private void ButtonAdd_Click(object sender, EventArgs e) { if (this.mTabControlMain.SelectedTab == this.mTabPageIssues) { var lNewIssueControlHost = new NewIssueControlHost(this.Project); lNewIssueControlHost.IssueCreated += (s, args) => this.OpenIssue(args.Value); this.NavigationController.PushControlHost(lNewIssueControlHost); } else { System.Diagnostics.Debug.Assert(this.mTabControlMain.SelectedTab == this.mTabPageMilestones); } }