CODEWITHSUNDEEP
c#wpfxaml
JokerMartini
JokerMartini

Reputation: 6147

Set focus of textbox in context menu - wpf

I've looked into several methods of setting focus and nothing appeared to work. I'm sure someone out there has a solution to this. It's such a simple task.

I want to set the focus of the textbox which appears in the context menu when the user right-clicks on the listbox. I don't want the user to have to click the textbox each time they right-click.

enter image description here

MainWindow.xaml

<Window x:Class="WpfApplication1.MainWindow"
        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:WpfApplication1"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <ListBox>
            <ListBox.ContextMenu>
                <ContextMenu>
                    <ContextMenu.Template>
                        <ControlTemplate>
                            <Border BorderThickness="2" BorderBrush="sc#1,.1,.1,.1" CornerRadius="4" 
                                    Background="sc#1,.05,.05,.05">

                                <TextBox Grid.Row="0" Margin="4" MinWidth="150" Name="SearchBox" VerticalAlignment="Center">
                                </TextBox>

                            </Border>
                        </ControlTemplate>
                    </ContextMenu.Template>
                </ContextMenu>
            </ListBox.ContextMenu>
        </ListBox>
    </Grid>
</Window>

Upvotes: 2

Views: 1780

Answers (1)

AnjumSKhan
AnjumSKhan

Reputation: 9827

IsFocused property of TextBox is read only. This forces the use of method in our case.

You need CallMethodAction behavior. Good tutorial to start with.

<TextBox Grid.Row="0" Margin="4" MinWidth="150" Name="SearchBox" VerticalAlignment="Center">
    <i:Interaction.Triggers>
        <ei:PropertyChangedTrigger Binding="{Binding IsOpen, RelativeSource={RelativeSource AncestorType=ContextMenu, Mode=FindAncestor}}">
            <ei:CallMethodAction MethodName="FocusSearchBox" TargetObject="{Binding DataContext, ElementName=SearchBox}"/>
            <ei:ChangePropertyAction PropertyName="Background" Value="Purple"/>
        </ei:PropertyChangedTrigger>
    </i:Interaction.Triggers>
</TextBox>




public void FocusSearchBox()
        {
            TextBox t = (TextBox) CtxMenu.ContextMenu.Template.FindName("SearchBox", CtxMenu.ContextMenu);
            t.Focus();
        }

Upvotes: 1

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