DataTemplate with an object taking a generic

See more:

C#

WPF

Assume I have an object as such

public interface ICustomObj
{
  ....
}

public class CustomObj<t> : ICustomObj
{
 //Impliments ICustomObj
}
</t>

I have a different object that has a collection of the CustomObj's and they have different types (e.g. some have strings and some have Date Time values. I would like to define a different data template for the type

CustomObj<string></string>

and for

CustomObj<datetime></datetime>

Can this be done?

[EDIT]

In an attempt to use the converter I am stumbling on how to pass the generic value to the converter...

I want to due something like this:

<ListBox ItemsSource="{Binding Path=EntryItems}">
 <ListBox.ItemTemplate>
   <DataTemplate Template="{Binding Path=Value, Converter=EntryConverter}"/>
 </ListBox.ItemTemplate>
</ListBox>

But get the error

The property 'Template' cannot be set as a property element on template. Only Triggers and Storyboards are allowed as property elements.

[EDIT]
Solution is to use a DataTemplateSelector. An easy example can be found Here[^]