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Writing a SQL query through VB.net to oracle

Posted on 2007-11-19
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Last Modified: 2010-05-19
Hey, i need to connect to oracle when i press a button, and ask this SQL query:

SELECT oi.vare_nr, oi.ans_nr, COUNT(*)
FROM ordreinfo oi, vare v, ansatt a
WHERE v.vare_nr = oi.vare_nr
AND a.ans_nr = oi.ans_nr
GROUP BY oi.vare_nr, oi.ans_nr;

after this i need to get the information i receive from the SQL query to a listbox, how do i do this?


I was thinking something like this (its some variables there in norwegian, but you understand :))

I dont understand how i should implement this SQL query to my code, and i dont know if this is the correct way to go :)
Dim forbindelse As New System.Data.OracleClient.OracleConnection
 
        forbindelse.ConnectionString = "user id=****;password=****;data source=oracle.*******"
        forbindelse.Open()
 
        Dim setning As String = "sql query?????"
 
 
        Dim kommando As New System.Data.OracleClient.OracleCommand(setning, forbindelse)
 
 
        Dim dataleser As OracleClient.OracleDataReader
        dataleser = kommando.ExecuteReader()

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Question by:leeds2000
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4 Comments
 
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Accepted Solution

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Solar_Flare earned 500 total points
ID: 20316928
yes you are on the right track

once that code has finished you will want to set the datasource of the listbox = dataleser
Dim forbindelse As New System.Data.OracleClient.OracleConnection
 
        forbindelse.ConnectionString = "user id=****;password=****;data source=oracle.*******"
        forbindelse.Open()
 
        Dim setning As String = "SELECT ...."
 
 
        Dim kommando As New System.Data.OracleClient.OracleCommand(setning, forbindelse)
 
 
        Dim dataleser As OracleClient.OracleDataReader
        dataleser = kommando.ExecuteReader()
 
 listbox1.Datasource = dataleser ''bind the results of the query to the listbox, make sure you have the display and value members of the listbox set to the correct column names in the query
 dataleser.Close()
 

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by:leeds2000
ID: 20316979
Okei, i will try this tomorrow, thanks for the help so far :)
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by:leeds2000
ID: 20329955
Im struggling with getting the information from this SQL query to show in the listbox or a datagridview, how do i do this?
please help
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LVL 15

Expert Comment

by:Solar_Flare
ID: 20378323
you need to make sure the datatextfield and datavaluefield are set to the appropriate field names from the query so it knows which fields to use for the text and value
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