How define namespace

[Asgharkhan]

How Define Namespac for this

<local:AttributeQueryControl x:Name="MyControl" Map="{Binding ElementName=MyMap}" VerticalAlignment="Center" HorizontalAlingment="Center"/>

xmlns:local="AttributeQueryControl.test"

i define but not working  Jennifer Nery‌Dominique Broux‌

[Venkata_RaoTammineni]

xmlns:textControls="clr-namespace:TextControls"

TextControls is class.