private void registrationToolStripMenuItem_Click(object sender, EventArgs e)
{
User_regitration ud = new User_regitration();
ud.ShowDialog();
ud.MdiParent = this;
}
private void fggfToolStripMenuItem_Click(object sender, EventArgs e)
{
User_regitration user = new User_regitration();
user.ShowDialog();
}
private void toolStripButton4_Click(object sender, EventArgs e)
{
User_regitration user = new User_regitration();
user.ShowDialog();
}