本文整理匯總了C#中System.IO.UnmanagedMemoryStream.CanWrite屬性的典型用法代碼示例。如果您正苦於以下問題：C# UnmanagedMemoryStream.CanWrite屬性的具體用法？C# UnmanagedMemoryStream.CanWrite怎麽用？C# UnmanagedMemoryStream.CanWrite使用的例子？那麽, 這裏精選的屬性代碼示例或許可以為您提供幫助。您也可以進一步了解該屬性所在類System.IO.UnmanagedMemoryStream的用法示例。
在下文中一共展示了UnmanagedMemoryStream.CanWrite屬性的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: Main
// Note: You must compile this sample using the unsafe flag.
// From the command line, type the following: csc sample.cs /unsafe
using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
unsafe class Program
{
static void Main()
{
// Create some data to write.
byte[] text = UnicodeEncoding.Unicode.GetBytes("Data to write.");
// Allocate a block of unmanaged memory.
IntPtr memIntPtr = Marshal.AllocHGlobal(text.Length);
// Get a byte pointer from the unmanaged memory block.
byte* memBytePtr = (byte*)memIntPtr.ToPointer();
UnmanagedMemoryStream writeStream =
new UnmanagedMemoryStream(
memBytePtr, text.Length, text.Length, FileAccess.Write);
// Write the data.
WriteToStream(writeStream, text);
// Close the stream.
writeStream.Close();
// Create another UnmanagedMemoryStream for reading.
UnmanagedMemoryStream readStream =
new UnmanagedMemoryStream(memBytePtr, text.Length);
// Display the contents of the stream to the console.
PrintStream(readStream);
// Close the reading stream.
readStream.Close();
// Free up the unmanaged memory.
Marshal.FreeHGlobal(memIntPtr);
}
public static void WriteToStream(UnmanagedMemoryStream writeStream, byte[] text)
{
// Verify that the stream is writable:
// By default, UnmanagedMemoryStream objects do not have write access,
// write access must be set explicitly.
if (writeStream.CanWrite)
{
// Write the data, byte by byte
for (int i = 0; i < writeStream.Length; i++)
{
writeStream.WriteByte(text[i]);
}
}
}
public static void PrintStream(UnmanagedMemoryStream readStream)
{
byte[] text = new byte[readStream.Length];
// Verify that the stream is writable:
// By default, UnmanagedMemoryStream objects do not have write access,
// write access must be set explicitly.
if (readStream.CanRead)
{
// Write the data, byte by byte
for (int i = 0; i < readStream.Length; i++)
{
text[i] = (byte)readStream.ReadByte();
}
}
Console.WriteLine(UnicodeEncoding.Unicode.GetString(text));
}
}