List files in a directory, modify name.

[Øyvind Isaksen]

Hi,

I have made a code that list all files in a directory on the server.
It works fine, but I need to modify the filename (remove the 7 first char in
the name) that is displayed in the datagrid.

Example:
The file "123456_myfile.jpg" shoult be displayed like this: "myfile.jpg"

---------------------------
This is my code so far:
---------------------------

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
Dim dirInfo As New
DirectoryInfo(Server.MapPath("/uploads/isaksenmedia/"))
Me.dtgFilelist.DataSource = dirInfo.GetFiles("*.*")
Me.dtgFilelist.DataBind()
End Sub


<aspataGrid id="dtgFilelist" runat="server" autogeneratecolumns="False">
<Columns>
<asp:HyperLinkColumn DataNavigateUrlField="Name"
DataTextField="Name" HeaderText="Filename" />
<asp:BoundColumn DataField="LastWriteTime" HeaderText="Modyfied"
DataFormatString="{0:d}" />
<asp:BoundColumn DataField="Length" HeaderText="Size"
DataFormatString="{0:#,### bytes}" />
</Columns>
</aspataGrid>



Thanks!!!!!!

 

[DKode]

If i were you, I would dump the GetFiles into a collection first and
iterate through that, changing the names while it is still in a
collection, then bind this collection to the datagrid, it would be
easier then binding it to the datagrid and then changing it.

 

[Øyvind Isaksen]

Ok, I sounds like a smart way to do it!
Could you please help me get started making this "collection", I'm not shure
how to do this... Guess this is an array...?

Thanks alot!!!

 

[DKode]

ok,

GetFiles returns a FileInfo[] collection

if you go to msdn.microsoft.com and look up FileInfo class, you'll see
all the different properties you can get about a file, it depends on
what you want out of FileInfo class. you can setup a foreach and
iterate through the FileInfo[] collection changing properties if you
want:

i havent tested this code, but you should point you in the right
direction

FileInfo[] files = dirInfo.GetFiles();

foreach (FileInfo f in files) {
f.Name = f.Name.substring(8, f.Name.Length - 8);
}

DataGrid myDataGrid.DataSource = files;
myDataGrid.DataBind();

that substring might throw an error because of the length of the
substring, but you get the idea.

hope this helps