<%@ Import Namespace="System.IO" %>
<script runat="server" language="VB">
Sub Page_Load(sender as Object, e as EventArgs)
Dim dirInfo as New DirectoryInfo(Server.MapPath(""))
Dim images() as FileInfo = FilterForImages(dirInfo.GetFiles())
Dim imgIndex as Integer = 0
If Not Request.QueryString("N") is Nothing AndAlso IsNumeric(Request
.QueryString("N")) then
imgIndex = CInt(Request.QueryString("N"))
End If
currentImgTitle.Text = "You are Viewing: " & _
Path.GetFileNameWithoutExtension(images(imgIndex).Name) & _
" (" & imgIndex + 1 & " of " & images.Length & ")"
currentImg.ImageUrl = Path.GetFileName(images(imgIndex).Name)
If imgIndex > 0 then
lnkPrev.NavigateUrl = "Default.aspx?N=" & imgIndex - 1
End If
If imgIndex < images.Length - 1 then
lnkNext.NavigateUrl = "Default.aspx?N=" & imgIndex + 1
End If
dlIndex.DataSource = images
dlIndex.DataBind()
End Sub
Function FilterForImages(images() as FileInfo) as FileInfo()
Dim newImages as New ArrayList(images.Length)
Dim i as Integer
For i = 0 to images.Length - 1
If Path.GetExtension(images(i).Name) = ".jpg" OrElse _
Path.GetExtension(images(i).Name) = ".jpeg" OrElse _
Path.GetExtension(images(i).Name) = ".png" OrElse _
Path.GetExtension(images(i).Name) = ".gif" then
newImages.Add(images(i))
End If
Next
Return CType(newImages.ToArray(GetType(FileInfo)), FileInfo())
End Function
Sub dlIndex_ItemDataBound(sender as Object, e as DataListItemEventArgs)
If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType =
ListItemType.AlternatingItem then
Dim hl as HyperLink = CType(e.Item.FindControl("lnkPic"), HyperLink)
hl.Text = Path.GetFileNameWithoutExtension(DataBinder.Eval(e.Item.DataItem,
"Name").ToString()) & _
" (" & Int(DataBinder.Eval(e.Item.DataItem, "Length") / 1000) & " KB)"
hl.NavigateUrl = "Default.aspx?N=" & e.Item.ItemIndex
End If
End Sub
</script><HTML>
<HEAD>
<STYLE TYPE="text/css">
body { font-family:Verdana;font-size: medium;}
.ImageTitle { font-weight:bold; font-size:large;}
.index {font-size: small;}
.NavLink { background-color: yellow; font-weight: bold; }
</STYLE>
</HEAD>
<BODY>
<center>
<asp:Label runat="server" id="currentImgTitle" CssClass="ImageTitle"
/><br />
<asp:Image runat="server" id="currentImg" />
<asp:HyperLink runat="server" CssClass="NavLink" id="lnkPrev" Text="<
Previous" /> |
<asp:HyperLink runat="server" CssClass="NavLink" id="lnkNext" Text="
Next >" />
<asp:DataList runat="server" id="dlIndex" OnItemDataBound="dlIndex_
ItemDataBound"
RepeatColumns="3" CssClass="index">
<ItemTemplate>
<li><asp:HyperLink runat="server" id="lnkPic" /></li>
</ItemTemplate>
</asp:DataList>
</center>
</BODY>
</HTML>
