RT
我之前做了一个共享内存的类（其实也是从坛子上copy的），然后用wpf做了一个共享的程序。我多开这个程序，可以共享操作共享的内存。
今天做了一个asp.net的网页，也引用了那个泪，结果泪奔了，不能共享。如果我已经打开了一个wpf程序，那么asp的初始化就失败，如果先打开了asp的网页，那么wpf的程序也会初始化失败。。
泪奔涌ing......
有懂的大大指点迷津啊，，，不知道asp.net程序和wpf可不可以实现共享，如可以，请赐神码。
我之前做了一个共享内存的类（其实也是从坛子上copy的），然后用wpf做了一个共享的程序。我多开这个程序，可以共享操作共享的内存。
今天做了一个asp.net的网页，也引用了那个泪，结果泪奔了，不能共享。如果我已经打开了一个wpf程序，那么asp的初始化就失败，如果先打开了asp的网页，那么wpf的程序也会初始化失败。。
泪奔涌ing......
有懂的大大指点迷津啊，，，不知道asp.net程序和wpf可不可以实现共享，如可以，请赐神码。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using ShareMemLib;
using System.Windows.Threading;namespace WpfApplication2
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DispatcherTimer time = new DispatcherTimer();
//string str = comboBox1.SelectionBoxItem.ToString();
//double dd = Convert.ToDouble(comboBox1.SelectionBoxItem.ToString());
time.Interval = TimeSpan.FromSeconds(1); //设置刷新的间隔时间
time.Tick += new EventHandler(timer_Tick);
time.Start();
}
void timer_Tick(object sender, EventArgs e)
{
string str="";
byte[] bytData = new byte[16];
ShareMem MemDB = new ShareMem();
MemDB.Init("YFMemTest", 10240);
MemDB.Read(ref bytData, 0, 16);
if (chkWrite.IsChecked == true)
{
for (int i = 0; i < 16; i++)
{
bytData[i] += 1;
if (bytData[i] > 200)
{
bytData[i] -= 200;
}
}
MemDB.Write(bytData, 0, 16);
MemDB.Read(ref bytData, 0, 16);
//textBox1.Clear();
for (int i = 0; i < 16; i++)
{
//string str;
str += bytData[i].ToString() + "-";
}
str += "\r\n";
textBox1.Text = str + textBox1.Text;
}
} private void button1_Click(object sender, RoutedEventArgs e)
{
ShareMem MemDB = new ShareMem();
string str = "";
if (MemDB.Init("YFMemTest", 10240) != 0)
{
//初始化失败
MessageBox.Show("初始化失败");
}
else
{
byte[] bytData = new byte[16];
//string str = "";
int intRet = MemDB.Read(ref bytData, 0, 16);
//textBox1.Clear();
if (intRet == 0)
{
for (int i = 0; i < 16; i++)
{
bytData[i] += 10;
if (bytData[i] > 200)
{
bytData[i] -= 200;
}
}
MemDB.Write(bytData, 0, 16);
MemDB.Read(ref bytData, 0, 16);
for (int i = 0; i < 16; i++)
{
//string str;
str += bytData[i].ToString() +"-" ;
}
str += "\r\n";
textBox1.Text = str + textBox1.Text;
}
}
} }
}
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;namespace ShareMemLib
{
public class ShareMem
{
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr SendMessage(IntPtr hWnd, int Msg, int wParam, IntPtr lParam); [DllImport("Kernel32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr CreateFileMapping(int hFile, IntPtr lpAttributes, uint flProtect, uint dwMaxSizeHi, uint dwMaxSizeLow, string lpName); [DllImport("Kernel32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr OpenFileMapping(int dwDesiredAccess, [MarshalAs(UnmanagedType.Bool)] bool bInheritHandle, string lpName); [DllImport("Kernel32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr MapViewOfFile(IntPtr hFileMapping, uint dwDesiredAccess, uint dwFileOffsetHigh, uint dwFileOffsetLow, uint dwNumberOfBytesToMap); [DllImport("Kernel32.dll", CharSet = CharSet.Auto)]
