Get Information About Files, Folders and its subfolders and show on a website [Answered]RSS

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  xandeq

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  Get Information About Files, Folders and its subfolders and show on a website

  Apr 19, 2017 05:11 PM|xandeq|LINK

  How to get Information about Files, Folders, and subfolders and show them on a ASP.NET C# website , showing a folder image for folders and subfolders and a generic file image for all files contained in that folder and a link to open/download the file ?

  Something like a file tree, that you click on the folder and it expands.

  Thanks in advance!

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  mgebhard

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  Re: Get Information About Files, Folders and its subfolders and show on a website

  Apr 19, 2017 05:26 PM|mgebhard|LINK

  xandeq

  How to get Information about Files, Folders, and subfolders

  Learn how to use the System.IO namespace.

  https://msdn.microsoft.com/en-us/library/07wt70x2(v=vs.110).aspx

  https://msdn.microsoft.com/en-us/library/bb513869.aspx

  xandeq

  and show them on a ASP.NET C# website , showing a folder image for folders and subfolders and a generic file image

  You'll need to find icons.  Font awesome has file images and it is free.

  http://fontawesome.io/icons/

   If this is an ASP Web Forms application you can bind the file result to a TreeView.  If this is an MVC app you can do a search from Tree View MVC for html helpers.

  https://demos.devexpress.com/MVCxNavigationAndLayoutDemos/TreeView/Callbacks

  xandeq

  and a link to open/download the file

  That's simply an link with an href if the files are within the application directory.  Otherwise you'll need to write a bit of code related to the ASP framework you are using to stream the file back to the client.  There are many examples of how to do this on the web.

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  Cathy Zou

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  Re: Get Information About Files, Folders and its subfolders and show on a website

  Apr 20, 2017 09:32 AM|Cathy Zou|LINK

  Hi xandeq,

  For your problem, I make an simple. You could refer to it:

    <asp:TreeView ID="TreeView1" runat="server" ExpandDepth="0" OnSelectedNodeChanged="TreeView1_SelectedNodeChanged">      
              <ParentNodeStyle  ImageUrl="~/Images/book.png" />
             <RootNodeStyle ImageUrl="~/Images/rootfolder.png"/>
              <NodeStyle  ImageUrl="~/Images/subfolde.jpg" />
            
          </asp:TreeView>

  CodeBehind:

     protected void Page_Load(object sender, EventArgs e)
          {
                string maifilepath = Server.MapPath("Files");        
              ListDirectory(TreeView1, maifilepath);
  
          }
          private void ListDirectory(TreeView treeView, string path)
          {
              treeView.Nodes.Clear();
              var rootDirectoryInfo = new DirectoryInfo(path);
              treeView.Nodes.Add(CreateDirectoryNode(rootDirectoryInfo));
          }
  
          private static TreeNode CreateDirectoryNode(DirectoryInfo directoryInfo)
          {
              var directoryNode = new TreeNode(directoryInfo.Name);
              foreach (var directory in directoryInfo.GetDirectories())
                  directoryNode.ChildNodes.Add(CreateDirectoryNode(directory));
              foreach (var file in directoryInfo.GetFiles())
                  directoryNode.ChildNodes.Add(new TreeNode(file.Name));
              return directoryNode;
          }
  
          protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
          {
              string filename="";
              System.IO.FileInfo file;
              if (TreeView1.SelectedValue.Contains("."))
              {
                  string foldename = TreeView1.SelectedNode.Parent.Text;
                  filename = Server.MapPath("~//Test/Files/"+ foldename+"/" + TreeView1.SelectedValue);
                 file = new System.IO.FileInfo(filename);
                  if (file.Exists)
                  {
                      System.Diagnostics.Process.Start(file.FullName);
                  }
  
              }
  
          }

  Output screenshot as below:

  

  For more information please refer to the following link:

  https://www.aspsnippets.com/Articles/Display-Directory-Folder-structure-using-ASPNet-TreeView-control-in-C-and-VBNet.aspx

  Best regards

  Cathy

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