MeasureString

private static double GetStringWidth(string text, Control control)
        {
            Typeface typeface = new Typeface(control.FontFamily, control.FontStyle, control.FontWeight, control.FontStretch);

            GlyphTypeface glyphTypeface;
            if (!typeface.TryGetGlyphTypeface(out glyphTypeface))
                throw new InvalidOperationException("No glyph typeface found");

            double size = control.FontSize;

Vaccano

public class SimpleCommand<T> : ICommand
{
    public Predicate<T> CanExecuteDelegate { get; set; }
    public Action<T> ExecuteDelegate { get; set; }

    #region ICommand Members

    public bool CanExecute(object parameter)
    {
        if (CanExecuteDelegate != null)