private void ribbonButton1_Click(object sender, EventArgs e)
{
if (this.MdiChildren.Count() == 0)
{
entry en = new entry();
en.MdiParent = this;
en.Dock = DockStyle.Fill;
en.Show();
}
else
{
closeAll();
entry en = new entry();
en.MdiParent = this;
en.Dock = DockStyle.Fill;
en.Show();
}
ribbonButton3.Enabled = true;
ribbonButton6.Enabled = false;
ribbonButton9.Enabled = false;
}
public entry()
{
InitializeComponent();
form1 = this;
}