Working with a class

absolutezero · #1 (**permalink**) August 19th, 2005, 12:30 AM

I have been racking my brain for days on this and have flipped through every ASP.Net book i have and have yet to come up with the correct way to do this! I am writing a custom class to make my code more manageable (obviously) but am having some difficulty.

Here is the code:

Code:

Public Class productImage

    Private intId as integer                                'Value for productID
    Private strImagePath as string                            'String Value for the Image Path

    Public Function GetImage(ByVal intPID as integer)
        Dim objConnection as New OleDbConnection                         'Dbase Connection
        Dim objCommand as New OleDbCommand                            'Dbase Command
        Dim objDataReader as OleDbDataReader                        'DataReader
        Dim strSQLQuery as string = ""                            'SQL Query

    objConnection = New System.Data.OLEDB.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & Server.MapPath("./dbase/schools.mdb") & ";"    )
    objConnection.open()

    strSQLQuery = "SELECT * from images where pid=" &intPID
    objCommand = New OleDbCommand(strSQLQuery, objConnection)
    objDataReader = objCommand.ExecuteReader()
        While objDataReader.Read
            'lblText.text ="You selected a " & objDataReader("prod_desc")
             SetImage("<img src=" & objDataReader("prod_image") &">")
        End While
        objConnection.Close()
        objDataReader.Close()
        objDataReader = Nothing
        objConnection = Nothing

    End Function

    Public Property SetImage() as string
        Get
            return strImagePath
        End Get
        Set(ByVal imageString as String)
            strImagepath = imageString
        End Set
    End Property        

    End Sub
End Class

Originaly I had the objConnection, DataReader, and command defined as private with all of my other variables because i was getting the error:

Reference to a non-shared member requires an object reference. on line 17 where i declare

Code:

objConnection = New System.Data.OLEDB.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & Server.MapPath("./dbase/schools.mdb") & ";"    )

I then moved the variables into the function thinking, for some reason, i couldnt access them. (Didnt make sense but I was working on process of elimination) again i got the same error. Then I thought that maybe I couldnt access the namespace so typed out the exact location of, for example, the OleDbConnection.

I also am getting an error where i try to call my property:

Code:

SetImage("<img src=" & objDataReader("prod_image") &">")

saying that to access a property i must either use or set its value.

Any ideas??

'Edit
I went back through the code and replaced Server.MapPath([location]) with the direct path to the database and this resolved the error, does anyone know why this would not work? I have verified that the path is correct ./dbase/schools.mdb

'Edit 2
I resolved this issue, apparently inside a class you must reference server.mappath() directly by using

Code:

httpContext.Current.Server.MapPath()

"There is nothing more honorable then doing a thing well"

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