The code is simple:

namespace Textboxta10_karakterde_1_alt_satira_gecen_program
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        int charNumber = 0;
        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (charNumber >= 2)
            {
                MessageBox.Show("Hey");

                if (charNumber % (2) == 0)
                {
                    MessageBox.Show("Hey");

                    textBox1.AppendText(Environment.NewLine);                    
                }

                charNumber  ;
                MessageBox.Show("Hey");
            }
        }
    }
}

It never shows the "Hey" message and it never goes to line below when the charNumber is divisible to 2.

But if I make the code if (charNumber <= 2) instead of if (charNumber >= 2), it does show the "Hey" message as expected and writes the next characters one line below as expected.

I did not understand the problem.

CodePudding user response：

charNumber is initialized to 0 and will never be anything other than 0 with the posted code, since the increment is inside the outer if block, which only runs when charNumber >= 2. Maybe you want charNumber ; outside of that outer if block like this?

int charNumber = 0;
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
    if (charNumber>=2)
    {
        MessageBox.Show("Hey");

        if (charNumber % (2) == 0)
        {
            MessageBox.Show("Hey");

            textBox1.AppendText(Environment.NewLine);                    
        }
        
        MessageBox.Show("Hey");
    }
    charNumber  ;
}