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ASP.net with Access SQL

Posted on 2011-03-23
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Last Modified: 2012-06-27
Hi

How do I update the SQL statement in the following code:
SELECT DISTINCT [Subject or activity] FROM [Table1]
so that nulls are not included.
Sub LoadSubjectDropDown()
        '// define a connection to the database
        Dim cs As String = ConfigurationManager.ConnectionStrings("WhatEverNameYouWant").ConnectionString
        cs = cs.Replace("App_Data\GC.accdb", Server.MapPath("App_Data\GC.accdb"))

        Dim cn As New OleDbConnection(cs)
        Try
            '// define the sql statement to execute
            Dim cmd As New OleDbCommand("SELECT DISTINCT [Subject or activity] FROM [Table1]", cn)
            '// open the connection
            cn.Open()
            '// execute the sql statement
            Using reader As OleDbDataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection)
                DropDownList_Subject.DataSource = reader
                DropDownList_Subject.DataValueField = "Subject or activity"
                DropDownList_Subject.DataTextField = "Subject or activity"
                DropDownList_Subject.DataBind()
            End Using
        Catch ex As Exception
            Response.Write(ex.Message)

        Finally
            If cn.State <> ConnectionState.Closed Then
                cn.Close()
            End If
        End Try
    End Sub

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Question by:Murray Brown
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3 Comments
 
LVL 120

Accepted Solution

by:
Rey Obrero (Capricorn1) earned 500 total points
ID: 35199281
try

"SELECT DISTINCT [Subject or activity] FROM [Table1] Where [Subject or activity] <> Null"

or

"SELECT DISTINCT [Subject or activity] FROM [Table1] Where [Subject or activity] is not Null"
0
 
LVL 120

Assisted Solution

by:Rey Obrero (Capricorn1)
Rey Obrero (Capricorn1) earned 500 total points
ID: 35199290
or

"SELECT DISTINCT [Subject or activity] FROM [Table1] Where [Subject or activity] & "" <> """
0
 

Author Closing Comment

by:Murray Brown
ID: 35199454
thanks very much
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