how to set dependency property for width and height in wpf ,C#

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C#

XAML

WPF

Windows-Phone-8

i created dependency property for text wrapping like below

public static readonly DependencyProperty MTextWrapProperty = DependencyProperty.Register("MTextWrap",
    typeof(TextWrapping), typeof(MarqueeTextBlock), null);

      public TextWrapping MTextWrap
      {
          get { return (TextWrapping)this.GetValue(MFontSizeProperty); }
          set
          {
              this.SetValue(MTextWrapProperty, value);
          }
      }

Now how can i create dependency property for width and height?