DeploymentTracker.App.Windows.PackageDeployment.TabControl1_Selecting C# (CSharp) Метод

        private void TabControl1_Selecting(object sender, TabControlCancelEventArgs e)
        {
            using(AdvancedMessageBox advbox = new AdvancedMessageBox("Are you sure you want to cancel current operation?", ReportStatus.Information, true))
            {
                if (DialogResult.OK == advbox.ShowDialog())
                {
                    this.ResetTreeViewNodes(this.tvCheckList.Nodes["10"]);
                    this.ResetTreeViewNodes(this.tvCheckList.Nodes["20"]);
                    this.progressBar.Value = this.progressBar.Minimum;
                    this.btnViewBuildLog.Enabled = this.btnViewDeployLog.Enabled = this.btnViewTFLog.Enabled = false;
                    this.toolStripStatusLabel.Text = string.Empty;
                    this.rollbackVersionToLog = string.Empty;
                    this.pkgNameForLocalDeployment = string.Empty;
                    this.buildArgs = null;

                    switch (e.TabPageIndex)
                    {
                        case 0:
                            this.txtConfigPath.Text = this.txtPackagePath.Text = string.Empty;
                            break;
                        case 1:
                            this.cbxServerName.SelectedIndex = -1;
                            txtTFSLabelName.Text = txtTFSDefaultCollection.Text = txtSolutionName.Text = string.Empty;
                            btnLoadSolutions.Enabled = false;
                            this.btnLoadTFSlabel.Enabled = false;
                            break;
                        default:
                            break;
                    }
                }
                else
                {
                    e.Cancel = true;
                }
            }
            this.BringToFront();
        }