Why is this "if" condition evaluating to "false"? [closed]

Why is my program returning "Code is invalid" when i have set entered a valid code and have set my form1 background to Color.Green?

private void checkNumber_Click(object sender, EventArgs e) { string userInput = correctNumber.Text; if (userInput == Form1.num && BackColor == Color.Green) { MessageBox.Show("Code is valid"); } else { MessageBox.Show("Code is invalid"); } }