版s DataGridTemplateColumn and it has ComboBox inside.

Second column in the DataGrid is DataGridTextColumn and it is binded with a converter.

Whenever i change the combobox value in the first column, the second column converter must be triggered. So based on some calculation in the converter i can return the value to second column

how to do this?

You can route that through your bound source, bind the selected item of combobox to your bound data and then bind the selected object to column 2 using converter. Share the selecteditem between two columns and for the second column use the converter in binding, so it gets triggered.

Corrected copy paste error in column 2 binding,

Something like this,

Presenter / ViewModel
class DataSource : INotifyPropertyChanged {
  // raise PropertyChanged when required
  public ObservableCollection<string> Columns1Values {get;set;}
  // raise PropertyChanged when required
  public string SelectedColumn1Value {get; set;}
}

View

<dg:DataGrid
    Name="sampleDG"
    ItemsSource={Binding DataSourceObject}>
    <dg:DataGridWidget.Columns>
        <dg:DataGridTemplateColumn
            Header="Column 1">
            <datagrid:DataGridTemplateColumn.CellTemplate>
                <DataTemplate>
                    <Label Content="{Binding Path=SelectedColumn1Value, Mode=TwoWay}"/>
                </DataTemplate>
            </datagrid:DataGridTemplateColumn.CellTemplate>
            <datagrid:DataGridTemplateColumn.CellEditingTemplate>
                <DataTemplate>
                    <ComboBox
                        ItemsSource="{Binding Path=Column1, Mode=TwoWay}"
                        SelectedItem="{Binding Path=SelectedColumn1Value, Mode=TwoWay}"
                    />
                </DataTemplate>
            </datagrid:DataGridTemplateColumn.CellEditingTemplate>
        </dg:DataGridTemplateColumn>
        <dg:DataGridTextColumn 
            Header="Column 2"
            Binding="{Binding Path=SelectedColumn1Value, Converter={StaticResource selectedConverter}, Mode=TwoWay}}">
        </dg:DataGridTextColumn>
    </dg:DataGridWidget.Columns>
</dg:DataGrid>