Sort files in a directory

I would like to sort the list of files (documents) that I am retrieving into
a DataGrid control when they are first displayed. Currently they just list
in the order that they appear in the directory and I would like to sort them
on LastWriteTime property. Below is what I am using to populate the
DataGrid. Thanks.

David


Dim dirInfo As New DirectoryInfo(strPathPhy)
articleList.DataSource = dirInfo.GetFiles()
articleList.DataBind()

David C

http://morewally.com/cs/blogs/wallym...t-10-2007.aspx

Looks like you need to specify the version of the framework if url doesn't
meet your need.





"David C" <> wrote in message
news:...
>I would like to sort the list of files (documents) that I am retrieving
>into a DataGrid control when they are first displayed. Currently they just
>list in the order that they appear in the directory and I would like to
>sort them on LastWriteTime property. Below is what I am using to populate
>the DataGrid. Thanks.
>
> David
>
>
> Dim dirInfo As New DirectoryInfo(strPathPhy)
> articleList.DataSource = dirInfo.GetFiles()
> articleList.DataBind()
>
>
>

sloan

I am running on VS 2005 and .Net 2.0

David
"sloan" <> wrote in message
news:...
>
> http://morewally.com/cs/blogs/wallym...t-10-2007.aspx
>
> Looks like you need to specify the version of the framework if url doesn't
> meet your need.
>
>
>
>
>
> "David C" <> wrote in message
> news:...
>>I would like to sort the list of files (documents) that I am retrieving
>>into a DataGrid control when they are first displayed. Currently they
>>just list in the order that they appear in the directory and I would like
>>to sort them on LastWriteTime property. Below is what I am using to
>>populate the DataGrid. Thanks.
>>
>> David
>>
>>
>> Dim dirInfo As New DirectoryInfo(strPathPhy)
>> articleList.DataSource = dirInfo.GetFiles()
>> articleList.DataBind()
>>
>>
>>
>
>

David C

On Jul 2, 1:03*pm, "David C" <dlch...@lifetimeinc.com> wrote:
> I would like to sort the list of files (documents) that I am retrieving into
> a DataGrid control when they are first displayed. *Currently they just list
> in the order that they appear in the directory and I would like to sort them
> on LastWriteTime property. *Below is what I am using to populate the
> DataGrid. *Thanks.
>
> David
>
> * * Dim dirInfo As New DirectoryInfo(strPathPhy)
> * * articleList.DataSource = dirInfo.GetFiles()
> * * articleList.DataBind()

something like this, perhaps: (see at
http://www.siccolo.com/Articles/Code...ileDialog.html)
...
Dim FileInfoComparer As FileInfoComparer = New FileInfoComparer()
Dim FileList() As FileInfo = ParentFolder.GetFiles()
Array.Sort(FileList, FileInfoComparer)
...
where
Public Class FileInfoComparer Implements
System.Collections.IComparer
Public Function Compare(ByVal objFileInfo1 As Object, ByVal
objFileInfo2 As Object) As Integer _
Implements IComparer.Compare
Dim FileInfo1 As System.IO.FileInfo = CType(objFileInfo1,
System.IO.FileInfo)
Dim FileInfo2 As System.IO.FileInfo = CType(objFileInfo2,
System.IO.FileInfo)

Return String.Compare(FileInfo1.Name, FileInfo2.Name, True)
End Function
End Class



more at http://www.siccolo.com/articles.asp

siccolo

I'm assuming you mean a GridView control since I don't see a control on the
Data tab called a DataGrid. If that's the case you can just use the
GridView's sort method

GridView1.Sort("FieldName", SortDirection)

HTH

S

"David C" <> wrote in message
news:...
>I would like to sort the list of files (documents) that I am retrieving
>into a DataGrid control when they are first displayed. Currently they just
>list in the order that they appear in the directory and I would like to
>sort them on LastWriteTime property. Below is what I am using to populate
>the DataGrid. Thanks.
>
> David
>
>
> Dim dirInfo As New DirectoryInfo(strPathPhy)
> articleList.DataSource = dirInfo.GetFiles()
> articleList.DataBind()
>
>
>

SAL

Oh, that version. Sorry...

