C# 事件处理程序问题更新控件

Question

所以，这是布局：

frmClient = uses frmLogin (LoginWindow) which has OnLoginEvent

此事件由 frmClient 接收，并将更新状态栏（没有调用）

frmClient 还使用了 ClassMatrix（矩阵），它有 OnClientConnectEvent，由 ClassServer 的事件调用

frmClient 正在接收来自 Matrix 的事件 <- ClassServer

但尝试更新状态栏时显示多线程错误

frmClient <- frmLogin's event works to update
frmClient <- Matrix <- Server's event errors with multithread

服务器：

public event EventHandler<string> OnConnectionAcceptedEvent;
protected virtual void ConnectionAccepted(string e) { OnConnectionAcceptedEvent?.Invoke(this, e); }

服务器

Task.Run(new Action(async() =>.....
                        Client = new TcpClient("127.0.0.1", Port);

                        if (ID == 9999)
                        {

                            Guid _guid = Guid.NewGuid();
                            StageOneReaderServerStarted(ID.ToString());
                            ConnectionAccepted(ID.ToString()); // This is the command

                            GuidCreated(_guid.ToString());

                            SentGuid(_guid.ToString());

                            StartedStandardEncryption(ID.ToString());

                            StageTwoReaderServerStarted(ID.ToString());
                       }


    

矩阵：

public event EventHandler<string> ConnectionUpdateEvent;


Servers.Servers[Servers.Servers.FindIndex(f => f.ID == id)].OnConnectionAcceptedEvent += Matrix_OnConnectionAcceptedEvent;


private void Matrix_OnConnectionAcceptedEvent(object sender, string e)
{
    ConnectionUpdateEvent?.Invoke(this, e);
    Console.WriteLine($"Connection Accepted: {e}");
}

客户：

Matrix.ConnectionUpdateEvent += Matrix_ConnectionUpdateEvent;
LoginWindow.OnLogin += LoginWindow_OnLoginEvent;

protected virtual Matrix_ConnectionUpdateEvent(object sender, string e)
{
    statusPanel.Text = "Loggiasfasfasfng in..."; //works
}

protected virtual void LoginWindow_OnLoginEvent(object sender, string data)
{
    statusPanel.Text = "Logging in..."; //works
    Matrix.SentLogin(data);
}

Answer 1

所以，显然状态栏有 .Parent.Invoke / .Parent/InvokeRequired

现在可以了，我花了很长时间才弄清楚

 if (statusPanel.Parent.InvokeRequired)
 {
     statusPanel.Parent.Invoke(new MethodInvoker(delegate { statusPanel.Text = "fffff"; }));
 }