private void salesButton_Click(object sender, EventArgs e)
{
SalesUI newForm = new SalesUI();
newForm.Show();
this.Hide();
}
private void gotoSalesLinkLabel_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
this.Hide();
SalesUI salesUi = new SalesUI();
salesUi.Closed += (s, args) => this.Close();
salesUi.Show();
//this.Close();
}