CODEWITHSUNDEEP
c#wpfwpfdatagrid
Lorenz Killer
Lorenz Killer

Reputation: 95

Datagrid no double click to edit columns

I am using a WPF DataGrid in a simple Window to display some Data provided by a Model.

<DataGrid x:Name="unitTable" ItemsSource="{Binding Units}" AutoGenerateColumns="False">
    <DataGrid.Columns>
         <DataGridCheckBoxColumn Binding="{Binding Path=IsChosen, Mode=TwoWay}" Header="Chosen"></DataGridCheckBoxColumn>
         <DataGridTextColumn Binding="{Binding Path=Name, Mode=TwoWay}" Header="Name"></DataGridTextColumn>
         <DataGridTextColumn IsReadOnly="True" Binding="{Binding Path=IsActive, Mode=TwoWay, Converter={StaticResource boolToActive}}" Header="Active"></DataGridTextColumn>
    </DataGrid.Columns>
</DataGrid>

Everything worked perfectly fine with the model, but there was this problem where I had to double click the columns to edit the value of the checkboxes for example.

I came up with this solution:

<Style TargetType="DataGridCell" x:Key="NoDoubleClick">
      <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="True">
                 <Setter Property="IsEditing" Value="True" />
            </Trigger>
      </Style.Triggers>
</Style>

And after I assigned the style to the Checkbox- and the first TextColumn it actually worked :) After a while I realized, that the model doesn't get updated anymore when the Style "NoDoubleClick" was assigned to a column.

Can anybody tell me what I am doing wrong?

Upvotes: 3

Views: 543

Answers (2)

na th
na th

Reputation: 145

Manfred Radlwimmer is right. 

UpdateSourceTrigger=PropertyChanged

is needed to update the model.

  <DataGrid x:Name="unitTable" ItemsSource="{Binding Units}" AutoGenerateColumns="False">
<DataGrid.Columns>
     <DataGridCheckBoxColumn Binding="{Binding Path=IsChosen, Mode=TwoWay}" Header="Chosen"></DataGridCheckBoxColumn>
     <DataGridTextColumn Binding="{Binding Path=Name, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Header="Name"></DataGridTextColumn>
     <DataGridTextColumn IsReadOnly="True" Binding="{Binding Path=IsActive, Mode=TwoWay, Converter={StaticResource boolToActive}}" Header="Active"></DataGridTextColumn>
</DataGrid.Columns>

Upvotes: 0

Manfred Radlwimmer
Manfred Radlwimmer

Reputation: 13394

DataGridColumns usually only update the bound data when the edited cells lose focus. To get around this and make it work with your Style, set the UpdateSourceTrigger of your Binding to PropertyChanged.

Upvotes: 2

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