Question

I have a data grid which is bounded to a simple List.
now i want to add a checkbox column to it that when iterating threw the items of the grid i will be able to add to another list only the rows where the chckbox is selected.

is it possible?

many thanks

Answer 1

You sure can. First I would recommend that your List be an ObservableCollection so that the DataGrid stays bound.

First Create the DataGrid in XAML

<DataGrid Name="SampleDataGrid" AutoGenerateColumns="False" ItemsSource="{Binding Path=SampleObservableCollection}">
<DataGrid.Columns>
    <DataGridTextColumn Header="SampleOne" Binding="{Binding Path=SampleOne}"/>
    <DataGridTextColumn Header="SampleTwo" Binding="{Binding Path=SampleTwo}"/>
    <DataGridTemplateColumn Header="SampleThreeCheckBox">
        <DataGridTemplateColumn.CellTemplate>
            <DataTemplate>
                <CheckBox IsChecked="{Binding Path=SampleThreeCheckBox, UpdateSourceTrigger=PropertyChanged}">
            </DataTemplate>
        </DataGridTemplateColumn.CellTemplate>
    </DataGridTemplateColumn>
</DataGrid.Columns>

(SampleOne, SapleTwo, and SampleThreeCheckBox are all properties in your object that’s in your list.)

Second update your Code-Behind

Set the DataContext to this or your ViewModel

DataContext = this; // Better if you use a ViewModel

Then create a new list with only the check ones and set that to your ItemSource of the new DataGrid.