[RESOLVED] Object reference not set to an instance of an object

[Chrissy]

Hello,

I am getting an error when trying to update a combox. The error I get is "Object reference not set to an instance of an object". I have to click "OK" a couple of times, then the form loads and actually shows the items in the combobox. Any help is appreciated.

Thank you!!


This is in my form load event where I want to update the combobox.

Dim TaxProj As New clsTaxEntity
TaxProj.UpdateTaxProjectionCombobox(cmbTax)

Public Sub UpdateTaxProjectionCombobox(ByRef cmbX As ComboBox)
        Try

            Dim desc As New ArrayList
            Dim rsTax As New clsSQLData

            cmbX.Items.Clear()

            rsTax.ExecuteQuery("SELECT projection_year , tax_desc , ktax FROM tax_projection ORDER BY Projection_year")

            For Each drTax As DataRow In rsTax.sqlDataSet.Tables(0).Rows
                desc.Add(New clsComboTag(String.Format("{0} {1}", drTax("projection_year").ToString.PadRight(10), drTax("tax_desc")), drTax("ktax").ToString))
            Next

            cmbX.DataSource = desc            'This is where I get the error
            cmbX.DisplayMember = "Description"
            cmbX.ValueMember = "Value"

            rsTax = Nothing

        Catch ex As Exception
            MsgBox(ex.Message, MsgBoxStyle.Exclamation)
        End Try
    End Sub

Imports System.Windows.Forms
Public Class clsComboTag

    Private StringDesc As String
    Private ValueID As String

    Public Sub New(ByVal desc As String, ByVal value As String)

        Me.StringDesc = desc
        Me.ValueID = value

    End Sub

    Public Property Description() As String
        Get
            Return StringDesc
        End Get
        Set(ByVal value As String)
            StringDesc = value
        End Set
    End Property

    Public Property Value() As String
        Get
            Return ValueID
        End Get
        Set(ByVal value As String)
            ValueID = value
        End Set
    End Property

End Class