Xaml Mapping to a referenced Assembly?

Question

How can I map a Namespace of a referenced assembly in Xaml.

Local Assembly:

<?Mapping XmlNamespace="local" ClrNamespace="AvalonApplication1" ?>

<local:Class1  />

??? External Assembly:
<?Mapping XmlNamespace="local" ClrNamespace="External" ?>

<local:Class1  />

Error: Window1.xaml(9,10): error MC3074: Unknown tag 'DataSource' in namespace 'local'. Note that tag names are case sensitive. Line 9 Position 10.

This Assembly is not in GAC.

Answer 1

Did you set the refenrence in your root element?

<?Mapping XmlNamespace="local" ClrNamespace="External" Assembly="YourAssembly" ?>

<Canvas
  xmlns="http://schemas.microsoft.com/winfx/avalon/2005"
  xmlns:x=http://schemas.microsoft.com/winfx/xaml/2005
  xmlns:local="local">  

<local:Class1  />

Answer 2

Konstantin Gonikman wrote:

Did you set the refenrence in your root element? <?Mapping XmlNamespace="local" ClrNamespace="External" Assembly="YourAssembly" ?> <Canvas   xmlns="http://schemas.microsoft.com/winfx/avalon/2005"   xmlns:x=http://schemas.microsoft.com/winfx/xaml/2005   xmlns:local="local">   <local:Class1  />

Well I think you answered the question. I think his initial problem is that he was missing the Assembly attribute on the Mapping instruction, but yes you'll need the XML namespace declaration as well.

Cheers,
Drew

Answer 3

Thank you, indeed I missed the Assembly attribute.