This attribute tells COM clients that the types in the assembly are backward-compatible with those from an earlier version. public sealed class ComCompatibleVersionAttribute : Attribute { // Public Constructors public ComCompatibleVersionAttribute (int major , int minor , int build , int revision ); // Public Instance Properties public int BuildNumber {get; } public int MajorVersion {get; } public int MinorVersion {get; } public int RevisionNumber {get; } } HierarchySystem.Object System.Attribute ComCompatibleVersionAttribute Valid OnAssembly |