C# Issue - Passing Parameters Between Methods

Antony Fox

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'

5 Replies

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Sascha B15y ago
Accepted 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(0,100);

   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 B15y ago
If it helped no problem :D
Antony Fox15y ago
Thank you so much :)
Antony Fox15y ago
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 B15y ago
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?