未处理 System.AccessViolationException Message:尝试读取或写入受保护的内存。这通常指示其他内存已损坏。

南宫萧尘 2012-07-25 03:32:31
今天把公司一个winform的程序移植到web上面，因为有些数据，通过软件麻烦，直接web展示方便，没想到出现这种情况，各位帮小弟看看到底是哪里出错了：
先贴上winform的代码：
这个是类文件：RDCAPI.cs
代码：
using System;

using System.Collections;

using System.Configuration;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

using System.Globalization;

using YD_EMS;

using System.Net.Sockets;

using System.Net;

using System.Text;



// 实时数据回传  回调函数

public delegate int RDC_VarOk(

                                IntPtr handle,

                                string lpszDbVarName,

                                string lpszVal,

                                string lpszdateTime,

                                int dwUserData //  

                                );



namespace YD_EMS

{

    public partial class testApi : System.Web.UI.Page

    {

        IntPtr m_handle;//句柄



        string strIP = "127.0.0.1"; //访问IP



        int nPort = 8109;  //端口





        

        protected void Page_Load(object sender, EventArgs e)

        {

           



        }

        

        private int GetData(IntPtr handle,

                               string lpszDbVarName,

                               string lpszVal,

                               string lpszdateTime,

                               int dwUserData)

           

        {

          if (lpszDbVarName == "d.test1")

                test1.Text = lpszVal;



            if (lpszDbVarName == "d.test2")

                test2.Text = lpszVal;



            if (lpszDbVarName == "d.test3")

                test3.Text = lpszVal;





            return 0;

        }

     

        protected void Timer1_Tick(object sender, EventArgs e)

        {

            //此段拿来测试页面刷新的，可以忽略。

            string str = DateTime.Now.ToString("tt") == "上午" ? "AM" : "PM";

            lblTime.Text = "当前时间为:" + DateTime.Now.ToString("yyyy年MM月dd日") + "   " +

                 CultureInfo.GetCultureInfo("zh-cn").DateTimeFormat.GetDayName(DateTime.Now.DayOfWeek) + "   " +

                 DateTime.Now.ToLongTimeString() + "   " + str;

            

        }



        protected void Button1_Click(object sender, EventArgs e)

        {

            RDC_VarOk myCallBack = new RDC_VarOk(GetData);

            m_handle = App_Code.RDCAPI.RDC_Open(strIP, nPort, myCallBack, 0);// 打开数据连接

            App_Code.RDCAPI.RDC_AddVar(m_handle, "d,test1", 2);//增加标签

            App_Code.RDCAPI.RDC_AddVar(m_handle, "d,test2", 2);//增加标签

            App_Code.RDCAPI.RDC_AddVar(m_handle, "d,test3", 2);//增加标签

            int n = App_Code.RDCAPI.RDC_StartRun(m_handle);

        }



        //**********************

        // 连接

        //**********************

        private static Socket ConnectSocket(string server, int port)

        {

            Socket socket = null;



            IPHostEntry iphostentry = null;



            foreach (IPAddress address in iphostentry.AddressList)

            {



                IPEndPoint IPEPoint = new IPEndPoint(address, port);



                Socket newSocket = new Socket(IPEPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);



                newSocket.Connect(IPEPoint);



                if (newSocket.Connected)

                {

                    socket = newSocket;

                    break;

                }

                else

                {

                    continue;

                }



            }

            return socket;

        }



        //**********************

        // 发送与接收

        //**********************



        private static string SocketSendReceive(string server, int port)

        {

            string request = "get var name";



            Byte[] btSend = Encoding.ASCII.GetBytes(request);



            Byte[] btReceived = new Byte[256];



            Socket socket = ConnectSocket(server, port);



            if (socket == null)

                return ("连接失败");



            socket.Send(btSend, btSend.Length, 0);



            int intContent = 0;



            string strContent = "";



            do

            {

                intContent = socket.Receive(btReceived, btReceived.Length, 0);



                strContent += Encoding.ASCII.GetString(btReceived, 0, intContent);



            }

            while (intContent > 0);



            return strContent;



        }



    }

}

winform窗口文件：Form1.cs
代码：
using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Net.Sockets;

using System.Net;

using System.Runtime.InteropServices;

using System.IO;



// 实时数据回传  回调函数

public delegate int RDC_VarOk(

                                IntPtr handle,

                                string lpszDbVarName,

                                string lpszVal,

                                string lpszdateTime,

                                int dwUserData //  

                                );



namespace WindowsFormsApplication6

{



    public partial class Form1 : Form

    {







        IntPtr m_handle;



        string strIP = "127.0.0.1";



        int nPort = 8109;



        public Form1()

