Help with adding items to a listview using C#

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Hi,

I'm a beginner and just need some help solving this problem.

I think its simple but have tried to figure it out but im getting no where.
I currently have ArrayList arry_eventss to which
[0] 1998397003
[1] 2

I add data to the listview.
but error in this line
error : System.InvalidOperationException: 'Cross-thread operation not valid: Control 'listView1' accessed from a thread other than the thread it was created on.'

listView1.Items.Add(ftrs.ToString());

i want to output like that

TYPE | STATUS
1998397003 | 2
4548484541 | 5

What I have tried:

public void CB_SubscribeEvent(PLAT_SUBSCRIBE_EVENT_V20 pstEvent, IntPtr pUser)
        {
           ArrayList arry_eventss = new ArrayList();

           arry_eventss.Add(pstEvent.iState);
           arry_eventss.Add(pstEvent.iEventType);
           int c_arry_events = arry_eventss.Count;

           string[] ftrs = new string[c_arry_events];
           for (int j = 0; j < c_arry_events; j++)
           {

               listView1.Items.Clear();

               ftrs[j] = arry_eventss[j].ToString();

           }
           listView1.Items.Add(ftrs.ToString());
         }

Posted 14-Mar-18 2:27am

Gaurav Patil

Updated 14-Mar-18 2:56am

v3

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TheRealSteveJudge · Answer 1 · 2018-03-14T02:57:00

If you are using Windows Forms
you should read this article:
Using the Invoke Design Pattern with Anonymous Methods[^]

e.g.

Invoke(new MethodInvoker(
        delegate { listView1.Items.Add(ftrs.ToString()); }
    ));
}

if you are using WPF you should read this:
Update a WPF UI from Another Thread – Stephen Haunts { Coding in the Trenches }[^]

e.g.

Application.Current.Dispatcher.Invoke(() =>
{
    listView1.Items.Add(ftrs.ToString());
});