Showing an empty textbox using collections

Question

hi i got a little program working and i want the program to show in a messagebox that there is an empty textbox when you click a button. Unfortunately i can not get it working. Here is the code Public Class CollectionsForm Inherits System.Windows.Forms.Form #Region " Windows Form Designer generated code " Public Sub New() MyBase.New() 'This call is required by the Windows Form Designer. InitializeComponent() 'Add any initialization after the InitializeComponent() call End Sub 'Form overrides dispose to clean up the component list. Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean) If disposing Then If Not (components Is Nothing) Then components.Dispose() End If End If MyBase.Dispose(disposing) End Sub 'Required by the Windows Form Designer Private components As System.ComponentModel.IContainer 'NOTE: The following procedure is required by the Windows Form Designer 'It can be modified using the Windows Form Designer. 'Do not modify it using the code editor. Friend WithEvents TotalLabel As System.Windows.Forms.Label Friend WithEvents AddButton As System.Windows.Forms.Button Friend WithEvents TitleLabel As System.Windows.Forms.Label Friend WithEvents JewelCasesTextbox As System.Windows.Forms.TextBox Friend WithEvents JewelLabel As System.Windows.Forms.Label Friend WithEvents MP3sTextbox As System.Windows.Forms.TextBox Friend WithEvents MP3Label As System.Windows.Forms.Label Friend WithEvents DVDsTextbox As System.Windows.Forms.TextBox Friend WithEvents DVDLabel As System.Windows.Forms.Label Friend WithEvents CDsTextbox As System.Windows.Forms.TextBox Friend WithEvents CDLabel As System.Windows.Forms.Label Private Sub InitializeComponent() Me.TotalLabel = New System.Windows.Forms.Label Me.AddButton = New System.Windows.Forms.Button Me.TitleLabel = New System.Windows.Forms.Label Me.JewelCasesTextbox = New System.Windows.Forms.TextBox Me.JewelLabel = New System.Windows.Forms.Label Me.MP3sTextbox = New System.Windows.Forms.TextBox Me.MP3Label = New System.Windows.Forms.Label Me.DVDsTextbox = New System.Windows.Forms.TextBox Me.DVDLabel = New System.Windows.Forms.Label Me.CDsTextbox = New System.Windows.Forms.TextBox Me.CDLabel = New System.Windows.Forms.Label Me.SuspendLayout() ' 'TotalLabel ' Me.TotalLabel.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D Me.TotalLabel.Location = New System.Drawing.Point(112, 312) Me.TotalLabel.Name = "TotalLabel" Me.TotalLabel.Size = New System.Drawing.Size(160, 23) Me.TotalLabel.TabIndex = 21 ' 'AddButton ' Me.AddButton.Location = New System.Drawing.Point(144, 360) Me.AddButton.Name = "AddButton" Me.AddButton.Size = New System.Drawing.Size(75, 40) Me.AddButton.TabIndex = 20 Me.AddButton.Text = "&Add" ' 'TitleLabel ' Me.TitleLabel.AutoSize = True Me.TitleLabel.Font = New System.Drawing.Font("Microsoft Sans Serif", 14.0!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.TitleLabel.Location = New System.Drawing.Point(142, 35) Me.TitleLabel.Name = "TitleLabel" Me.TitleLabel.Size = New System.Drawing.Size(129, 25) Me.TitleLabel.TabIndex = 19 Me.TitleLabel.Text = "Add Them Up" ' 'JewelCasesTextbox ' Me.JewelCasesTextbox.Font = New System.Drawing.Font("Microsoft Sans Serif", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.JewelCasesTextbox.Location = New System.Drawing.Point(222, 267) Me.JewelCasesTextbox.Name = "JewelCasesTextbox" Me.JewelCasesTextbox.TabIndex = 18 Me.JewelCasesTextbox.Text = "" ' 