        {

            InitializeComponent();



        }

        private void Form1_FormClosed(object sender, FormClosedEventArgs e)

        {

            WindowsFormsApplication6.dll.RDCAPI.RDC_StopRun(m_handle);

            WindowsFormsApplication6.dll.RDCAPI.RDC_Close(m_handle);

        }



        private void button6_Click(object sender, EventArgs e)//点击开始自动更新数据

        {





            RDC_VarOk myCallBack = new RDC_VarOk(GetData);



            m_handle = WindowsFormsApplication6.dll.RDCAPI.RDC_Open(strIP, nPort, myCallBack, 0);





            WindowsFormsApplication6.dll.RDCAPI.RDC_AddVar(m_handle, "d.test1", 2);

            WindowsFormsApplication6.dll.RDCAPI.RDC_AddVar(m_handle, "d.test2", 2);

            WindowsFormsApplication6.dll.RDCAPI.RDC_AddVar(m_handle, "d.test3", 2);



            int n = WindowsFormsApplication6.dll.RDCAPI.RDC_StartRun(m_handle);



        }

        private int GetData(IntPtr handle,

                                string lpszDbVarName,

                                string lpszVal,

                                string lpszdateTime,

                                int dwUserData)

        {

            if (lpszDbVarName == "d.test1")

            textBox1.Text = lpszVal;



            if (lpszDbVarName == "d.test2")

             textBox2.Text = lpszVal;



            if (lpszDbVarName == "d.test3")

                textBox3.Text = lpszVal;





            return 0;



        }

        

        }

        

     }



//**********************

// 连接

//**********************

        private static Socket ConnectSocket(string server, int port)

        {

            Socket socket = null;



            IPHostEntry iphostentry = null;



            foreach (IPAddress address in iphostentry.AddressList)

            {



                IPEndPoint IPEPoint = new IPEndPoint(address,port);



                Socket newSocket = new Socket(IPEPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);



                newSocket.Connect(IPEPoint);



                if (newSocket.Connected)

                {

                    socket = newSocket;

                    break;

                }

                else

                {

                    continue;

                }





               



            }

            return socket;

        }



//**********************

// 发送与接收

//**********************



            private static string SocketSendReceive(string server,int port)

            {

                string request="get var name";



                Byte[] btSend=Encoding.ASCII.GetBytes(request);



                Byte[] btReceived =new Byte[256];



                Socket socket=ConnectSocket(server,port);



                if(socket==null)

                   return ("连接失败");



                socket.Send(btSend,btSend.Length,0);



                int intContent=0;



                string strContent="";



                do

                {

                    intContent =socket.Receive(btReceived,btReceived.Length,0);



                    strContent+=Encoding.ASCII.GetString(btReceived,0,intContent);



                }

                while(intContent>0);



                return strContent;



            }



                  

    }

}
以上的在winform的项目里面运行至正常的

下面是我移植到web上面的时候的代码，其中类文件RDCAPI.cs不变，代码也一样；

这个是web页面名称：testApi.aspx
页面代码（采用页面无刷新效果，因为采集的数据是实时更新的，需要定时刷新）：
由于字数限制，我把代码贴在一楼

DeBug项目的时候，报错如下：
未处理 System.AccessViolationException
Message: 尝试读取或写入受保护的内存。这通常指示其他内存已损坏。
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cl2636026900 2014-02-25
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你牛，写这么多谁会逐句看
南宫萧尘 2012-07-25
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都没有人理我的？
南宫萧尘 2012-07-25
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这里是CS文件的代码：

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Globalization;
using YD_EMS;
using System.Net.Sockets;
using System.Net;
using System.Text;




// 实时数据回传 回调函数
public delegate int RDC_VarOk(
IntPtr handle,
string lpszDbVarName,
string lpszVal,
string lpszdateTime,
int dwUserData //
);


namespace YD_EMS
{
public partial class testApi : System.Web.UI.Page
{
IntPtr m_handle;//句柄

string strIP = "127.0.0.1"; //访问IP

int nPort = 8109; //端口



protected void Page_Load(object sender, EventArgs e)
{


}



private int GetData(IntPtr handle,
string lpszDbVarName,
string lpszVal,
string lpszdateTime,
int dwUserData)

