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if you want to have the same width size for each items in WrapPanel (in in ListBox for sample) you can use Grid.IsSharedSizeScope= »True » like this <Window.Resources> <DataTemplate DataType= »{x:Type local:ColorX} »> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width= »Auto » SharedSizeGroup= »ColumnSize » /> </Grid.ColumnDefinitions> <StackPanel Orientation= »Horizontal » Margin= »2″> <Rectangle Width= »40″ Height= »25″ Fill= »{Binding Brush} » Stroke= »Black » /> <TextBox Text= »{Binding Name} » IsReadOnly= »true » Background= »Transparent » VerticalAlignment= »Center » BorderThickness= »0″ Margin= »4 0 4 […]

When you try to connect an MVVM command, it must be better to have a fallbackvalue if binding not release a null static command return false is the solution for showed that the binding cannot be set (and not allow command) for sample if i have the command : CloseCommand in Selected in my MVVM […]

If you want to use your own compenent you muste speicfy an xmlns:xxxx= » » in xaml and use like this <xxx:myComponent ….. if you want to set your compenent on global or specific namespace 1- create a project 2– place component in this project 3– add this line in assemblyinfo.cs of this project [assembly: XmlnsDefinition(« http://schemas.microsoft.com/winfx/2006/xaml/presentation », « UltimateCorp.Components »)] […]

To have visible Binding on ColumnDefinition (idem a RowDefinition) use this class public class ColumnDefinitionExtended : ColumnDefinition { // Variables public static DependencyProperty VisibleProperty; // Properties public Boolean Visible { get { return (Boolean)GetValue(VisibleProperty); } set { SetValue(VisibleProperty, value); } } // Constructors static ColumnDefinitionExtended() { VisibleProperty = DependencyProperty.Register(« Visible », typeof(Boolean), typeof(ColumnDefinitionExtended), new PropertyMetadata(true, new PropertyChangedCallback(OnVisibleChanged))); […]

for capturing message for example public class EventTrigger : System.Windows.Interactivity.EventTrigger { #region CaptureEvent (DP SHORT) public bool CaptureEvent { get { return (bool)GetValue(CaptureEventProperty); } set { SetValue(CaptureEventProperty, value); } } public static readonly DependencyProperty CaptureEventProperty = DependencyProperty.Register(« CaptureEvent », typeof(bool), typeof(EventTrigger), new PropertyMetadata(false)); #endregion protected override void OnEvent(EventArgs eventArgs) { if (eventArgs is RoutedEventArgs) { (eventArgs as […]

if you have initial SolidColorBrush like <SolidColorBrush x:Key= »ycolor » Color= »green » /> you can get the color or create another SolidColorBrush and using color <SolidColorBrush x:Key= »ycolor_copy » Color= »{Binding Source={StaticResource ycolor}, Path=Color} » />  

here a class for clonning visualtree inside with binding public class Header : ContentControl, ICloneable { static Header() { EditorHelper.Register<BindingExpression, BindingConvertor>(); } public object Clone() { StringBuilder outstr = new StringBuilder(); //this code need for right XML fomating XmlWriterSettings settings = new XmlWriterSettings(); settings.Indent = true; settings.OmitXmlDeclaration = true; XamlDesignerSerializationManager dsm = new XamlDesignerSerializationManager(XmlWriter.Create(outstr, settings)); […]