UnmanagedMemoryAccessor::Initialize Method (SafeBuffer^, Int64, Int64, FileAccess)

.NET Framework (current version)

Sets the initial values for the accessor.

Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)

Syntax

protected:
[SecurityPermissionAttribute(SecurityAction::Demand, Flags = SecurityPermissionFlag::UnmanagedCode)]
void Initialize(
	SafeBuffer^ buffer,
	long long offset,
	long long capacity,
	FileAccess access
)

Parameters

buffer: Type: System.Runtime.InteropServices::SafeBuffer^
The buffer to contain the accessor.

offset: Type: System::Int64
The byte at which to start the accessor.

capacity: Type: System::Int64
The size, in bytes, of memory to allocate.

access: Type: System.IO::FileAccess
The type of access allowed to the memory. The default is ReadWrite.

Exceptions

Exception	Condition
ArgumentException	offset plus capacity is greater than buffer.
ArgumentNullException	buffer is null.
ArgumentOutOfRangeException	offset or capacity is less than zero. -or- access is not a valid MemoryMappedFileAccess enumeration value.
InvalidOperationException	offset plus capacity would wrap around the high end of the address space.

Remarks

This method is called by the constructors for this class.

Security

SecurityPermission

for access to unmanaged code. Associated enumeration: SecurityPermissionFlag::UnmanagedCode.

Version Information

Universal Windows Platform
Available since 10
.NET Framework
Available since 4.0