C#

TabPage page = new TabPage(lbServers.SelectedItem.ToString());
                page.Name = lbServers.SelectedItem.ToString();
                tabControl1.TabPages.Add(page);
                tabControl1.SelectedTab = page;

                AxMsRdpClient9NotSafeForScripting rdpWindows = new AxMsRdpClient9NotSafeForScripting();
                rdpWindows.Dock = DockStyle.Fill;
                page.Controls.Add(rdpWindows);

                //rdp settings
                rdpWindows.AdvancedSettings9.NegotiateSecurityLayer = true;
                rdpWindows.AdvancedSettings9.SmartSizing = true;

                //credentials
                rdpWindows.Domain = txtDomain.Text;
                rdpWindows.UserName = txtUser.Text;
                rdpWindows.AdvancedSettings9.ClearTextPassword = txtPass.Text;
                rdpWindows.Server = page.Name;

                //Connect RDP
                rdpWindows.Connect();

Member 11441622 wrote:

AxMsRdpClient9NotSafeForScripting rdpWindows = new AxMsRdpClient9NotSafeForScripting();

rdpWindows.Server = tabControl1.SelectedTab.Name.ToString();
            rdpWindows.Disconnect();

System.Runtime.InteropServices.COMException: 'Error HRESULT E_FAIL has been returned from a call to a COM component.'

Member 11441622 wrote:

rdpWindows.Server = tabControl1.SelectedTab.Name.ToString();
rdpWindows.Disconnect();

Member 11441622 wrote:

AxMsRdpClient9NotSafeForScripting rdpWindows

public class Test1 : ITest
{
    private readonly ManualResetEventSlim _mre;
    
    public Test1(ManualResetEventSlim mre)
    {
        _mre = mre;
    }
    
    public TestResult PerformTest()
    {
        try
        {
            Thread.Sleep(60 * 10 * 1000);
            return TestResult.Failed;
        }
        finally
        {
            _mre.Set();
        }
    }
}

public class Test2 : ITest
{
    private readonly ManualResetEventSlim _mre;
    
    public Test2(ManualResetEventSlim mre)
    {
        _mre = mre;
    }
    
    public TestResult PerformTest()
    {
        Thread.Sleep(60 * 2 * 1000);
        
        // Wait for Test1 to complete:
        _mre.Wait();

        // Do some other stuff here.
        return TestResult.Passed;
    }
}

static class Program
{
    static void Main()
    {
        var mre = new ManualResetEventSlim();
        
        var tests = new List<ITest>
        {
            new Test1(mre),
            new Test2(mre),
        };
        
        var tasks = new List<Task>();
        foreach (ITest test in tests)
        {
            Task task = Task.Run(() => test.PerformTest());
            tasks.Add(task);
        }
        
        Task.WaitAll(tasks.ToArray());
    }
}

public static void Thread_test() 
{
    sem.Wait();
    
    int result = 0;
    for (int i = 0; i < 1000000; i++)
    {
        result = Interlocked.Increment(compteur);
    }
    
    sem.Release();
    
    System.Console.WriteLine(result);
}