Passing a GUID as a URL parameter.

Question

This seems really simple but I just can't figure it out. I'm
using MSSQL, I created a database with and ID column that is a GUID
and a varChar column to store some text. When I try to pass the
GUID to a detail page using Dreamweaver CS4, the page crashes and I
get the following error:
Application uses a value of the wrong type for the current
operation.
I really appreciate your time for helping me with this.
Thanks!! -Jeremy
Here's the code that was generated automatically by
Dreamweaver:

Answer 1

jonesie wrote:
> This seems really simple but I just can't figure it out.
I'm using MSSQL, I
> created a database with and ID column that is a GUID and
a varChar column to
> store some text. When I try to pass the GUID to a detail
page using Dreamweaver
> CS4, the page crashes and I get the following error:
>
> Application uses a value of the wrong type for the
current operation.
>
> I really appreciate your time for helping me with this.
Thanks!! -Jeremy
>
> Here's the code that was generated automatically by
Dreamweaver:
>
>
>
> <%
> Dim Recordset1__MMColParam
> Recordset1__MMColParam = "1"
> If (Request.QueryString("ID") <> "") Then
> Recordset1__MMColParam = Request.QueryString("ID")
> End If
> %>
> <%
> Dim Recordset1
> Dim Recordset1_cmd
> Dim Recordset1_numRows
>
> Set Recordset1_cmd = Server.CreateObject
("ADODB.Command")
> Recordset1_cmd.ActiveConnection = MM_GamehouseDSN_STRING
> Recordset1_cmd.CommandText = "SELECT * FROM
dbo.Dictionary WHERE ID = ?"
> Recordset1_cmd.Prepared = true
> Recordset1_cmd.Parameters.Append
Recordset1_cmd.CreateParameter("param1", 200,
> 1, 16, Recordset1__MMColParam) ' adVarChar
>
> Set Recordset1 = Recordset1_cmd.Execute
> Recordset1_numRows = 0
> %>
>
This line:
Recordset1_cmd.Parameters.Append
Recordset1_cmd.CreateParameter("param1", 200, 1, 16,
Recordset1__MMColParam) ' adVarChar
Passes the value of ID to the select statement using Datatype
varchar(16) which isn't the same datatype as the column in
your
database. You want to change that so use GUID as the
datatype.
This might work, you may need to alter the length to get it
work:
Recordset1_cmd.Parameters.Append
Recordset1_cmd.CreateParameter("param1", 72, 1, 16,
Recordset1__MMColParam)
Here is a list of datatypes:
http://msdn.microsoft.com/en-us/library/ms806221.aspx
Dooza
Posting Guidelines
http://www.adobe.com/support/forums/guidelines.html
How To Ask Smart Questions
http://www.catb.org/esr/faqs/smart-questions.html