WPF - Change cell colour when operation is successfull

Question

Hello!

I have this datagrid:

The last column has buttons ("+") that when pressed open the following window:

In this window when the "Registar" button is pressed the app executes an operationa and returns to the previous window.

I want the colour of the "+" button in the previous window to turn green after that, how can I achieve that?

Answer 1

Hi Tiago,
change in my code (in ViewModel):

Public Sub Execute(parameter As Object) Implements ICommand.Execute  
  Dim d = TryCast(parameter, Data)  
  Dim wnd As New Window With {.Width = 200, .Height = 200}  
  Dim stp As New StackPanel  
  wnd.Content = stp  
  Dim btnOK As New Button With {.Content = "Registrar"}  
  Dim btnCancel As New Button With {.Content = "Cancelar"}  
  stp.Children.Add(btnCancel)  
  stp.Children.Add(btnOK)  
  AddHandler btnOK.Click, Sub()  
                            wnd.DialogResult = True  
                            wnd.Close()  
                          End Sub  
  AddHandler btnCancel.Click, Sub()  
                                wnd.DialogResult = False  
                                wnd.Close()  
                              End Sub  
  If wnd.ShowDialog Then d.Executed = True  
End Sub  

Result:

Answer 2

Hi Tiago,
try following demo:

XAML:

<Window x:Class="Window074"  
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"  
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"  
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"  
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"  
        xmlns:local="clr-namespace:WpfApp1.WpfApp074"  
        mc:Ignorable="d"  
        Title="Demo DataGrid with Plus" Height="450" Width="800">  
  <Window.Resources>  
    <local:ViewModel x:Key="vm"/>  
  </Window.Resources>  
  <Grid DataContext="{StaticResource vm}">  
    <DataGrid ItemsSource="{Binding View}"  AutoGenerateColumns="False">  
      <DataGrid.Resources>  
        <Style x:Key="bgButtonCell" TargetType="DataGridCell">  
          <Style.Triggers>  
            <DataTrigger Binding="{Binding Executed}" Value="True">  
              <Setter Property="Background" Value="LightGreen"/>  
            </DataTrigger>  
          </Style.Triggers>  
        </Style>  
        <Style x:Key="bgButton" TargetType="Button">  
          <Setter Property="BorderBrush" Value="Transparent"/>  
          <Setter Property="Background" Value="White"/>  
          <Style.Triggers>  
            <DataTrigger Binding="{Binding Executed}" Value="True">  
              <Setter Property="Background" Value="LightGreen"/>  
            </DataTrigger>  
          </Style.Triggers>  
        </Style>  
      </DataGrid.Resources>  
      <DataGrid.Columns>  
        <DataGridTextColumn Header="Col1" Binding="{Binding Col1}"/>  
        <DataGridTemplateColumn CellStyle="{StaticResource bgButtonCell}">  
          <DataGridTemplateColumn.CellTemplate>  
            <DataTemplate>  
              <Button Content="+"   
                      Margin="5" VerticalAlignment="Center" HorizontalAlignment="Center"  
                      Command="{Binding Source={StaticResource vm}}"   
                      CommandParameter="{Binding}"  
                      Style="{StaticResource bgButton}"/>  
            </DataTemplate>  
          </DataGridTemplateColumn.CellTemplate>  
        </DataGridTemplateColumn>  
      </DataGrid.Columns>  
    </DataGrid>  
  </Grid>  
</Window>  

And classes:

To show code is denied, see attached file: 55801-x.txt

Result: