C#

Luc Pattyn wrote:

I'd rather use a single Panel

soulidentities wrote:

I want to close all form If I click the cross

using System;
using System.Windows.Forms;

public partial class BaseForm : Form
{
    public BaseForm()
    {
        InitializeComponent();
    }
    public BaseForm(bool showForm1Button)
        : this()
    {
        btnForm1.Visible = showForm1Button;
    }

    private void btnForm1_Click(object sender, EventArgs e)
    {
        BaseForm newBaseForm = new BaseForm(false);
        newBaseForm.FormClosing += new FormClosingEventHandler(newBaseForm_FormClosing);
        newBaseForm.Show();
        Hide();
    }

    void newBaseForm_FormClosing(object sender, FormClosingEventArgs e)
    {
        Close();
    }
}