[help] Process Handle and multithreading

**Myryador** · 11-02-2011

[c#]

Hello guys,

I tried last days, 6 full days exactly, to solve my problem , no succes.

On mostly examples here and on the web we can see that :

[samevoid,except statics]
Open Process
Read,Write .....
Close Handle

But i need to acces to the process into 3 threads , but when i try, sometime that's say "Process Not opened" .

That's not the real code , it's just to give a idea of what i mean.

Code:

    public partial class Test : Form
    {

        public IntPtr Process;

        private void Test_Load(object sender, EventArgs e)
        {
                 Process[] processes = Process.GetProcessesByName("wow");
                 OpenProcess(DesiredAccess, 0, Process[0])
                 new Thread(new ThreadStart(ThreadTest1));
                 new Thread(new ThreadStart(ThreadTest2));
                 new Thread(new ThreadStart(ThreadTest3));
                 new Thread(new ThreadStart(ThreadTest4));
        }


        public void ThreadTest1()
        {
            Log("Thread 1" + Convert.ToString(CheckIntPtrProcessOpened(Process)))
        }
        public void ThreadTest2()
        {
            Log("Thread 2" + Convert.ToString(CheckIntPtrProcessOpened(Process)))
        }
        public void ThreadTest3()
        {
            Log("Thread 3" + Convert.ToString(CheckIntPtrProcessOpened(Process)))
        }
        public void ThreadTest4()
        {
            Log("Thread 4" + Convert.ToString(CheckIntPtrProcessOpened(Process)))
        }

    }

First Test Result :

Code:

Thread 1True
Thread 4False
Thread 2False
Thread 3False

Second Test Result :

Code:

Thread 3True
Thread 4true
Thread 2False
Thread 1False

Third Test Result :

Code:

Thread 3False
Thread 4False
Thread 2False
Thread 1False

So, that suck a lot , and i not understand why sometime all is well , sometime not ......
I really hope someone have an issue, i spent 6days on .........

Thanks