How To Create Remote Desktop Application In C#

C# Remote desktop application using RDP. How to generate the certificate ?

I have some problems to use the MSTSCLib to connect from 1 PC to another one.

It's working with Servers but not with normal Workstations...

                                          private                void                btn_connect_Click(                  object                  sender, EventArgs e)              {              try              {             rdp_control.Server = tbx_servername.Text;             rdp_control.Connect();             tabPage1.Text =              "Connected";         }         catch (Exception exp)         {             MessageBox.Show(exp.ToString());         }     }                              private                void                btn_disconnect_Click(                  object                  sender, EventArgs e)              {              if              (rdp_control.Connected.ToString() ==              "1")         {             rdp_control.Disconnect();         }     }

Both client and server applications are in the Same Network under the same NAT. Problem is the certificate,... I need to find a way to include the certificate. With the normal Remote Desktop from Windows, you see a MessageBox with the question:"Do you want to use this certificate.... blablabla" But this is not coming up with the RDP function in c#

Any Ideas? Thanks B.R.

Answer #1:

Following code shows a simple RDP client and server.

RDP Server

                      using            System;            using            System.Collections.Generic;            using            System.ComponentModel;            using            System.Data;            using            System.Drawing;            using            System.Linq;            using            System.Text;            using            System.Threading.Tasks;            using            System.Windows.Forms;            using            RDPCOMAPILib;            using            AxMSTSCLib;            using            System.Runtime.InteropServices;            namespace            TCP_to_RDP_Converter            {            public            partial            class            Form1            :            Form            {            public            static            RDPSession currentSession =            null;                          public              static              void              createSession()            {             currentSession =            new            RDPSession();         }                          public              static              void              Connect(RDPSession session)            {             session.OnAttendeeConnected += Incoming;             session.Open();         }                          public              static              void              Disconnect(RDPSession session)            {             session.Close();         }                          public              static              string              getConnectionString(RDPSession session, String authString,                string                group,                string                password,                int                clientLimit)            {             IRDPSRAPIInvitation invitation =                 session.Invitations.CreateInvitation                 (authString,            group, password, clientLimit);            return            invitation.ConnectionString;         }                          private              static              void              Incoming(                object                Guest)            {             IRDPSRAPIAttendee MyGuest = (IRDPSRAPIAttendee)Guest;             MyGuest.ControlLevel = CTRL_LEVEL.CTRL_LEVEL_INTERACTIVE;         }                          ///              <summary>                                      ///              Handle the form items                          ///              </summary>                                      public              Form1()            {             InitializeComponent();         }                          private              void              button1_Click(                object                sender, EventArgs e)            {             createSession();             Connect(currentSession);             textConnectionString.Text = getConnectionString(currentSession,            "Test","Group","",5);         }                          private              void              button2_Click(                object                sender, EventArgs e)            {             Disconnect(currentSession);         }       } }

In order to use the RDP communication library you need to add rdpcompapi and Microsoft windows terminal services, form the COM references.

RDP Client

                      using            System;            using            System.Collections.Generic;            using            System.ComponentModel;            using            System.Data;            using            System.Drawing;            using            System.Linq;            using            System.Text;            using            System.Threading.Tasks;            using            System.Windows.Forms;            using            RDPCOMAPILib;            using            AxRDPCOMAPILib;            namespace            Simple_RDP_Client            {            public            partial            class            Form1            :            Form            {                          public              Form1()            {             InitializeComponent();         }                          public              static              void              Connect(                string                invitation, AxRDPViewer display,                string                userName,                string                password)            {             display.Connect(invitation, userName, password);         }                          public              static              void              disconnect(AxRDPViewer display)            {             display.Disconnect();         }                          private              void              button1_Click(                object                sender, EventArgs e)            {            try            {                  Connect(textConnectionString.Text,            this.axRDPViewer,            "",            "");             }             catch (Exception)             {                 MessageBox.Show("Unable to connect to the Server");             }         }     } }

you can add reference to the AxRDPCOMAPILib by importing RDP viewer class component to the main form.

Full project can be downloaded from here [Download]:http://sandaruwmp.blogspot.com/2014/05/remote-desktop-application-with-rdp.html

Answer #2:

use this....

                      using            System;            using            System.Collections.Generic;            using            System.ComponentModel;            using            System.Data;            using            System.Drawing;            using            System.Linq;            using            System.Text;            using            System.Threading.Tasks;            using            System.Windows.Forms;            using            MSTSCLib;            namespace            RemoteTool            {            public            partial            class            Form1            :            Form            {                          public              Form1()            {             InitializeComponent();         }                          private              void              button1_Click(                object                sender, EventArgs e)            {             MSTerminalServiceControl1.Server = textBox1.Text;             MSTerminalServiceControl1.UserName = textBox2.Text;             IMsTscNonScriptable secured = (IMsTscNonScriptable)MSTerminalServiceControl1.GetOcx();             secured.ClearTextPassword = textBox3.Text;             MSTerminalServiceControl1.Connect();         }                          private              void              button2_Click(                object                sender, EventArgs e)            {             MSTerminalServiceControl1.Disconnect();         }     } }