Question

I have written a method trial for button btnTrial1:

public void trial(object sender, EventArgs e, Button btn, TextBox txt, Label lbl)
{

}

In my application, i am generating more buttons and textboxes and labels dynamically through code and naming them sequentially like btnTrial2, txtTrial2, lblTrial2 then btnTrial3, txtTrial3, lblTrial3 and so on. Now i want to set trial as EventHandler for btnTrial2 then for btnTrial3 and so on.

So now when i call the method trial from btnTrial1, my parameters should be:

Public void (sender, e, btnTrail1, txtTrial1, lblTrial1)

But when i call the method trial from btnTrial2, my parameters should be:

Public void (sender, e, btnTrail2, txtTrial2, lblTrial2)

and so on…

Answer 1

btnTrial1.YourEvent += (sender, args) => trial(sender, args,
        btnTrial1, txtTrial1, lblTrial1);
btnTrial2.YourEvent += (sender, args) => trial(sender, args,
        btnTrial2, txtTrial2, lblTrial2);

You mention “generating them dynamically” – that is fine, but if you are in a loop you will also need to watch out for the infamous “captured variable / loop” problem – notably, the variables “captured” must be inside the loop; for example:

for(int i = 1 ; i <= 10 ; i++) {
    var btnTrial = ...
    var txtTrial = ...
    var lblTrial = ...
    btnTrial.YourEvent += (sender, args) => trial(sender, args,
        btnTrial, txtTrial, lblTrial);
}

(if, for example, btnTrial was declared outside the loop, bad things would happen)