Display Files In GridView From Server Directory Asp.Net

This Example Show How To Display Files Directory Sub Directories In GridView From Server Folder In Asp.Net application using C# and Vb.Net.

We need to use DirectoryInfo class under System.IO namespace.

I'm displaying all files and directories (folders) from sever in gridview in page load.

I m creating a datatable in code behind with Name, Size and Type columns and assigning it as DataSource to Gridview.

Data in DataTable rows is coming from looping through all file and folder information stored in FileInfo or DirectoryInfo Arrays of GetFiles and GetDirectories methods of DirectoryInfo Class Object,

GetFiles method returns all the files and GetDirectories method returns all the directories or folder in server path specified.

To search all files i'm passing *.* and SearchOption.AllDirectories parameters in GetDirectories method,

we can display specific file type in gridview by specifying it's extension instead of *.* (for example *.jpg or filename.*). SearchOption.AllDirectories parameter search files in all sub directories

C# CODE

---

protected void Page_Load(object sender, EventArgs e)
    {
        DataTable gvSource = DisplayFilesInGridView();
        DataRow gvRow;

        //Get All Folders Or Directories and add in table
        DirectoryInfo directory = new DirectoryInfo(Server.MapPath("~/csharpdotnetfreak.blogspot.com"));
        DirectoryInfo[] subDirectories = directory.GetDirectories();
        foreach (DirectoryInfo dirInfo in subDirectories)
        {
            gvRow = gvSource.NewRow();
            gvRow["Name"] = dirInfo.Name;
            gvRow["Type"] = "Directory";
            gvSource.Rows.Add(gvRow);
        }
        //Get files in all directories 
        FileInfo[] files = directory.GetFiles("*.*", SearchOption.AllDirectories);
        foreach (FileInfo fileInfo in files)
        {
            gvRow = gvSource.NewRow();
            gvRow["Name"] = fileInfo.Name;
            gvRow["Size"] = fileInfo.Length;
            gvRow["Type"] = "File";
            gvSource.Rows.Add(gvRow);
 
        }
        gridviewDisplayFilesDirectories.DataSource = gvSource;
        gridviewDisplayFilesDirectories.DataBind();
    }

    private DataTable DisplayFilesInGridView()
    {
        DataTable dtGvSource = new DataTable();
        dtGvSource.Columns.Add(new DataColumn("Name", typeof(System.String)));
        dtGvSource.Columns.Add(new DataColumn("Size", typeof(System.String)));
        dtGvSource.Columns.Add(new DataColumn("Type", typeof(System.String)));
        return dtGvSource;
    }

VB.NET

---

Protected Sub Page_Load(sender As Object, e As EventArgs)
 Dim gvSource As DataTable = DisplayFilesInGridView()
 Dim gvRow As DataRow

 'Get All Folders Or Directories and add in table
 Dim directory As New DirectoryInfo(Server.MapPath("~/csharpdotnetfreak.blogspot.com"))
 Dim subDirectories As DirectoryInfo() = directory.GetDirectories()
 For Each dirInfo As DirectoryInfo In subDirectories
  gvRow = gvSource.NewRow()
  gvRow("Name") = dirInfo.Name
  gvRow("Type") = "Directory"
  gvSource.Rows.Add(gvRow)
 Next
 'Get files in all directories 
 Dim files As FileInfo() = directory.GetFiles("*.*", SearchOption.AllDirectories)
 For Each fileInfo As FileInfo In files
  gvRow = gvSource.NewRow()
  gvRow("Name") = fileInfo.Name
  gvRow("Size") = fileInfo.Length
  gvRow("Type") = "File"

  gvSource.Rows.Add(gvRow)
 Next
 gridviewDisplayFilesDirectories.DataSource = gvSource
 gridviewDisplayFilesDirectories.DataBind()
End Sub

Private Function DisplayFilesInGridView() As DataTable
 Dim dtGvSource As New DataTable()
 dtGvSource.Columns.Add(New DataColumn("Name", GetType(System.String)))
 dtGvSource.Columns.Add(New DataColumn("Size", GetType(System.String)))
 dtGvSource.Columns.Add(New DataColumn("Type", GetType(System.String)))
 Return dtGvSource
End Function

Download Sample Code

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