Compiler Warning (level 2) CS1587

XML comment is not placed on a valid language element

Recommended tags for documentation comments are not allowed on all language elements. For example, a tag is not allowed on a namespace. For more information on XML comments, see Recommended Tags for Documentation Comments (C# Programming Guide).

Example

The following sample generates CS1587:

// CS1587.cs
// compile with: /W:2 /doc:x.xml

/// <summary>test</summary>   // CS1587, tag not allowed on namespace
namespace MySpace
{
    class MyClass
    {
        public static void Main()
        {
        }
    }
}