C# 目錄必須是上個文本框的子級目錄

1         private void btNet_Click(object sender, EventArgs e){
2             fB.Description = "選擇你要把.NET解釋部署到哪個目錄 它必須是站點根目錄或者子級目錄";
3             fB.SelectedPath = Application.StartupPath + "wwwroot";
4             do{
5                 fB.SelectedPath = tbnet.Text;
6                 if (fB.ShowDialog().GetHashCode() == 1){
7                     if (fB.SelectedPath.Contains(tbRoot.Text)){
8                         tbnet.Text = fB.SelectedPath;
9                     }else if (MessageBox.Show("必須是站點主目錄的平級目錄或者子級目錄", ".NET作用無法達到", MessageBoxButtons.RetryCancel, MessageBoxIcon.Information).GetHashCode() == 4){
10                         continue;
11                     }else{
12                         break;
13                     }
14                 }else{
15                     break;
16                 }
17             }while (fB.SelectedPath.Contains(tbRoot.Text) == false);{
18                 tbnet.Text = tbRoot.Text;
19             }
20         }