One way is to use some HTML in the page to cause the refresh and a Session
variable to track the index. I'm using a label for convenience here but
you'd want to pass Session("imageno") to your routine:
' This is the web user control
Private Sub Page_Load _
(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
If IsNothing(Session("imageno")) Then
Label1.Text = "Get the first image."
Else
Label1.Text = "Go get image # " & _
Session("imageno").ToString
End If
End Sub
' This is in the .aspx.vb code behind
Private Sub Page_Load _
(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
Session("imageno") = Session("imageno") + 1
End Sub
Private Sub Button1_Click _
(ByVal sender As System.Object, ByVal e As System.EventArgs) _
Handles Button1.Click
End Sub
This is the .aspx page
<%@ Register TagPrefix="uc1" TagName="imgfle" Src="imgfle.ascx" %>
<%@ Page Language="vb" AutoEventWireup="false"
Codebehind="countimage.aspx.vb" Inherits="p4320work.countimage"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head><meta http-equiv="refresh" content="600">
<title>countimage</title>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" content="Visual Basic .NET 7.1">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema"
content="http://schemas.microsoft.com/intellisense/ie5">
</head>
<body MS_POSITIONING="FlowLayout">
<form id="Form1" method="post" runat="server">
<p>
<uc1:imgfle id="Imgfle1" runat="server"></uc1:imgfle></p>
<p>
<asp:button id="Button1" runat="server"
Text="Next"></asp:button></p>
</form>
</body>
</html>
"dbui" <> wrote in message
news:...
> Hi,
>
> I got a simple ascx. It has one image component. When first loaded, it
> scans
> thru \images folder, loads the first image, and save the index & the
> string
> array of picture names in session.
>
> When user click on the Next button, it will increase the index by one and
> reload the image according to this new index value.
>
> I want this web-control to be able to refresh itself every 5 seconds. And
> it
> could increase the index and load the image of this index in the array
> names.
>
> What is the best way in asp.net (not other scripts) to archieve this?
>
> Thanks.
>
>
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