ListBox Datasource Won't Update (Windows Application)

Question

I've looked through almost every other thread about this topic with zero results. I have a ListBox I'm using for a log display of sorts. The console updates correctly by both displaying the needed information and properly increment the size of the Items list. "Log Beginning" and "Log #2" also display properly in the ListBox. Also, the "Written" state is being reached correctly. Anybody have any ideas?

Here is my code:

public BindingList<string> Items;

public Form1()
    {
        Items = new BindingList<string>();
        Items.Add("Log Beginning");
        InitializeComponent();
        Items.Add("Log #2");
        LBLog.DataSource = Items;
        Connect(); // leads to a websocket delcaration, irrelevant here
    }

...

private void websocket_MessageReceived(object sender, MessageReceivedEventArgs e)
    {
        Console.WriteLine("Received " + sender.ToString() + " : " + e.ToString());

        WriteLog("Log: " + e.ToString());

        Console.WriteLine("Log size: " + Items.Count);


    }
private void WriteLog(String msg)
    {
        Items.Add("test");

        LBLog.DataSource = null; // tried adding these two, shouldn't need for a binding list
        LBLog.DataSource = Items;


        Console.WriteLine("Written");

    }

Sorry, missed that. The code you posted doesn't duplicate the problem then. Are you trying to update that list in a different thread? — LarsTech, Mar 16 '17 at 20:01
Is there some reason the `WriteLog` method never uses the string `msg` passed to it? — JohnG, Mar 17 '17 at 01:15

score 0 · Answer 1 · edited May 23 '17 at 12:09

0

I discovered the issue. I was unknowingly trying to update it from a different thread. This answer helped me solve my problem.

edited May 23 '17 at 12:09

Community

1
1

answered Mar 21 '17 at 20:40

Jeffrey Humphrey

31
2

ListBox Datasource Won't Update (Windows Application)

1 Answers1