private void tsbSystemSet_Click(object sender, EventArgs e)
{
SystemSet s = new SystemSet();
s.RefreshList += new EventHandler <EventArgs>(s_RefreshList);
string str = this.tsslCurrent.Text;
this.tsslCurrent.Text = "当前操作：系统配置";
s.ShowDialog(this);
this.tsslCurrent.Text = str;
}