• Article

SafeHandle Constructor (IntPtr, Boolean)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

This type can be used only by trusted applications. If you try to use its members in a partial-trust application, your code will throw a MethodAccessException exception. This type is security-critical, which restricts its use.

[SECURITY CRITICAL]

Initializes a new instance of the SafeHandle class with the specified invalid handle value.

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

Syntax

'Declaration
Protected Sub New ( _
    invalidHandleValue As IntPtr, _
    ownsHandle As Boolean _
)

protected SafeHandle(
    IntPtr invalidHandleValue,
    bool ownsHandle
)

Parameters

  • invalidHandleValue
    Type: System.IntPtr
    The value of an invalid handle (usually 0 or -1). Your implementation of IsInvalid should return true for this value.
  • ownsHandle
    Type: System.Boolean
    true to reliably let SafeHandle release the handle during the finalization phase; otherwise, false (not recommended).

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.