CODEWITHSUNDEEP
mvvmsilverlight-4.0user-controlsprism-4
imdadhusen
imdadhusen

Reputation: 2494

Not able to bind UserControl from main View

I have created user control which contain TextBox and PasswordBox. RestrictedBox.xaml

<UserControl.Resources>
        <Converters:BoolToVisibilityConverter x:Key="boolToVisConverter" />
        <Converters:BoolToVisibilityConverter x:Key="boolToVisConverterReverse" />
    </UserControl.Resources>
    <Grid x:Name="LayoutRoot" Background="White" Width="Auto">
        <StackPanel Margin="5,5,5,5">
            <TextBox Text="{Binding TextValue}" Visibility="{Binding IsTextBox,Converter={StaticResource boolToVisConverter}}" BorderBrush="Green" />
            <PasswordBox Password="{Binding TextValue}" Visibility="{Binding IsTextBox,Converter={StaticResource boolToVisConverterReverse}}" BorderBrush="Red" />
        </StackPanel>
    </Grid>

RestrictedBox.xaml.cs

public partial class RestrictedBox : UserControl
    {
        public RestrictedBox()
        {
            InitializeComponent();
        }

        public string TextValue
        {
            get { return (string)GetValue(TextValueProperty); }
            set { SetValue(TextValueProperty, value); }
        }
        public static readonly DependencyProperty TextValueProperty = DependencyProperty.Register("TextValue", typeof(string), typeof(RestrictedBox), new PropertyMetadata(default(string)));

        public bool IsTextBox
        {
            get { return (bool)GetValue(IsTextBoxProperty); }
            set { SetValue(IsTextBoxProperty, value); }
        }
        public static readonly DependencyProperty IsTextBoxProperty = DependencyProperty.Register("IsTextBox", typeof(bool), typeof(RestrictedBox), new PropertyMetadata(default(bool)));
    }

Now i added above User Control to my LoginView.xaml page

<control:RestrictedBox TextValue="Imdadhusen" IsTextBox="True"   />

Now i run the application but the TextValue = "Imdadhusen" is not bind with my text box and the second property IsTextBox is set to True that means it will automatically hide Passwordbox else Textbox.

Any help would be appreciated!

Thanks, Imdadhusen

Upvotes: 3

Views: 179

Answers (2)

Manoj Savalia
Manoj Savalia

Reputation: 1402

Please set your DataContext because in user control it does not understand DataContext. So try to this in your constructor.

 this.DataContext = this;

May be this help to you...

Upvotes: 2

imdadhusen
imdadhusen

Reputation: 2494

UserControls do not register themselves as the data context automatically so the binding inside the user control won't have anything to bind to.

I have added following line my UserControl codebehind to enable default binding.

public RestrictedBox()
{
     InitializeComponent();
     this.DataContext = this;
}

Thanks, Imdadhusen

Upvotes: 1

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