C# 中远程桌面连接出现奇怪的 H_RESULT E_FAIL 错误

Question

我正在使用 C# 中的 com 组件 Microsoft RDP Client Control 版本 8 连接到终端服务器和远程桌面。

代码如下所示：

if (rdp.Connected.ToString() == "1")
{
  rdp.Disconnect();
}
rdp.Server = userDetails.RoleMachine;
rdp.UserName = userDetails.UserName;
IMsTscNonScriptable secured = (IMsTscNonScriptable)rdp.GetOcx();
secured.ResetPassword();
secured.ClearTextPassword = userDetails.Password;

这第一次适用于远程桌面或终端服务服务器，但在后续调用中失败并出现“H_RESULT E_FAIL”错误，下面的堆栈跟踪。

如何允许某人从同一个表单重新连接到其他地方（即在更改属性和尝试 connect() 之前我需要清理什么？）

at MSTSCLib.IMsRdpClient7.set_Server(String pServer)
at AxMSTSCLib.AxMsRdpClient7.set_Server(String value)
at RDP.FrmRemote.Connect() in \\..\FrmRemote.cs:line 56
at RDP.FrmRemote.Operations1_Click(Object sender, EventArgs e) in  \\...\FrmRemote.cs:line 157
at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
at System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32  clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ToolStrip.WndProc(Message& m)
at System.Windows.Forms.ToolStripDropDown.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)

Answer 1

答案很简单。

对 Disconnect() 的调用是异步的。

我必须处理 ActiveX 控件的 OnDisconnect 事件，而不是在它触发之前再次尝试 Connect()，例如完全断开连接。