The DescriptonAttribute is a runtime attribute. You can attach some text to an Enum and get it later to expand/explain the meaning to users. For VS/Intellisence support you want to use triple ticks to create a summary block:
Friend Enum MediaInfoItem As Integer
''' <summary>
''' File Name to be processed
''' </summary>
''' <remarks></remarks>
<Description("File name")> FileName
<Description("File Size")> FileSize
<Description("Running Time")> Duration
...
End Enum
Here, only FileName will have Intellisence information; the Description is retrieved with code. They will show up as Const, because they are. MediaInfoItem
would display as an Enum.