create a array of Control and raise events

anirudh saraf

Hi,

I am new to VC # and I am stuck as to how to create an array of objects like the treeview programmatically.

After I create it programmatically using the new statement, how do I write events for it and figure out which index of the control raised the event?

treeNB[i] = new System.Windows.Forms.TreeView();

how do I create events for the treeNB object and then use some sort of index property?

Thanks a lot for the help.

Anirudh

2 Replies

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anirudh saraf19y ago
Hi Alan,

Thanks for the response. It works like a charm :).

Thanks,
Anirudh
Alan19y ago
I'd start by giving each TreeView a name corresponding to its index in the array and linking them all up to the same eventhandler, like this:

for (int i = 0; i < numTreeViews; i++)
{
     treeNB[i] = new System.Windows.Forms.TreeView();
     treeNB[i].Name = "treeNB" + i.ToString();
     treeNB[i].AfterSelect += new TreeviewEventHandler(TreeNB_AfterSelect);
}

You can then figure out which Treeview caused the event like this:

private void TreeNB_AfterSelect(System.Object sender,
    System.Windows.Forms.TreeViewEventArgs e)
{
     TreeView treeNB = (TreeView)sender;
     int tbIndex = int.Parse(treeNB.Name.Substring(6));
     // so treeNB[tbIndex] caused the event
     // other code
}