VB.NET Core Classes in a Nutshell

Name

GCHandle

Synopsis

This class is used when you need to pass a managed object to unmanaged code. To use this class, pass an instance of a .NET-managed type to the Alloc() method. The single-argument form of Alloc() creates the GCHandle with GCHandleType.Normal, which ensures that the object will not be freed by the garbage collector. (This means that some kind of user code must also call the Free() method in order to release the object.) Managed code can use the Target property to access the underlying object.

Public Structure GCHandle
                  ' Public Instance Properties
   Public ReadOnly Property IsAllocated As Boolean  
   Public Property Target As Object  
' Public Shared Methods
   Public Shared Function Alloc(
        ByVal value As Object) As GCHandle  
   Public Shared Function Alloc(ByVal value As Object, 
        ByVal type As GCHandleType) As GCHandle  
   Public Shared explicit operator Sub GCHandle(
        ByVal value As IntPtr) 
   Public Shared explicit operator Sub IntPtr(
        ByVal value As GCHandle) 
' Public Instance Methods
   Public Function AddrOfPinnedObject() As IntPtr  
   Public Sub Free() 
End Structure

Hierarchy

System.Object→System.ValueType→ GCHandle