MemoryMappedViewAccessor 类

定义

public ref class MemoryMappedViewAccessor sealed : System::IO::UnmanagedMemoryAccessor

public sealed class MemoryMappedViewAccessor : System.IO.UnmanagedMemoryAccessor

type MemoryMappedViewAccessor = class
    inherit UnmanagedMemoryAccessor

Public NotInheritable Class MemoryMappedViewAccessor
Inherits UnmanagedMemoryAccessor

继承

Object

UnmanagedMemoryAccessor

MemoryMappedViewAccessor

示例

以下示例从大型内存映射文件中获取 MemoryMappedViewAccessor 进行编辑。

此代码示例是为 MemoryMappedFile 类提供的一个更大示例的一部分。

// Create a random access view, from the 256th megabyte (the offset)
// to the 768th megabyte (the offset plus length).
using (var accessor = mmf.CreateViewAccessor(offset, length))
{
    int colorSize = Marshal.SizeOf(typeof(MyColor));
    MyColor color;

    // Make changes to the view.
    for (long i = 0; i < length; i += colorSize)
    {
        accessor.Read(i, out color);
        color.Brighten(10);
        accessor.Write(i, ref color);
    }
}

' Create a random access view, from the 256th megabyte (the offset)
' to the 768th megabyte (the offset plus length).
Using accessor = mmf.CreateViewAccessor(offset, length)
    Dim colorSize As Integer = Marshal.SizeOf(GetType(MyColor))
    Dim color As MyColor
    Dim i As Long = 0

    ' Make changes to the view.
    Do While (i < length)
        accessor.Read(i, color)
        color.Brighten(10)
        accessor.Write(i, color)
        i += colorSize
    Loop
End Using

注解

CreateViewAccessor使用 对象的 方法MemoryMappedFile获取此视图。

属性

方法

适用于

另请参阅

• 内存映射文件