private void tabControl1_SelectedIndexChanged(object sender, EventArgs e)
{
if (tabControl1.SelectedIndex == 1)
{
var frm = new ChinhSuaQuyen();
frm.ShowDialog();
}
}
private void btnUserPrivileges_Click(object sender, EventArgs e)
{
ChinhSuaQuyen f = new ChinhSuaQuyen();
f.ShowDialog();
}