Change the status of a panel within a class

Question

I am having a windows form application which contains a panel. I want to access that panel when I call a specific method in a class file and change the status of the panel to visible.

I tried to create an object of the form within the method and change the status. It does not gives an error, but it does not display the panel.

public class Compare
{
public void Comp(a,b)
{
form1 f=new form1();

if(a<b)
f.panel1.visible=true;
else if(a>b)
f.panel2.visible=true;
else
f.panel3.visible=true;
}
}

Can anyone tell me how to do this in C#?

Thanks in advance.

Frogleg · Answer

In your form public partial class Form1 : Form { Compare cmp = new Compare(); public Form1() { InitializeComponent(); } private void Form1_Load(object sender EventArgs e) { hidePanels(); } public void hidePanels() { panel1.Visible = false; panel2.Visible = false; panel3.Visible = false; } private void button1_Click(object sender EventArgs e) { if (string.IsNullOrEmpty(textBox1.Text) | string.IsNullOrEmpty(textBox2.Text)) { return; } hidePanels(); int a = Convert.ToInt32(textBox1.Text); int b = Convert.ToInt32(textBox2.Text); cmp.Comp(a b panel1 panel2 panel3); } private void textBox1_KeyPress(object sender KeyPressEventArgs e) { if (e.KeyChar '9') { e.Handled = true; } } private void textBox2_KeyPress(object sender KeyPressEventArgs e) { if (e.KeyChar '9') { e.Handled = true; } } } in class using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Forms; namespace HiddenPanels { class Compare { public void Comp(int a int b Panel p1 Panel p2 Panel p3) { if (a { p1.Visible = true; } else if (a > b) { p2.Visible = true; } else { p3.Visible = true; } } } }