VB.Net - Trouble inserting values from a textbox in to an access database


I am trying to save the values of several textboxes on my windows form in to an Access 2010 table and am having trouble figuring out the code to do this.

What I have so far is below.

Private Sub SaveM_Record()

        Dim conn As New OleDbConnection
        Dim cmd As New OleDbCommand
        Dim sSQL As String = String.Empty

            'get connection string declared in the modFunctions.vb and assing it to conn variable
            conn = New OleDbConnection(sConnString)
            cmd.Connection = conn
            cmd.CommandType = CommandType.Text

If Me.txtMUnit.Text = "JBR" Then

                sSQL = "INSERT INTO tblSBTHist ( [ChqNum], [ChqDate], [Amount], [PayTo], [Reference], [DebitAcc], [CreditAcc], [Currency], [PayeeBank], [Unit])"
                sSQL = sSQL & "  VALUES(@ChqNum, @ChqDate, @Amount, @PayTo, @Reference, @DebitAcc, @CreditAcc, @Currency, @PayeeBank, @Unit)"
                cmd.CommandText = sSQL

            ElseIf Me.txtMUnit.Text = "HGHB" Then

                sSQL = "INSERT INTO tblBSBILHist ( [ChqNum], [ChqDate], [Amount], [PayTo], [Reference], [DebitAcc], [CreditAcc], [Currency], [PayeeBank], [Unit])"
                sSQL = sSQL & "  VALUES(@ChqNum, @ChqDate, @Amount, @PayTo, @Reference, @DebitAcc, @CreditAcc, @Currency, @PayeeBank, @Unit)"
                cmd.CommandText = sSQL


                MsgBox("Unit not defined in database." & vbNewLine & "Contact Administrator for assistance", MsgBoxStyle.Exclamation, "WARNING")

            End If

            'set paramaters
            cmd.Parameters.Add("@ChqNum", OleDbType.VarChar).Value = IIf(Len(Trim(Me.txtMChqNum.Text)) > 0, Me.txtMChqNum.Text, DBNull.Value)
            cmd.Parameters.Add("@ChqDate", OleDbType.VarChar).Value = IIf(Len(Trim(Me.DateTimePickerM.Text)) > 0, Me.DateTimePickerM.Text, DBNull.Value)
            cmd.Parameters.Add("@Amount", OleDbType.VarChar).Value = IIf(Len(Trim(Me.txtMAmt.Text)) > 0, Me.txtMAmt.Text, DBNull.Value)
            cmd.Parameters.Add("@PayTo", OleDbType.VarChar).Value = IIf(Len(Trim(Me.txtMPayTo.Text)) > 0, Me.txtMPayTo.Text, DBNull.Value)
            cmd.Parameters.Add("@DebitAcc", OleDbType.VarChar).Value = IIf(Len(Trim(Me.txtMDbtAccNum.Text)) > 0, Me.txtMDbtAccNum.Text, DBNull.Value)
            cmd.Parameters.Add("@CreditAcc", OleDbType.VarChar).Value = IIf(Len(Trim(Me.txtMCrdAccNum.Text)) > 0, Me.txtMCrdAccNum.Text, DBNull.Value)
            cmd.Parameters.Add("@Currency", OleDbType.VarChar).Value = IIf(Len(Trim(Me.txtMCurr.Text)) > 0, Me.txtMCurr.Text, DBNull.Value)
            cmd.Parameters.Add("@PayeeBank", OleDbType.VarChar).Value = IIf(Len(Trim(Me.txtMBnkPayee.Text)) > 0, Me.txtMBnkPayee.Text, DBNull.Value)
            cmd.Parameters.Add("@Unit", OleDbType.VarChar).Value = IIf(Len(Trim(Me.txtMUnit.Text)) > 0, Me.txtMUnit.Text, DBNull.Value)

MsgBox("Data has been saved.")

        Catch ex As Exception
        End Try

    End Sub

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Is someone able to assist please?

Kind Regards,
KevinInformation TechnologyAsked:
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Éric MoreauSenior .Net ConsultantCommented:
what't wrong with your code?
KevinInformation TechnologyAuthor Commented:
Apologies forgot to include the error.

Am getting an error for line 43 that says, oldbexception was unhandled, "No value given for one or more required parameters."

So I think Im missing something somewhere.
Éric MoreauSenior .Net ConsultantCommented:
it seems that you are not giving a value to @Reference

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Lokesh B RDeveloperCommented:

You are missing the Reference parameter in your code.

cmd.Parameters.Add("@Reference", OleDbType.VarChar).Value = "Ref"

Open in new window

KevinInformation TechnologyAuthor Commented:
Ah... thank you for catching this.
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