In VBA, according to the selected project to obtain the typical associated with the project is obtained in this way, how to obtain the typical in C #?

hello everyone!
In VBA, according to the selected project to obtain the typical associated with the project is obtained in this way, how to obtain the typical in C #?
VBA code

Public Function GetAssosation(选中的项目 As Project) As Project

    If Not 选中的项目 Is Nothing Then

        Dim ass As association

        For Each ass In 选中的项目.TargetAssociations.Filter(aucRoleProject2Project)

            Set GetAssosation = ass.RelatedObject

            Exit Function

        Next ass

    End If

End Function

Code, online, etc

 ’在线等……

Thank you, the best reply!