Bind value between control in different view -- WPF / MVVM

in my MVVM application (in wpf) i have two view and I want to bind the context of my label on my tex开发者_JS百科tbox value (in the other view)

SelectorView.xaml contain this control: <TextBox x:Name="tbArt" value="XX"/>

DescriptionView.xaml contain this control: <label context="{binding on the tbArt value????}">

Is that possible directly without going in code behing and viewmodels ? Will the label be refresh automatically ?

Thanks !

If both of the controls databinds to the same property the label will refresh when the value is changed.Make sure that the property triggers property changed when it gets changed.

ex: in XAML.

 <TextBox x:Name="tbArt" value="{Binding Path=TheProperty, UpdateSourceTrigger=PropertyChanged}"/>
<label context="{binding TheProperty}">

in the textbox make sure you use:

UpdateSourceTrigger=PropertyChanged

. otherwise the property won't be changed until focus is shifted from the textbox.

If all you want to do is display the value of one control in another control within the same window/page, you could do the following:

<TextBox x:Name="tbArt" Text="XX" />
<Label Content="{Binding Path=Text", ElementName=tbArt}" />

This will bind the content of the Text of the label to a control with the name "tbArt". You can do the same thing with other properties of the control as well.

For instance,

<TextBox x:Name="tbArt" Text="XX" Width=33 />
<Label Content="{Binding Path=Width, ElementName=tbArt}" />

will display "XX" in the textbox and "33" in the label.