'宣言
<System.Runtime.TargetedPatchingOptOutAttribute("Performance critical to inline across NGen image boundaries")>
<__DynamicallyInvokableAttribute()>
Public Overloads Function Contains( _
ByVal As _
) As System.Boolean
[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
[__DynamicallyInvokable()]
public System.bool Contains(
)