private void RegisButton_Click(object sender, EventArgs e)
{
string regis = "r";
AddDeveloper developer = new AddDeveloper(regis);
developer.ShowDialog();
}
private void AddDeveloper_Click(object sender, EventArgs e)
{
AddDeveloper developer = new AddDeveloper("");
developer.ShowDialog();
ShowDevelopers_Click(sender, e);
}