using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace flight_hands { public partial class Form1 : Form { public Form1() { InitializeComponent(); GenInitializeComponent(); GenStartButtons(); } private void Form1_SizeChanged(object sender, EventArgs e) { GenInitializeComponent(); } private void button1_Click(object sender, EventArgs e) { if (!(sender is Button)) { return; } Button button = (Button)sender; if (button.Name == "videos") { this.tabControl.SelectedIndex = 1; } if (button.Name == "lernerhandbuch") { this.tabControl.SelectedIndex = 2; } } } }