DescriptionAttribute von vorhandener Klasse übernehmen

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using System.ComponentModel;

#region Referenced Description Attribute

public class ReferencedDescriptionAttribute : DescriptionAttribute
{

  public ReferencedDescriptionAttribute(Type referencedType, string propertyName)
  {
    string result = "Referenced description not available";

    //    gets the properties of the referenced type
    PropertyDescriptorCollection properties
            = TypeDescriptor.GetProperties(referencedType);

    if (properties != null) {
      // gets a PropertyDescriptor to the specific property.
      PropertyDescriptor property = properties[propertyName];
      if (property != null) {
        //  gets the attributes of the required property
        AttributeCollection attributes = property.Attributes;

        // Gets the description attribute from the collection.
        DescriptionAttribute descript
          = (DescriptionAttribute)attributes[typeof(DescriptionAttribute)];

        // register the referenced description
        if (!String.IsNullOrEmpty(descript.Description))
          result = descript.Description;
      }
    }
    DescriptionValue = result;

  }
}

#endregion