Empty parameters in a asp .net (vb) page query string

[Paul M.]

Hi,
I am trying to populate 3 paramters in an asp .net (vb) page redirect,
the first one is ok ok and gets populated by the other two get inserted into
the url for the redirect as empty strings! Anyone got any clues?? The code
is below and I have checked that the variables beginning with "g_str" are
all populated before the code is called. I think its something to do with
the "&" in the "&Title" and "&Version", do I need to do something to
those???

Cheers
Paul

Dim strVal_1 as string
Dim strVal_2 as string
Dim strVal_3 as string

strVal_1= "?SQL=" & g_strSQL
strVal_2= "&Title=" + g_strTitle
strVal_3= "&Version=" + g_strVersion

Response.Redirect("http://localhost/misc/frmEntry.aspx?Error=" & strVal_1 &
strVal_2 & strVal_3)

 

[William Ryan]

Paul...I'm not sure but when you step through it in the debugger, I'm
assuming all the assignement are done correctl ( ie strVal_1, strVal_2 and
strVal3)

Try this...

Dim sb as New System.Text.Stringbuilder
sb.Append("http://localhost/misc/frmEntry.aspx?Error=")
sb.Append("?SQL=" & strSQL)
sb.Append("&Title=" & g_strTitle)
sb.Append("&Version=" & g_strVersion)
'Put breakpoint here to make sure redirect is what you want in it's
entirety - in the command window ?sb.ToSTring

Response.Redirect(sb.ToSTring)

It looks like the + might be the cause of improper string concatenation. In
either case, even if you don't use a stringbuilder, just add on all
concatenations with the line continue character _ b/c as it stands now,
you're creating at a minimum 3 string objects when one would do. (This
isn't the problem you are referring to, but it's just a suggestion for
efficiency's sake.)

Let me know if the full query string is getting populated correctly and if
so, we'll try to narrow it down from there.

Good Luck,

Bill

 

[Dave Bush]

You probably need to URLEncode the variables.

You can look that up in the help system.