{


if (lpszDbVarName == "d.test1")
test1.Text = lpszVal;

if (lpszDbVarName == "d.test2")
test2.Text = lpszVal;

if (lpszDbVarName == "d.test3")
test3.Text = lpszVal;


return 0;
}

protected void Timer1_Tick(object sender, EventArgs e)
{
//此段拿来测试页面刷新的，可以忽略。
string str = DateTime.Now.ToString("tt") == "上午" ? "AM" : "PM";
lblTime.Text = "当前时间为:" + DateTime.Now.ToString("yyyy年MM月dd日") + "   " +
CultureInfo.GetCultureInfo("zh-cn").DateTimeFormat.GetDayName(DateTime.Now.DayOfWeek) + "   " +
DateTime.Now.ToLongTimeString() + "   " + str;

}

protected void Button1_Click(object sender, EventArgs e)
{
RDC_VarOk myCallBack = new RDC_VarOk(GetData);
m_handle = App_Code.RDCAPI.RDC_Open(strIP, nPort, myCallBack, 0);// 打开数据连接
App_Code.RDCAPI.RDC_AddVar(m_handle, "d,test1", 2);//增加标签
App_Code.RDCAPI.RDC_AddVar(m_handle, "d,test2", 2);//增加标签
App_Code.RDCAPI.RDC_AddVar(m_handle, "d,test3", 2);//增加标签
int n = App_Code.RDCAPI.RDC_StartRun(m_handle);
}

//**********************
// 连接
//**********************
private static Socket ConnectSocket(string server, int port)
{
Socket socket = null;

IPHostEntry iphostentry = null;

foreach (IPAddress address in iphostentry.AddressList)
{

IPEndPoint IPEPoint = new IPEndPoint(address, port);

Socket newSocket = new Socket(IPEPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);

newSocket.Connect(IPEPoint);

if (newSocket.Connected)
{
socket = newSocket;
break;
}
else
{
continue;
}

}
return socket;
}

//**********************
// 发送与接收
//**********************

private static string SocketSendReceive(string server, int port)
{
string request = "get var name";

Byte[] btSend = Encoding.ASCII.GetBytes(request);

Byte[] btReceived = new Byte[256];

Socket socket = ConnectSocket(server, port);

if (socket == null)
return ("连接失败");

socket.Send(btSend, btSend.Length, 0);

int intContent = 0;

string strContent = "";

do
{
intContent = socket.Receive(btReceived, btReceived.Length, 0);

strContent += Encoding.ASCII.GetString(btReceived, 0, intContent);

}
while (intContent > 0);

return strContent;

}

}
}
南宫萧尘 2012-07-25
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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="testApi.aspx.cs" Inherits="YD_EMS.testApi" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
<script type="text/javascript">

function pageLoad() {
}

</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server" />
</div>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Label ID="Label1" runat="server" Text="test1"></asp:Label>
<asp:Label ID="test1" runat="server" Text="Label"></asp:Label>
<br />
<asp:Label ID="Label3" runat="server" Text="test2"></asp:Label>
<asp:Label ID="test2" runat="server" Text="Label"></asp:Label>
<br />
<asp:Label ID="Label5" runat="server" Text="test3"></asp:Label>
<asp:Label ID="test3" runat="server" Text="Label"></asp:Label>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="更新数据" />
<br />
<asp:Label ID="Label6" runat="server" Text="测试时间"></asp:Label>
<asp:Label ID="lblTime" runat="server" Text="testTime"></asp:Label>
<asp:Timer ID="Timer1" runat="server" Interval="1000" ontick="Timer1_Tick">
</asp:Timer>
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>
System.AccessViolationException: 尝试读取或写入受保护的内存。这通常指示其他内存已损坏
之前也遇到过这样的问题，一直未...以后报错，System.AccessViolationException: 尝试读取或写入受保护的内存。这通常指示其他内存已损坏，网上搜了很多都没有作用。 然后我发现 连接本地数据库是好的，连接远程数据库
System.AccessViolationException: 尝试读取或写入受保护的内存
System.AccessViolationException: 尝试读取或写入受保护的内存
解决System.AccessViolationException: 尝试读取或写入受保护的内存。这通常指示其他内存已损坏。
System.AccessViolationException: 尝试读取或写入受保护的内存。这通常指示其他内存已损坏。 网上查了半天，重装了系统都没能解决，后来仔细看了一下错误信息，发现是在System.Draw这块就出了问题，猜想会不会是...
窗体控件的System.AccessViolationException: 尝试读取或写入受保护的内存解决方案。
前段时间维护公司一个小程序时，在窗体添加...System.AccessViolationException: 尝试读取或写入受保护的内存解决方案。 static class Program { private static Form1 M_WinForm; /// /// 应用程序的主入口点。
System.AccessViolationException:“尝试读取或写入受保护的内存。这通常指示其他内存已损坏。”
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