c# 做一个跟电脑任务管理器差不多的怎么做？

加入TabControl控件，再用下面的代码private void tabControl1_SelectedIndexChanged(object sender, System.EventArgs e)
{
   switch(this.tabControl1.SelectedIndex)
   {
    case 0:
       MessageBox.Show("tabPage1 is Selected");
     break;
    case 1:
       MessageBox.Show("tabPage2 is Selected");
     break;
   }
}