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asp.net page - if page.previouspate...

Posted on 2011-03-08
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Last Modified: 2012-05-11
Hi,

I am looking at making images/links visible and invisible when a user is redirected from a page but do not know really where to start on this one.

I have been looking round and found

if page.previouspage ! = (page.aspx) then
result here
end if

but this doesnt work...

Any suggestions?

Thanks

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Question by:SimonPrice33
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6 Comments
 
LVL 7

Expert Comment

by:Nathan Bove
ID: 35070672
There are several ways to go about doing this.  Probably the easiest way would be to use query string parameters.

Code for page doing the redirect:
Response.Redirect("NewPage.aspx?showImage1=true&showImage2=false")

Code for page selectively displaying images/links:
protected void Page_Load(object sender, EventArgs e) {
  image1.Visible = bool.Parse(Request.QueryString["showImage1"]);
  image2.Visible = bool.Parse(Request.QueryString["showImage2"]);
}
0
 

Author Comment

by:SimonPrice33
ID: 35070859
Thank you for your response, I see that you have provided a solution in c#, and apologise for not saying earlier, but I am writing in VB.NET.

I have tried the request.querystring as you suggest, however this is coming up with a value of type system.collections.specialised.namevaluecollection cannot be converted to string.

Any suggestions?

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LVL 7

Expert Comment

by:Nathan Bove
ID: 35072658
It has been quite some time since I have written VB.NET code, if I remember correctly, it would look something like this::
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
  image1.Visible = Boolean.Parse(Request.QueryString("showImage1"))
  image2.Visible = Boolean.Parse(Request.QueryString("showImage2"))
End Sub
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Author Comment

by:SimonPrice33
ID: 35080392
Hi,

after looking at your c# code yesterday I tried it this way and unfortunately it didnt work :(

I will continue to to try and modify this...

Thanks

Simon
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Accepted Solution

by:
SimonPrice33 earned 0 total points
ID: 35874339
have been unable to find a working solution so have given up on this idea... and will close the question.
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Author Closing Comment

by:SimonPrice33
ID: 35906678
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