<TargetedPatchingOptOutAttribute("Performance critical to inline across NGen image boundaries")>
Public Overloads Function IndexOf( _
   ByVal item As DataSourceInfo _
) As Integer

Dim instance As DataSourceInfoCollection
Dim item As DataSourceInfo
Dim value As Integer
 
value = instance.IndexOf(item)

[TargetedPatchingOptOutAttribute("Performance critical to inline across NGen image boundaries")]
public int IndexOf( 
   DataSourceInfo item
)