[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}
		private void Form1_Load(object sender, System.EventArgs e)
		{
						this.listView1.Visible = false;				
						this.listView2.Visible = false;
						this.listView3.Visible = false;
			//Dateiname 
			string fileNameDat1 = Path.Combine(Application.StartupPath,"Dat1.txt");					
			//StreamReaderinstanz 
			StreamReader srDat1 = null;
		{
			srDat1 = new StreamReader(fileNameDat1,Encoding.Default);
		}
			// zeilenweise einlesen
			while(srDat1.Peek()>-1)
			{
				//  ausgeben
				listView1.Items.Add(new ListViewItem(srDat1.ReadLine().Split('|')));
			}
			srDat1.Close();
 
			//Dateiname 
			string fileNameDat2 = Path.Combine(Application.StartupPath,"Dat2.txt");					
			//StreamReaderinstanz 
		{	
			StreamReader srDat2 = null;
		{
			srDat2= new StreamReader(fileNameDat2,Encoding.Default);
		}
			// zeilenweise einlesen
			while(srDat2.Peek()>-1)
			{
				//  ausgeben
				listView2.Items.Add(new ListViewItem(srDat2.ReadLine().Split('|')));
			}
			srDat2.Close();  
		}
			//Dateiname
			string fileNameDat3 = Path.Combine(Application.StartupPath,"Dat3.txt");					
			//StreamReaderinstanz 
		{	
			StreamReader srDat3 = null;
		{
			srDat3= new StreamReader(fileNameDat3,Encoding.Default);
		}
			//  zeilenweise einlesen
			while(srDat3.Peek()>-1)
			{
				//  ausgeben
				listView3.Items.Add(new ListViewItem(srDat3.ReadLine().Split('|')));
			}
			srDat3.Close();  
		}
		}
		private void tabControl1_Click (object sender, System.EventArgs e)
		{	
 
			if(tabControl1.SelectedTab  == tabPageDat1)	
				this.listView1.Visible = true;
				this.listView2.Visible = false;			
				this.listView3.Visible = false;
 
			if(tabControl1.SelectedTab  == tabPageDat2)
				this.listView1.Visible = false;
				this.listView2.Visible = true;			
				this.listView3.Visible = false;				
 
			if(tabControl1.SelectedTab  == tabPageDat3)
				this.listView1.Visible = false;
				this.listView2.Visible = false;				
				this.listView3.Visible = true;
 
				}		
 
		private void btnBeenden_Click(object sender, System.EventArgs e)
		{
			this.Close();
		}
	}
}