System.ComponentModel.DebugTypeDescriptor.ComponentEntry.MemberList.ReflectGetCustomAttributes C# (CSharp) Method

                private void ReflectGetCustomAttributes(Type classToReflect, Type metadataType) {
                    AttributeCollection baseAttributes = null;
                    Hashtable           attrHash = new Hashtable();
#if DEBUG
                    if (CompDescrSwitch.TraceVerbose) {
                        Debug.WriteLine("  retrieving metadata for " + classToReflect.FullName);
                        Debug.WriteLine("  classToRefelct: " + classToReflect.FullName);
                        Debug.WriteLine("  metadataType: " + metadataType.FullName);
                    }
#endif

                    // We only want to reflect on one level at a time,
                    // so if we have a base class above object, we get the
                    // attributes for that first.
                    //
                    Type baseType = classToReflect.BaseType;
                    if (baseType != typeof(object) && baseType != null) {
                        baseAttributes = DebugTypeDescriptor.GetAttributes(baseType);
                    }

                    if (baseAttributes != null && baseAttributes.Count > 0) {
                        foreach (Attribute attr in baseAttributes) {
                            Type attrType = attr.GetType();
                            if (metadataType.IsAssignableFrom(attrType)) {
                                attrHash[attr.TypeId] = attr;    
                            }
                        }
                    }

                    // now get our attributes
                    //
                    object[] attributes = DebugTypeDescriptor.GetCustomAttributes(classToReflect);

                    foreach (Attribute attr in attributes) {
                        Type attrType = attr.GetType();
                        if (metadataType.IsAssignableFrom(attrType)) {
                            attrHash[attr.TypeId] = attr;    
                        }
                    }

                    // push the values up to the top level
                    //
                    foreach (Attribute attr in attrHash.Values) {
                        AddMember(attr);
                    }
                }