Updated: September 2010
Copies the contents of a managed SecureString object into unmanaged memory.
Assembly: mscorlib (in mscorlib.dll)
- Type: System.Security::SecureString
The managed object to copy.
The method is useful for custom marshaling or for use when mixing managed and unmanaged code. Because this method allocates the unmanaged memory required for a string, always free the memory by calling the ZeroFreeGlobalAllocUnicode method.Notes to Callers
This method is supported only on computers running Windows 2000 Service Pack 3 or later.
The following example demonstrates how to use the method with the unmanaged LogonUser function to perform impersonation with the SecureString class. The example then uses the ZeroFreeGlobalAllocUnicode method to zero out and free the unmanaged string reference.
requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.