S

"Mark Rae [MVP]" <> wrote in message
news:...
> "SAL" <> wrote in message
> news:...
>
>> I'm assuming you mean a GridView control since I don't see a control on
>> the Data tab called a DataGrid.
>
> http://aspnet.4guysfromrolla.com/articles/040502-1.aspx
>
>
> --
> Mark Rae
> ASP.NET MVP
> http://www.markrae.net

SAL

Hi there,

Protected Sub Page_Load(ByVal sender As Object, ByVal e As
System.EventArgs) Handles Me.Load

If Not IsPostBack Then

Dim files As FileInfo() = New DirectoryInfo("c:\temp").GetFiles()

Array.Sort(Of FileInfo)(files, AddressOf FileInfoComparison)

articleList.DataSource = files
articleList.DataBind()

End If

End Sub

Private Shared Function FileInfoComparison(ByVal fi1 As FileInfo, ByVal
fi2 As FileInfo) As Integer
Return Date.Compare(fi1.LastWriteTime, fi2.LastWriteTime)
End Function

--
Milosz


"David C" wrote:

> I would like to sort the list of files (documents) that I am retrieving into
> a DataGrid control when they are first displayed. Currently they just list
> in the order that they appear in the directory and I would like to sort them
> on LastWriteTime property. Below is what I am using to populate the
> DataGrid. Thanks.
>
> David
>
>
> Dim dirInfo As New DirectoryInfo(strPathPhy)
> articleList.DataSource = dirInfo.GetFiles()
> articleList.DataBind()
>
>
>
>

Milosz Skalecki [MCAD]

Thanks.. but this does not seem to work for me. Produces the images in
a random order.

thanks.

Imports System.Collections
Imports System.IO

Partial Class _Default
Inherits System.Web.UI.Page


Sub Page_Load()

Dim pictures As New SortedList
Dim filename As String = ""
Dim i As Integer

Dim files As FileInfo() = New DirectoryInfo("c:\ppp\pictures
\").GetFiles()

Array.Sort(Of FileInfo)(files, AddressOf FileInfoComparison)




For i = 0 To files.Length - 1

filename = files(i).Name.ToLower()

If filename.EndsWith(".jpg") Then
pictures("pictures/" & filename) = "thumb.aspx?
src=pictures/" & filename
End If

Repeater1.DataSource = pictures
Page.DataBind()
Next


End Sub


Private Shared Function FileInfoComparison(ByVal fi1 As FileInfo,
ByVal fi2 As FileInfo) As Integer
Return Date.Compare(fi1.LastWriteTime, fi2.LastWriteTime)
End Function



End Class

jc

"jc" <> wrote in message
news:e78fc297-b4ba-4202-827f-...
> Thanks.. but this does not seem to work for me. Produces the images in
> a random order.
>
> thanks.
>
> Imports System.Collections
> Imports System.IO
>
> Partial Class _Default
> Inherits System.Web.UI.Page
>
>
> Sub Page_Load()
>
> Dim pictures As New SortedList
> Dim filename As String = ""
> Dim i As Integer
>
> Dim files As FileInfo() = New DirectoryInfo("c:\ppp\pictures
> \").GetFiles()
>
> Array.Sort(Of FileInfo)(files, AddressOf FileInfoComparison)
>
>
>
>
> For i = 0 To files.Length - 1
>
> filename = files(i).Name.ToLower()
>
> If filename.EndsWith(".jpg") Then
> pictures("pictures/" & filename) = "thumb.aspx?
> src=pictures/" & filename
> End If
>
> Repeater1.DataSource = pictures
> Page.DataBind()
> Next
>
>
> End Sub
>
>
> Private Shared Function FileInfoComparison(ByVal fi1 As FileInfo,
> ByVal fi2 As FileInfo) As Integer
> Return Date.Compare(fi1.LastWriteTime, fi2.LastWriteTime)
> End Function
>
>
>
> End Class
>
>

Seems to me that you are sorting the list ok in files but then you are
creating a new SortedList which has nothing to do with the sort you did on
LastWriteTime. The list is most likely sorted on the keys.

LS

Lloyd Sheen

> Seems to me that you are sorting the list ok in files but then you are
> creating a new SortedList which has nothing to do with the sort you did on
> LastWriteTime. *The list is most likely sorted on the keys.

How can I loop through files in the new sorted order if not by the
index?

Any suggestion on fixing the code to do what I want?

Thanks.

jc