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Solved

Retrive a random record from database

Posted on 2004-10-06
8
344 Views
Last Modified: 2010-05-18
Hey!

I'd like to retrive random record from my MS Access database. It would work like if I click on "Button2" it would show me random record from column "UserAgent" in "TextBox1".

Code I currently have is like this:

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
            xConn = New sqlConn
            xConn.connectMe("SELECT * UserAgent FROM UserAgents ORDER BY RAND() LIMIT 1")

        For iCounter = 0 To xConn.getData.Count - 1
            TextBox1.Text = (xConn.dataReturned.Item(iCounter))
        Next
        xConn.OLEConn.Close()

    End Sub

It doesn't work... Anybody got ideas?
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Comment
Question by:Aetia
  • 4
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8 Comments
 
LVL 18

Expert Comment

by:DotNetLover_Baan
ID: 12239269
r u setting up the connection perfectly ? Why you are using FOR loop if you want to display only one record ?
-Baan
0
 

Author Comment

by:Aetia
ID: 12239392
I am newbie... :)

I put tgether all i've found. Something from here something from there...

It seems that it connects to database correctly... it gives me following error:

Syntax error (missing operator) in query expression '*UserAgent'.
0
 
LVL 44

Expert Comment

by:Arthur_Wood
ID: 12239441
What are you attempting to do with this:

SELECT * UserAgent FROM UserAgents

as Select * will return MULTIPLE columns (all of the columns in the record), and you cannot assign a Alias (UserAgent) to MULTIPLE values.

Try this:

SELECT * FROM UserAgents ...

AW
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Author Comment

by:Aetia
ID: 12239495
if I click on "Button2" it would show me random record from column "UserAgent" in "TextBox1".
0
 
LVL 18

Expert Comment

by:DotNetLover_Baan
ID: 12239515
or
SELECT UserAgent FROM UserAgents
0
 
LVL 18

Accepted Solution

by:
DotNetLover_Baan earned 500 total points
ID: 12239653
Follow these steps:(ADO.Net approach)
-> Create and open an OleDbConnection with appropriate connection string. (www.connectionstrings.com)
     http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdataoledboledbconnectionclasstopic.asp
-> If the query u are using (but only select UserAgent field) is good, use that.
-> Create a OleDbCommand and use its execute scaler method to get the first record from the selected records.
     http://msdn.microsoft.com/library/en-us/cpref/html/frlrfSystemDataOleDbOleDbCommandClassTopic.asp
     http://msdn.microsoft.com/library/en-us/cpref/html/frlrfSystemDataOleDbOleDbCommandClassExecuteScalarTopic.asp
-> Display that record in the TextBox.

If you need help at any stage , let me know.
-Baan
0
 

Author Comment

by:Aetia
ID: 12239759
As far this should be right now

            xConn = New sqlConn
        xConn = New sqlConn
        xConn.connectMe("SELECT UserAgent FROM UserAgents")

What next? How can I display random result from database in "TextBox1"?
0
 

Author Comment

by:Aetia
ID: 12241626
OK! I got it almost working myselft.
0

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