.NET – DATATEMPLATE.DATATYPE in Silverlight

...

...

 
 
  Visibilty="{Binding Converter={StaticResource ViewVisibilityConverter}, ConverterParameter=Enum }" /> 
  Visibilty="{Binding Converter={StaticResource ViewVisibilityConverter}, ConverterParameter=Text}" />
  

var fieldVM = value as FieldVM;

switch fieldVM.FieldType:
{
 case "Text":
 return Application.Current .Resources["TextTemplate"] as DataTemplate;

 case "Enum":
 return Applica tion.Current.Resources["EnumTemplate"] as DataTemplate;

}

I have an attribute view model, which is an ObservableCollection< FieldVM>. In the view that uses this attribute, I have an ItemsControl as follows:

...

...

FieldVM is an abstract class, implemented by classes such as TextFieldVM and EnumFieldVM. During runtime, these FieldVM implementations are added to the Fields property, and I want them Show the view associated with it in my view.

In WPF, it’s easy to do this, and I do it all the time. You just need to do this in the appropriate resource dictionary, and everything is as per It works as expected:

Now , Silverlight works for the first time, I hope I can do the same thing, but DataTemplate does not have a DataType property. I am stuck. What is Silverlight’s approach?

Use the value converter to bind the type to the visibility of each view:

 
 
  Visibilty="{Binding Converter={StaticResource ViewVisibilityConverter}, ConverterParameter=Enum}" /> 
  Visibilty="{Binding Converter={StaticResource ViewVisibilityConverter}, ConverterParameter=Text}" />
 

In the ConvertTo of ViewVisibilityConverter , Switch visibility according to type.

Another way to view is to use different types of value converters to return different data templates from Application.Resources.

In ItemTemplateFactory.Convert():

var fieldVM = value as FieldVM;

switch fieldVM.FieldType:
{
 case "Text":
 return Application.Current.Resources["TextTemplate"] as DataTemplate;

 case "Enum":
 return Application.Current.Resources["EnumTemplate"] as DataTemplate;

}