public static extern bool UnmapViewOfFile(IntPtr pvBaseAddress); [DllImport("Kernel32.dll", CharSet = CharSet.Auto)]
public static extern bool CloseHandle(IntPtr handle); [DllImport("kernel32", EntryPoint = "GetLastError")]
public static extern int GetLastError(); const int ERROR_ALREADY_EXISTS = 183; const int FILE_MAP_COPY = 0x0001;
const int FILE_MAP_WRITE = 0x0002;
const int FILE_MAP_READ = 0x0004;
const int FILE_MAP_ALL_ACCESS = 0x0002 | 0x0004; const int PAGE_READONLY = 0x02;
const int PAGE_READWRITE = 0x04;
const int PAGE_WRITECOPY = 0x08;
const int PAGE_EXECUTE = 0x10;
const int PAGE_EXECUTE_READ = 0x20;
const int PAGE_EXECUTE_READWRITE = 0x40; const int SEC_COMMIT = 0x8000000;
const int SEC_IMAGE = 0x1000000;
const int SEC_NOCACHE = 0x10000000;
const int SEC_RESERVE = 0x4000000; const int INVALID_HANDLE_VALUE = -1; IntPtr m_hSharedMemoryFile = IntPtr.Zero;
IntPtr m_pwData = IntPtr.Zero;
bool m_bAlreadyExist = false;
bool m_bInit = false;
long m_MemSize = 0; public ShareMem()
{
}
~ShareMem()
{
Close();
} ///
/// 初始化共享内存
///
/// 共享内存名称
/// 共享内存大小
///
public int Init(string strName, long lngSize)
{
if (lngSize <= 0 || lngSize > 0x00800000) lngSize = 0x00800000;
m_MemSize = lngSize;
if (strName.Length > 0)
{
//创建内存共享体(INVALID_HANDLE_VALUE)
m_hSharedMemoryFile = CreateFileMapping(INVALID_HANDLE_VALUE, IntPtr.Zero, (uint)PAGE_READWRITE, 0, (uint)lngSize, strName);
if (m_hSharedMemoryFile == IntPtr.Zero)
{
m_bAlreadyExist = false;
m_bInit = false;
return 2; //创建共享体失败
}
else
{
if (GetLastError() == ERROR_ALREADY_EXISTS) //已经创建
{
m_bAlreadyExist = true;
}
else //新创建
{
m_bAlreadyExist = false;
}
}
//---------------------------------------
//创建内存映射
m_pwData = MapViewOfFile(m_hSharedMemoryFile, FILE_MAP_WRITE, 0, 0, (uint)lngSize);
if (m_pwData == IntPtr.Zero)
{
m_bInit = false;
CloseHandle(m_hSharedMemoryFile);
return 3; //创建内存映射失败
}
else
{
m_bInit = true;
if (m_bAlreadyExist == false)
{
//初始化
}
}
//----------------------------------------
}
else
{
return 1; //参数错误
} return 0; //创建成功
}
///
/// 关闭共享内存
///
public void Close()
{
if (m_bInit)
{
UnmapViewOfFile(m_pwData);
CloseHandle(m_hSharedMemoryFile);
}
} ///
/// 读数据
///
/// 数据
/// 起始地址
/// 个数
///
public int Read(ref byte[] bytData, int lngAddr, int lngSize)
{
if (lngAddr + lngSize > m_MemSize) return 2; //超出数据区
if (m_bInit)
{
Marshal.Copy(m_pwData, bytData, lngAddr, lngSize);
}
else
{
return 1; //共享内存未初始化
}
return 0; //读成功
} ///
/// 写数据
///
/// 数据
/// 起始地址
/// 个数
///
public int Write(byte[] bytData, int lngAddr, int lngSize)
{
if (lngAddr + lngSize > m_MemSize) return 2; //超出数据区
if (m_bInit)
{
Marshal.Copy(bytData, lngAddr, m_pwData, lngSize);
}
else
{
return 1; //共享内存未初始化
}
return 0; //写成功
}
}
}