C# Issue - Passing Parameters Between Methods

Question

I want to pass the value of variable r into the button1_click method. I have attatched my code

I keep getting this error > Error 1 No overload for 'button1_Click' matches delegate 'System.EventHandler'

Attachment: source.zip

Sascha B · Answer

You use visual studio? If so double click on you button which you placed on your form1 and paste your code in it int ans = Convert.ToInt32(textBox1.Text); int area = rr * rr; if (ans == area) { label2.Text = Correct; } else { label2.Text = Incorrect; } and writer above public Form1() int r = 0; and in your Form1_load area paste this code Random myRandom = new Random(); r = myRandom.Next(0100); label1.Text = Please Calculate The Area Of A Square With Side Length + r.ToString(); Now your r variable is global and you don't have to parse it to your button click event

Sascha B · Answer

If it helped no problem :D

Antony Fox · Answer

Thank you so much :)

Antony Fox · Answer

Yeah i just changed them to see if i could get it working. I have put them back to normal and i still get the same error.

Sascha B · Answer

Correct me if I'm wrong but your button_Click event isn't connected to your button. It is just a method. normally it says something like this private void button1_Click(object sender EventArgs e) {} Did you just changed the parameters? If so you have to add this method to the button class. If not. Why not using the r variable global and asking for it in the normal button click event?