Zeiterfassung.Hilfe.treeView1_AfterSelect C# (CSharp) Метод

        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            if (treeView1.SelectedNode.ToString() == "TreeNode: Hauptmenü")
            {
                string address = Application.StartupPath + "\\hilfe\\hilfe-haupt.html";
                webBrowser1.Navigate(new Uri(address));
            }

            if (treeView1.SelectedNode.ToString() == "TreeNode: Login")
            {
                string address = Application.StartupPath + "\\hilfe\\hilfe-login.html";
                webBrowser1.Navigate(new Uri(address));
            }

            if (treeView1.SelectedNode.ToString() == "TreeNode: Hilfe")
            {
                string address = Application.StartupPath + "\\hilfe\\hilfe-hilfe.html";
                webBrowser1.Navigate(new Uri(address));
            }

            if (treeView1.SelectedNode.ToString() == "TreeNode: Hilfe")
            {
                string address = Application.StartupPath + "\\hilfe\\hilfe-hilfe.html";
                webBrowser1.Navigate(new Uri(address));
            }

            if (treeView1.SelectedNode.ToString() == "TreeNode: Administration")
            {
                string address = Application.StartupPath + "\\hilfe\\hilfe-admin.html";
                webBrowser1.Navigate(new Uri(address));
            }

            if (treeView1.SelectedNode.ToString() == "TreeNode: Kunde")
            {
                string address = Application.StartupPath + "\\hilfe\\hilfe-kunde.html";
                webBrowser1.Navigate(new Uri(address));
            }

            if (treeView1.SelectedNode.ToString() == "TreeNode: Mitarbeiter")
            {
                string address = Application.StartupPath + "\\hilfe\\hilfe-mitarbeiter.html";
                webBrowser1.Navigate(new Uri(address));
            }

            if (treeView1.SelectedNode.ToString() == "TreeNode: Projekte")
            {
                string address = Application.StartupPath + "\\hilfe\\hilfe-projekte.html";
                webBrowser1.Navigate(new Uri(address));
            }
        }