How to create directory listing of all my mp4 movies files in Gridview and show thumbnails and details dynamically in codebehind vb.net

Question

User159294348 posted

I have this code in default.aspx:

<asp:GridView ID="GridView1" Runat="server"

DataSource='<%# GetData() %>' AutoGenerateColumns="False">

<asp:BoundField HeaderText="Num" DataField="NumID">

<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle"></ItemStyle></asp:BoundField>

<asp:TemplateField>

<ItemTemplate>

<asp:HyperLink ID="MovieLink" runat="server" HeaderText="MovieURL" style="border-style: none" ControlStyle-Height="150" ControlStyle-Width="105"

NavigateUrl=""   Target="">MovieLink</asp:HyperLink>

</ItemTemplate>

    </asp:TemplateField>

Here is my default.aspx.vb code behind:

Function GetData() As DataTable

Dim dt as New DataTable()

dir As New IO.DirectoryInfo(MovieImagesPath)

Dim dirInfo As IO.DirectoryInfo() = dir.GetDirectories()

Dim dir2 As IO.DirectoryInfo

dt.Columns.Add(New DataColumn("NumID", GetType(Integer)))

Dim Num as Integer

Dim dr As DataRow = dt.NewRow()

'list the names of all Movie Name directories in the Movie directory

For Each dir2 In dirInfo

            Num = Num + 1

            dr("NumID") = Num

            dr("MovieLink").NavigateUrl = ResolveUrl(GetMovieImage(dir2.ToString)

           dr("MovieLink").ImageUrl = ResolveUrl(GetMovieImage(dir2.ToString)

   dt.Rows.Add(dr)

   dr = dt.NewRow()    

Next

        dt.Rows.Add(dr)

Return dt

End Function

MY QUESTIONS ARE :

Why the "dr("MovieLink").NavigateUrl" and "dr("MovieLink").ImageUrl" do not work?

Looks like it cannot found inside the templateitem.

It list the directory for all the mp4 files just fine when I comment this 2 lines out.

I want to be able to see the small thumbnails image on the gridview list and when I click on it will show the details page on the NavigateURL link.

I want to do all the dynamically in codebehind for any new MP4 files, thumbnails images and URL links for details of movies.

Any help will be appreciated.