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Public Const CREATE_ALWAYS As UInteger = 2 Public Const GENERIC_WRITE As UInteger = &H40000000 Public Const GENERIC_READ As Long = &H80000000 Public Const INVALID_HANDLE_VALUE As Short = -1 Public Const FILE_ATTRIBUTE_NORMAL As Short = &H80 Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error()) ĭim loader As New UnmanagedFileLoader("example.xml") HandleValue = CreateFile(Path, GENERIC_WRITE, 0, IntPtr.Zero, OPEN_EXISTING, 0, IntPtr.Zero) Private SafeFileHandle handleValue = null Uint dwFlagsAndAttributes, IntPtr hTemplateFile) Uint dwShareMode, IntPtr lpSecurityAttributes, uint dwCreationDisposition, Static extern SafeFileHandle CreateFile(string lpFileName, uint dwDesiredAccess, see the unmanaged MSDN reference library. For more information about CreateFile, Use interop to call the CreateFile function. Public const uint GENERIC_WRITE = 0x40000000 Public const uint GENERIC_READ = 0x80000000 Public const short INVALID_HANDLE_VALUE = -1 Public const short FILE_ATTRIBUTE_NORMAL = 0x80 UnmanagedFileLoader loader = new UnmanagedFileLoader("example.xml")
#Make string filesafe how to
The following code example demonstrates how to open a file using the SafeFileHandle class and the unmanaged CreateFile function. Inherits SafeHandleZeroOrMinusOneIsInvalid Inheritance Inherits SafeHandle Public NotInheritable Class SafeFileHandle Inherit SafeHandleZeroOrMinusOneIsInvalid Public NotInheritable Class SafeFileHandle Inherit SafeHandleZeroOrMinusOneIsInvalid Inherit SafeHandle type SafeFileHandle = class
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Public sealed class SafeFileHandle : public sealed class SafeFileHandle : In this article public ref class SafeFileHandle sealed : System::Runtime::InteropServices::SafeHandle public ref class SafeFileHandle sealed : Microsoft::Win32::SafeHandles::SafeHandleZeroOrMinusOneIsInvalid Represents a wrapper class for a file handle.