Implementations of IDisposable should check private disposed field in public/internal/protected methods

[jimmyheaddon]

Linked in dotnet/roslyn-analyzers#293.

Essentially if a class correctly implements the IDisposable pattern, then public/internal/protected methods should throw ObjectDisposedException(this.GetType().FullName) as per the majority of .NET framework classes (e.g. Socket).

if (this.disposed)
{
    throw new ObjectDisposedException(this.GetType().FullName);
}

Optionally an XML comment should be declared to reflect this:

/// <exception cref="ObjectDisposedException">Thrown if this instance of <see cref="ClassName" /> has been disposed.</exception>