User control bypass to enable "." Namespaces

Question

I have a third-party control (Visifire) that has a namespace that uses ".". format. This works fine in a WPF application, but not in UserControl, because when you create a namespace object, it creates "cannot find assembly". This means that I have to use the code to add the control, configure the bindings, etc. Etc. Which is pretty annoying as I would rather use XAML. My thought was to trick UserControl using the following:

namespace MyControl
{
  public class MyChart : Visifire.Charts.Chart
  {
     public MyChart () : base() {}
  }

  public partial Chart : UserControl
  {
    // All the control stuff goes here
  }
}

Then in XAML I would use:

xmlns:local="clr-namespace:MyControl"

<Grid>
    <local:MyChart>
    </local:MyChart>
</Grid>

This does not work because it throws an exception. Does anyone have any tips on how I could get around this? Extremely important!

Answer 1

:

<Grid xmlns:charts="clr-namespace:Visifire.Charts;assembly=Visifire">
    <charts:Chart>...</charts:Chart>
</Grid>

, ?