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C# XAML binding


C# XAML binding

By : user2185393
Date : November 21 2020, 04:01 AM
I wish this helpful for you You can use a Border control instead of line and assign the actual width of your TextBox using it's name:
code :
<Border HorizontalAlignment="Left" BorderThickness="1" BorderBrush="Red" Width="{Binding ElementName=tb, Path=ActualWidth}"/>


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XAML inline data binding doesn't work; code behind binding works

XAML inline data binding doesn't work; code behind binding works


By : Atif Ali
Date : March 29 2020, 07:55 AM
wish helps you With respect to your suspicions:
1) I think the default binding behavior of a TextBox is TwoWay, with a LostFocus update trigger, meaning that your UI focus will have to change to another control before the binding will update, if changes are made in the UI.
code :
class PartViewModel : INotifyPropertyChanged
{

    #region INotifyPropertyChanged Members

    public event PropertyChangedEventHandler PropertyChanged;

    #endregion

    public PartClass Data { get; set; }

    public String SomeVMProperty
    {
        get { return Data.SomeProperty; }

        set
        {
            if (Data.SomeProperty != value)
                Data.SomeProperty = value;
            this.PropertyChanged(this, new PropertyChangedEventArgs("SomeVMProperty"));
        }
    }

}

class PartClass
{
    public string SomeProperty { get; set; }
}
<UserControl x:Class="WpfApplication1.PartUserControl"
            ... >
    <Grid>
        <TextBox Text="{Binding SomeVMProperty}" Margin="68,77,104,176" />
    </Grid>
</UserControl>
MyUserControlInstance.DataContext = new PartViewModel(); // or some existing PartViewModel
binding in xaml, xaml parse exception

binding in xaml, xaml parse exception


By : mystique
Date : March 29 2020, 07:55 AM
I hope this helps . Yes, there is an error in that line. Please give some more information about where is the button you refer to in that binding.
If it's the control that you create template for, you can try to remove the line:
code :
<!-- this line causes an error -->
<Binding Path="Object" ElementName="{TemplateBinding Property=Button.Height}" />
<Binding RelativeSource="{RelativeSource TemplatedParent}" Path="Height" />
Binding sometimes fails, depending on position of {Binding} in XAML file

Binding sometimes fails, depending on position of {Binding} in XAML file


By : Jason Korth
Date : March 29 2020, 07:55 AM
Hope that helps The dataContext is passed only throught the Object Tree. The Property tag is not in the visual tree and will not respond to DataContext changed Event and the binding is not refreshed without this event.
See : Dependency property identifier field: DataContextProperty from the FrameworlElement
Why does binding the MainWindow datacontext in XAML fail to act the same as binding in the codebehind with this.datacont

Why does binding the MainWindow datacontext in XAML fail to act the same as binding in the codebehind with this.datacont


By : Rodrigo Quaresma
Date : March 29 2020, 07:55 AM
hop of those help? I am trying to use Data binding to bind an ObservableCollection to the ItemsSource of a DataGrid, as I learn about WPF and stuff.
code :
<Window.DataContext>
    <local:MainWindow/>
</Window.DataContext>
this.DataContext = this;
<Window DataContext="{Binding RelativeSource={RelativeSource Self}}">
</Window>
XAML Binding in Style Setter using the Binding Path from the target control

XAML Binding in Style Setter using the Binding Path from the target control


By : Murtaza Jaffari
Date : March 29 2020, 07:55 AM
help you fix your problem I would suggest you the "validator" pattern (look to spec INotifyDataErrorInfo) combined with custom Behaviour. Validator crates the collection with results according bound property names in item and Bahaviour change the element. Check the MSDN help.
code :
Xaml Example:
                    <TextBox 
                             Name="a"
                    Text="{Binding *Variable*, Mode=OneWay}"
                    Header="Start"
                    Style ="{StaticResource MitfahrenDefaultTextEdit}" IsReadOnly="true" 
                    Tapped="StartLocation_OnTapped">
                        <interactivity:Interaction.Behaviors>
                            <behaviors:RedFormFieldOnErrors 
                                PropertyErrors="{Binding Path=Record.ValidationCollection[*Variable*]}"/>
                        </interactivity:Interaction.Behaviors>
                    </TextBox>
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