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UnmanagedMemoryAccessor Constructor (SafeBuffer, Int64, Int64, FileAccess)

.NET Framework 4.6 and 4.5

Initializes a new instance of the UnmanagedMemoryAccessor class with a specified buffer, offset, capacity, and access right.

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

'Declaration
Public Sub New ( _
	buffer As SafeBuffer, _
	offset As Long, _
	capacity As Long, _
	access As FileAccess _
)

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.

ExceptionCondition
ArgumentException

offset plus capacity is greater than buffer.

ArgumentNullException

buffer is Nothing.

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.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4
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