Ronnie
Ronnie
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CC#
Created by Ronnie on 6/30/2023 in #help
send a response from TCP server to client
Exception says that objektreference is null Initiates these directly in Form 
c#
TcpListener _lyssnare;
TcpClient _klient;
int _port = 12345;
IPAddress _ipAddress = IPAddress.Parse("127.0.0.1");
bool _ärServerIgång;
Kodhanterare _kodhanterare = new Kodhanterare();
c#
TcpListener _lyssnare;
TcpClient _klient;
int _port = 12345;
IPAddress _ipAddress = IPAddress.Parse("127.0.0.1");
bool _ärServerIgång;
Kodhanterare _kodhanterare = new Kodhanterare();
Starts server 
c#
  public async void StartaServer()
    {
      try
      {
      _lyssnare = new TcpListener(_ipAddress, _port);
      _lyssnare.Start();
      _ärServerIgång = true;


      /// <summary>
      /// Väntar på meddelande
      /// </summary>
      try
      {
        lbl_info.Text = "väntar på koppling...";
        _klient = await _lyssnare.AcceptTcpClientAsync();
      }
      catch (ObjectDisposedException ex)
      {
      return;
      }
      lbl_info.Text = "kopplad till klient";
      StartaLäsning(_klient);
      }
      catch (Exception error)
      {
        MessageBox.Show(error.Message); return;
      }
      }
c#
  public async void StartaServer()
    {
      try
      {
      _lyssnare = new TcpListener(_ipAddress, _port);
      _lyssnare.Start();
      _ärServerIgång = true;


      /// <summary>
      /// Väntar på meddelande
      /// </summary>
      try
      {
        lbl_info.Text = "väntar på koppling...";
        _klient = await _lyssnare.AcceptTcpClientAsync();
      }
      catch (ObjectDisposedException ex)
      {
      return;
      }
      lbl_info.Text = "kopplad till klient";
      StartaLäsning(_klient);
      }
      catch (Exception error)
      {
        MessageBox.Show(error.Message); return;
      }
      }
Sends back response 
c#
public async void StartaSändning(string meddelande)
{
// _klient in here is NULL despite initiated in Form and "used" in StartServer()

byte[] utdata = Encoding.Unicode.GetBytes(meddelande);
    try
    {
      await _klient.GetStream().WriteAsync(utdata, 0, utdata.Length);
      }
      catch (Exception error) 
      { MessageBox.Show(error.Message); return; }
}
c#
public async void StartaSändning(string meddelande)
{
// _klient in here is NULL despite initiated in Form and "used" in StartServer()

byte[] utdata = Encoding.Unicode.GetBytes(meddelande);
    try
    {
      await _klient.GetStream().WriteAsync(utdata, 0, utdata.Length);
      }
      catch (Exception error) 
      { MessageBox.Show(error.Message); return; }
}
17 replies
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String vectors in list? not sure what its called
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Forcing user to choose 1, 2 or 3
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Created by Ronnie on 3/9/2023 in #help
Can someone explain what the code does step by step?
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Created by Ronnie on 12/13/2022 in #help
Search generic list for a searchword
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Created by Ronnie on 12/13/2022 in #help
Remove or overwrite single element of list of arrays
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CC#
Created by Ronnie on 12/12/2022 in #help
❔ Basic question on linear search in list
Hello, I am making a blog/notebook for an assignment and I have a list which contains vectors with 3 elements, title/date/body - i need to do a linear search for a title but I cant find any information on how to loop through the first element on all the vectors in the list, any ideas? Also, i have a DateTime-variable that is declared in the switch function, do i need to declare this at the top before using in Case 1?` Help much appreciated : - P
15 replies