I am spending some time exploring C#, I found a tutorial online to create a login form and it is all good enough, but when I execute the code, the result is messed up.

Can you help?

This is the design of my form:

This is the code behind:

public partial class Form_LogIn : Form
{
    public Form_LogIn()
    {
        InitializeComponent();
    }

    private void BtLogin_Click(object sender, EventArgs e)
    {
        if (TxtUserName.Text == "My_User" && TxtPassword.Text == "My_Password")
        {
            new FormStart().Show();
            this.Hide();
        }
        else
        {
            MessageBox.Show("User Name or password incorrect, please verify.");
            TxtUserName.Clear();
            TxtPassword.Clear();
            TxtUserName.Focus();
        }
    }

    private void LblCleanFields_Click(object sender, EventArgs e)
    {
        TxtUserName.Clear();
        TxtPassword.Clear();
    }

    private void LblExit_Click(object sender, EventArgs e)
    {
        Application.Exit();
    }
}

This is the result of my execution:

Can you point a direction?