void MainFormLoad(object sender, System.EventArgs e){
			this.tabPage1.Tag = this.listView1;
			this.tabPage2.Tag = this.listView2;
			this.tabPage3.Tag = this.listView3;
         // etc.
 
			foreach (TabPage tp in this.tabControl1.TabPages){
				tp.VisibleChanged += new EventHandler(TabPageVisibleChanged);
				(tp.Tag as ListView).Visible = false;
			}
 
			this.tabPage1.Visible = true;			
		}
 
		private void TabPageVisibleChanged(object sender, EventArgs e){
			((sender as TabPage).Tag as ListView).Visible = (sender as TabPage).Visible; 
		}