C#下载文件时候弹出选择文件夹保存目录的代码

2022-07-15 80酷酷网 80kuku.com

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//保存文件夹选择对话框引用
//添加引用system.design.dll /
using System.Windows.Forms.Design;

private void button4_Click(object sender, System.EventArgs e)
{

   //选择文件的保存路径
   //添加窗体控件folderBrowserDialog1
   DirBrowser   olderBrowserDlg=new   DirBrowser();

   if (folderBrowserDialog1.ShowDialog()==DialogResult.OK)
   {
    textBox2.Text = folderBrowserDialog1.SelectedPath;
   }

}

  #region 弹出保存文件夹选择窗口类
  //一般选择文件保存地址都用弹出对话框来进行选择
  public class DirectorySelect : FolderNameEditor
  {
   private FolderBrowser fb = new FolderBrowser();
   private string fDescription = "Choose Directory";
   private string fReturnPath = String.Empty;

   public string Description
   {
    set { fDescription = value; }
    get { return fDescription; }
   }

   public string ReturnPath
   {
    get { return fReturnPath; }
   }

   public DirectorySelect()
   {

   }

   private DialogResult RunDialog()
   {
    fb.Description = this.Description;
    fb.StartLocation = FolderBrowserFolder.MyComputer;
    fb.Style = FolderBrowserStyles.RestrictToSubfolders;
    //|FolderBrowserStyles.RestrictToDomain;
    return fb.ShowDialog();
   }

   public DialogResult ShowDialog()
   {
    DialogResult dRes = DialogResult.None;
    dRes = RunDialog();
    if (dRes == DialogResult.OK)
     this.fReturnPath = fb.DirectoryPath;
    else
     this.fReturnPath = String.Empty;
    return dRes;
   }
  }

  //一般选择文件保存地址都用弹出对话框来进行选择
  //调用
  //DirBrowser   myDirBrowser=new   DirBrowser();
  //if(myDirBrowser.ShowDialog()!=DialogResult.Cancel)
  //MessageBox.Show(myDirBrowser.ReturnPath);

  public   class   DirBrowser   :   FolderNameEditor
  {
   FolderBrowser   fb   =   new   FolderBrowser();
   public   string   Description
   {
    set   {   _description   =   value;   }
    get   {   return   _description;   }
   }

   public   string   ReturnPath
   {
    get   {   return   _returnPath;   }
   }

   public   DirBrowser()   {   }
   public   DialogResult   ShowDialog()
   {
    fb.Description   =   _description;
    fb.StartLocation   =   FolderBrowserFolder.MyComputer;
    DialogResult   r   =   fb.ShowDialog();
    if   (r   ==   DialogResult.OK)
     _returnPath   =   fb.DirectoryPath;
    else
     _returnPath   =   String.Empty;

    return   r;
   }

   //private   string   _description   =   "Choose   Directory";
   //private   string   _returnPath   =   String.Empty;
   private   string   _description   =   "请选择文件夹";
   private   string   _returnPath   =   String.Empty;
  }

#endregion