I am creating a winforms app which generates a number of panels at runtime. I want each panel, when clicked, to open a web link.
The panels are generated at runtime:
for (int i = 0; i < meetings.Count(); i++) {
Panel door = new Panel();
door.Location = new System.Drawing.Point((i * 146) + (i * 10) + 10, 10);
door.Size = new System.Drawing.Size(146, 300);
door.BackgroundImage = ConferenceToolkit.Properties.Resources.Door;
door.Click += new EventHandler(door_Click);
Controls.Add(door);
}
and I want the event handler to point to a URL that is stored somehow in the Panel attributes. (On a web form I could use Attributes["myAttribute"] but this doesn't seem to work with WinForms):
private void door_Click(object sender, EventArgs e)
{
Panel p = sender as Panel;
Process.Start(p.Attributes["url"]);
}
There are many options for this, you may store URL in the (unused in Panel
) Text
property:
door.Text = FindUrl(meetings[i]);
Used like:
Process.Start(p.Text);
As alternative you may use general purpose Tag
property:
door.Tag = FindUrl(meetings[i]);
With:
Process.Start(p.Tag.ToString());
Tag property is usually right place for these things and, becauase it's of type object
, you can even use it to store complex types (in case you need more than a simple string).
See also similar posts for slightly more complex cases: this , this and this .
You can store the URL that you want in the Panel's Tag propertie
for example
p.Tag = "www.google.com";
and then you can use it when use cast the Panel in the on click method
reference for the .Tag property
http://msdn.microsoft.com/en-us/library/system.windows.forms.control.tag(v=vs.110).aspx
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