Marshal::ZeroFreeCoTaskMemAnsi Method (IntPtr)


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Frees an unmanaged string pointer that was allocated using the SecureStringToCoTaskMemAnsi method.

Namespace:   System.Runtime.InteropServices
Assembly:  mscorlib (in mscorlib.dll)

static void ZeroFreeCoTaskMemAnsi(
	IntPtr s


Type: System::IntPtr

The address of the unmanaged string to free.

The ZeroFreeCoTaskMemAnsi method first zeros out and then frees unmanaged memory that was allocated using the SecureStringToCoTaskMemAnsi method.

The following example uses the SecureStringToCoTaskMemAnsi method to marshal and decrypt the contents of a SecureString object to a block of unmanaged memory. It then uses the ZeroFreeCoTaskMemAnsi method to zero out and dispose the unmanaged block.

No code example is currently available or this language may not be supported.


requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
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