IMAGE_DATA_DIRECTORY

C# Definition:

[StructLayout(LayoutKind.Sequential)]
    public struct IMAGE_DATA_DIRECTORY
    {
        public UInt32 VirtualAddress;
        public UInt32 Size;
    }

VB Definition:

<StructLayout(LayoutKind.Sequential, Pack:=1)> _
  Public Structure IMAGE_DATA_DIRECTORY

    ''' <summary>
    ''' RVA of the data 
    ''' </summary>
    ''' <remarks></remarks>
    Public VirtualAddress As UInt32

    ''' <summary>
    ''' Size of the data
    ''' </summary>
    ''' <remarks></remarks>
    Public Size As UInt32

  End Structure

VB 6 Definition:

Public Type IMAGE_DATA_DIRECTORY
    VirtualAddress As Long  ' relative virtual address of the table (aka data)
    Size As Long            ' Size of the table (aka data)
  End Type