'JewelLabel ' Me.JewelLabel.AutoSize = True Me.JewelLabel.Location = New System.Drawing.Point(86, 267) Me.JewelLabel.Name = "JewelLabel" Me.JewelLabel.Size = New System.Drawing.Size(68, 16) Me.JewelLabel.TabIndex = 17 Me.JewelLabel.Text = "&Jewel Cases" ' 'MP3sTextbox ' Me.MP3sTextbox.Font = New System.Drawing.Font("Microsoft Sans Serif", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.MP3sTextbox.Location = New System.Drawing.Point(222, 211) Me.MP3sTextbox.Name = "MP3sTextbox" Me.MP3sTextbox.TabIndex = 16 Me.MP3sTextbox.Text = "" ' 'MP3Label ' Me.MP3Label.AutoSize = True Me.MP3Label.Location = New System.Drawing.Point(86, 211) Me.MP3Label.Name = "MP3Label" Me.MP3Label.Size = New System.Drawing.Size(36, 16) Me.MP3Label.TabIndex = 15 Me.MP3Label.Text = "&MP 3s" ' 'DVDsTextbox ' Me.DVDsTextbox.Font = New System.Drawing.Font("Microsoft Sans Serif", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.DVDsTextbox.Location = New System.Drawing.Point(222, 155) Me.DVDsTextbox.Name = "DVDsTextbox" Me.DVDsTextbox.TabIndex = 14 Me.DVDsTextbox.Text = "" ' 'DVDLabel ' Me.DVDLabel.AutoSize = True Me.DVDLabel.Location = New System.Drawing.Point(86, 155) Me.DVDLabel.Name = "DVDLabel" Me.DVDLabel.Size = New System.Drawing.Size(34, 16) Me.DVDLabel.TabIndex = 13 Me.DVDLabel.Text = "&DVDs" ' 'CDsTextbox ' Me.CDsTextbox.Font = New System.Drawing.Font("Microsoft Sans Serif", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.CDsTextbox.Location = New System.Drawing.Point(222, 99) Me.CDsTextbox.Name = "CDsTextbox" Me.CDsTextbox.TabIndex = 12 Me.CDsTextbox.Text = "" ' 'CDLabel ' Me.CDLabel.AutoSize = True Me.CDLabel.Location = New System.Drawing.Point(86, 99) Me.CDLabel.Name = "CDLabel" Me.CDLabel.Size = New System.Drawing.Size(26, 16) Me.CDLabel.TabIndex = 11 Me.CDLabel.Text = "&CDs" ' 'CollectionsForm ' Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(408, 438) Me.Controls.Add(Me.TotalLabel) Me.Controls.Add(Me.AddButton) Me.Controls.Add(Me.TitleLabel) Me.Controls.Add(Me.JewelCasesTextbox) Me.Controls.Add(Me.JewelLabel) Me.Controls.Add(Me.MP3sTextbox) Me.Controls.Add(Me.MP3Label) Me.Controls.Add(Me.DVDsTextbox) Me.Controls.Add(Me.DVDLabel) Me.Controls.Add(Me.CDsTextbox) Me.Controls.Add(Me.CDLabel) Me.Name = "CollectionsForm" Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen Me.Text = "Add Them Up" Me.ResumeLayout(False) End Sub #End Region Private textboxcollection As New Collection Private Sub CollectionsForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load textboxcollection.Add(CDsTextbox) textboxcollection.Add(DVDsTextbox) textboxcollection.Add(MP3sTextbox) textboxcollection.Add(JewelCasesTextbox) End Sub Private Sub totallabelclear(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CDsTextbox.TextChanged, _ DVDsTextbox.TextChanged, MP3sTextbox.TextChanged, JewelCasesTextbox.TextChanged TotalLabel.Text = String.Empty End Sub Private Sub AddButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AddButton.Click Dim objtextboxes As New TextBox Dim dectotal As Decimal, decsum As Decimal Try For Each objtextboxes In textboxcollection dectotal = objtextboxes.Text decsum += dectotal TotalLabel.Text = decsum Next objtextboxes Catch MessageBox.Show("Each textbox must contain a number" & ControlChars.NewLine & ControlChars.NewLine & "Check the value of " & objtextboxes.Text) End Try End Sub ------- it has to do with the 3rd last line but im really not sure how to fix it any help is appreciated :)