Random redirect, why?

andreas5 · August 28th, 2010, 06:39 PM

Hi

I have a strange problem. I have a thumbnail for a random picture, with the following code in my page_load event to generate it.

Code:

            ...
            Dim PicCount = From pic In myEnt.Pictures
                           Select pic

            Dim rand As New Random()
            Dim randomImg As Int16 = rand.Next(0, PicCount.Count - 1)

            Dim randImg = From pic In myEnt.Pictures
                          Order By pic.Id Ascending
                          Skip randomImg
                          Select pic

            FormView4.DataSource = randImg
            FormView4.DataBind()
            ...

In the click event sub i have this code:

Code:

        Using myEnt As New PicturesEntities()

            Dim imgb As ImageButton = FormView4.FindControl("Rand")

            Dim rImg = From pic In myEnt.Pictures
                           Order By pic.Id
                           Where pic.ThumbnailUrl = imgb.ImageUrl
                           Select pic.Id

            Response.Redirect(String.Format("~/?={0}", rImg.First))
        End Using

Now, my problem is that when i click the thumbnail, i just go to a random site and not the one wich is previewed by the thumbnail. I have tried several different solutions wich all should work, atleast in my little mind

but with the same result every time.

I guess i am not finding the "right" ImageButton, but im too green to figure out why.

Imar · August 29th, 2010, 08:40 AM

Hi there,

Difficult to say as you're not posting the complete code, but I guessing that you bind the FormView in Page_Load when the page initially loads, and after a PostBack. When the postback happens. you assign a new random image and link.

Wrap your code in If Not Page.IsPostBack Then and it probably works. If not, please post more code.

Cheers,

Imar

andreas5 · August 29th, 2010, 11:28 AM

It worked! You are like a god to me!