private void 학생관리ToolStripMenuItem_Click(object sender, EventArgs e)
{
frmStudent frm = new frmStudent();
frm.MdiParent = this;
frm.Show();
frm.Activate();
}
public static frmStudent CreateStudentForm()
{
if (frm == null)
{
frm = new frmStudent();
}
return(frm);
}
private void 학생관리ToolStripMenuItem_Click(object sender, EventArgs e)
{
frmStudent frm = frmStudent.CreateStudentForm();
frm.MdiParent = this;
frm.WindowState = FormWindowState.Maximized;
frm.Show();
frm.Activate();
}
private void 학생관리ToolStripMenuItem_Click(object sender, EventArgs e)
{
if (studentFrm == null)
{
studentFrm = new frmStudent();
studentFrm.MdiParent = this;
studentFrm.Show(); // Load => Shown => Activate
}
else
{
studentFrm.Activate(); // Activate
}
}
private void frmStudent_FormClosing(object sender, FormClosingEventArgs e)
{
frm = null;
}