CODEWITHSUNDEEP
c#wpfxamldata-bindingdatagrid
4est
4est

Reputation: 3168

Binding DataGrid wth ComboBox (PropertyChanged, WPF, Binding)

On UserControl into xmal have ComboBox filled "Id" items:

<ComboBox x:Name="cmbId" DisplayMemberPath="Id"/>

cs:

cmbId.ItemsSource = (from q in mydata.test_views
                     select q).ToList();

I'm trying to fill data into DataGrid:

 <DataGrid x:Name="UGrid" AutoGenerateColumns="False">
            <DataGrid.Columns>
                <DataGridTextColumn Header="Auto Name" Binding="{Binding SelectedItem.AutoName, UpdateSourceTrigger=PropertyChanged, ElementName=cmbId}" Width="100"/>
                <DataGridTextColumn Header="Color" Binding="{Binding SelectedItem.Color, UpdateSourceTrigger=PropertyChanged, ElementName=cmbId}" Width="100"/>
            </DataGrid.Columns>
 </DataGrid>

How to display data "Auto Name & Color" value after user select item on ComboBox?

Upvotes: 0

Views: 165

Answers (2)

Krom
Krom

Reputation: 98

You need to add an event in combobox: 

> <ComboBox x:Name="cmbId" DisplayMemberPath="Id"
> SelectionChanged="selectionInComboboxChanged"/>

And in the selectionInComboboxChanged you can get the selected cobobox item and then add it to the mydata.test_views list.

Upvotes: 0

mm8
mm8

Reputation: 169240

The ItemsSource of a DataGrid is supposed to be set to an IEnumerable<T>. If you only want to display a single item in the DataGrid, you could handle the SelectionChanged event for the ComboBox and set the ItemsSource property of the DataGrid to a List<T> that contains the selected item in the ComboBox:

private void cmbId_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    UGrid.ItemsSource = new List<YourEntityType> { cmbId.SelectedItem as YourEntityType };
}

<DataGrid x:Name="UGrid" AutoGenerateColumns="False">
    <DataGrid.Columns>
        <DataGridTextColumn Header="Auto Name" Binding="{Binding AutoName, UpdateSourceTrigger=PropertyChanged}" Width="100"/>
        <DataGridTextColumn Header="Color" Binding="{Binding Color, UpdateSourceTrigger=PropertyChanged}" Width="100"/>
    </DataGrid.Columns>
</DataGrid>

Upvotes: 1

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