C# grid DataSource polymorphism

Question

I have a grid, and I\'m setting the DataSource to a List. What I want is to have the list bind to the underlying type, and disply

Answer 1

You'll need to use a Grid template column for this. Inside the template field you'll need to check what the type of the object is and then get the correct property - I recommend creating a method in your code-behind which takes care of this. Thus:

    
        <%#GetUserSpecificProperty(Container.DataItem)%>
    

In your code-behind:

protected string GetUserSpecificProperty(IListItem obj) {
    if (obj is User) {
        return ((User) obj).UserSpecificField
    } else if (obj is Location) {
        return ((Location obj).LocationSpecificField;
    } else { 
        return "";
    }
}