Overrides the Visible property that is inherited from the base Control class to prevent setting this value.
Public Overrides Property Visible As Boolean
<asp:ScriptManager Visible="True|False" />
A value is assigned to the Visible property.
The Visible property is overridden in the ScriptManager class to prevent setting this value. A NotImplementedException error occurs if a value is assigned to this property.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.