Visual Basic 2010 Help Needed
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Thread: Visual Basic 2010 Help Needed

  1. #1
    Join Date
    Dec 2012
    Posts
    1

    Question Visual Basic 2010 Help Needed

    i am trying to create a form that lets me add new entries into a database when i click a button. "reference to a non-shared member requires an object reference" is the error that occurs at karateDataSet.Tables("Payments") on line 17 and 22 in the code. any help would be appreciated, thanks.

    Code:
    Public Class AddNewPayments
    
        Private Sub btnShow_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnShow.Click
            Payments.Show()
        End Sub
    
        Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
            Dim newAccount As Integer
            Dim newMember As Integer
            Dim payDate As Date
    
            Try
                newAccount = CInt(txtAccount.Text)
                newMember = CInt(txtMember.Text)
                payDate = DateTimePicker1.Value.Date
    
                Dim newPaymentsRow As DataRow = karateDataSet.Tables("Payments").NewRow()
                newPaymentsRow("Account") = newAccount
                newPaymentsRow("Member_ID") = newMember
                newPaymentsRow("Payment_Date") = payDate
    
                karateDataSet.Tables("Payments").Rows.Add(newPaymentsRow)
            Catch ex As Exception
                MessageBox.Show("Only numeric values can be added")
            End Try
        End Sub
    End Class

  2. #2
    Join Date
    Jan 2006
    Location
    Chicago, IL
    Posts
    14,984

    Re: Visual Basic 2010 Help Needed

    Looks like your code overwrites the current line, then adds a new line, which you never fill any fields. Plus, you never SAVE the table INSERT statement. You've skipped a chapter or two
    David

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  3. #3
    Join Date
    Aug 2009
    Location
    NW USA
    Posts
    173

    Re: Visual Basic 2010 Help Needed

    You are receiving a compile error, not a runtime error. The error has to do with the fact that karateDataSet has not been included in your Form1 class. I don't work with code when building forms so the only way I know to fix this (assuming the dataset has already been created and the Payments table created in the DS) is to drag the karateDataSet component from the Toolbox onto the form.

    I ran the code and it works fine after that.

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