Gets the collection of response headers.
Assembly: System.Web (in System.Web.dll)
The operation requires the integrated pipeline mode in IIS 7.0 and at least the .NET Framework version 3.0.
The property is only supported with the IIS 7.0 integrated pipeline mode and at least the .NET Framework 3.0. When you try to access the property and either of these two conditions is not met, a PlatformNotSupportedException is thrown.