Form with a Chart does not display properly

Question

Hi All:

I am using VB.Net 2008. I posted a similar thread a while ago on another forum (which never got answered), and since then I have realized that the problem is with the chart.  So, I am posting it here in hopes that someone can tell me what is wrong.  I am sorry about the double posting.

I have a form which has several textboxes, comboboxes and a chart, with 5 series (please see the Design code.  I am sorry to have done it this way, as I do not know how to attach a file to these posts).  When I run the program to display the form, the form displays completely white for about a second or so, and then it draws the controls on it. If I delete the chart, all is fine, and the form displays instantaneously.  Is there a way dispaly the form correctly from the start? Thank you;

Bob

<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class FrmCircle
    Inherits System.Windows.Forms.Form
    'Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        Try
            If disposing AndAlso components IsNot Nothing Then
                components.Dispose()
            End If
        Finally
            MyBase.Dispose(disposing)
        End Try
    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.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Dim ChartArea1 As System.Windows.Forms.DataVisualization.Charting.ChartArea = New System.Windows.Forms.DataVisualization.Charting.ChartArea
        Dim Legend1 As System.Windows.Forms.DataVisualization.Charting.Legend = New System.Windows.Forms.DataVisualization.Charting.Legend
        Dim Series1 As System.Windows.Forms.DataVisualization.Charting.Series = New System.Windows.Forms.DataVisualization.Charting.Series
        Dim Series2 As System.Windows.Forms.DataVisualization.Charting.Series = New System.Windows.Forms.DataVisualization.Charting.Series
        Dim Series3 As System.Windows.Forms.DataVisualization.Charting.Series = New System.Windows.Forms.DataVisualization.Charting.Series
        Dim Series4 As System.Windows.Forms.DataVisualization.Charting.Series = New System.Windows.Forms.DataVisualization.Charting.Series
        Dim Series5 As System.Windows.Forms.DataVisualization.Charting.Series = New System.Windows.Forms.DataVisualization.Charting.Series
        Dim resources As System.ComponentModel.ComponentResourceManager = New System.ComponentModel.ComponentResourceManager(GetType(FrmCircle))
        Me.BtnClose = New System.Windows.Forms.Button
        Me.BtnDrawGraph = New System.Windows.Forms.Button
        Me.GroupBox1 = New System.Windows.Forms.GroupBox
        Me.TextBox4 = New System.Windows.Forms.TextBox
        Me.Label4 = New System.Windows.Forms.Label
        Me.TextBox3 = New System.Windows.Forms.TextBox
        Me.Label3 = New System.Windows.Forms.Label
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.Label2 = New System.Windows.Forms.Label
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.Label1 = New System.Windows.Forms.Label
        Me.ComboBox1 = New System.Windows.Forms.ComboBox
        Me.GroupBox2 = New System.Windows.Forms.GroupBox
        Me.RadioButton2 = New System.Windows.Forms.RadioButton
        Me.RadioButton1 = New System.Windows.Forms.RadioButton
        Me.TextBox5 = New System.Windows.Forms.TextBox
        Me.Label5 = New System.Windows.Forms.Label
        Me.ComboBox2 = New System.Windows.Forms.ComboBox
        Me.Chart1 = New System.Windows.Forms.DataVisualization.Charting.Chart
        Me.GroupBox1.SuspendLayout()
        Me.GroupBox2.SuspendLayout()
        CType(Me.Chart1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'BtnClose
        '
        Me.BtnClose.DialogResult = System.Windows.Forms.DialogResult.Cancel
        Me.BtnClose.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.BtnClose.Location = New System.Drawing.Point(657, 434)
        Me.BtnClose.Name = "BtnClose"
        Me.BtnClose.Size = New System.Drawing.Size(94, 33)
        Me.BtnClose.TabIndex = 20
        Me.BtnClose.Text = "&Close"
        Me.BtnClose.UseVisualStyleBackColor = True
        '
        'BtnDrawGraph
        '
        Me.BtnDrawGraph.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.BtnDrawGraph.Location = New System.Drawing.Point(520, 434)
        Me.BtnDrawGraph.Name = "BtnDrawGraph"
        Me.BtnDrawGraph.Size = New System.Drawing.Size(131, 33)
        Me.BtnDrawGraph.TabIndex = 19
        Me.BtnDrawGraph.Text = "Draw Circle"
        Me.BtnDrawGraph.UseVisualStyleBackColor = True
        '
        'GroupBox1
        '
        Me.GroupBox1.Controls.Add(Me.TextBox4)
        Me.GroupBox1.Controls.Add(Me.Label4)
        Me.GroupBox1.Controls.Add(Me.TextBox3)
        Me.GroupBox1.Controls.Add(Me.Label3)
        Me.GroupBox1.Controls.Add(Me.TextBox2)
        Me.GroupBox1.Controls.Add(Me.Label2)
        Me.GroupBox1.Controls.Add(Me.TextBox1)
        Me.GroupBox1.Controls.Add(Me.Label1)
        Me.GroupBox1.Controls.Add(Me.ComboBox1)
        Me.GroupBox1.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.GroupBox1.Location = New System.Drawing.Point(12, 12)
        Me.GroupBox1.Name = "GroupBox1"
        Me.GroupBox1.Size = New System.Drawing.Size(344, 202)
        Me.GroupBox1.TabIndex = 0
        Me.GroupBox1.TabStop = False
        Me.GroupBox1.Text = "Draw circle using:"
        '
        'TextBox4
        '
        Me.TextBox4.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.TextBox4.Location = New System.Drawing.Point(100, 154)
        Me.TextBox4.Name = "TextBox4"
        Me.TextBox4.Size = New System.Drawing.Size(227, 22)
        Me.TextBox4.TabIndex = 9
        '
        'Label4
        '
        Me.Label4.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label4.Location = New System.Drawing.Point(6, 157)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(88, 16)
        Me.Label4.TabIndex = 8
        Me.Label4.Text = "Label4"
        Me.Label4.TextAlign = System.Drawing.ContentAlignment.TopRight
        '
        'TextBox3
        '
        Me.TextBox3.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.TextBox3.Location = New System.Drawing.Point(100, 126)
        Me.TextBox3.Name = "TextBox3"
        Me.TextBox3.Size = New System.Drawing.Size(227, 22)
        Me.TextBox3.TabIndex = 7
        '
        'Label3
        '
        Me.Label3.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label3.Location = New System.Drawing.Point(6, 129)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(88, 16)
        Me.Label3.TabIndex = 6
        Me.Label3.Text = "Label3"
        Me.Label3.TextAlign = System.Drawing.ContentAlignment.TopRight
        '
        'TextBox2
        '
        Me.TextBox2.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.TextBox2.Location = New System.Drawing.Point(99, 98)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(227, 22)
        Me.TextBox2.TabIndex = 5
        '
        'Label2
        '
        Me.Label2.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label2.Location = New System.Drawing.Point(6, 101)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(88, 16)
        Me.Label2.TabIndex = 4
        Me.Label2.Text = "Label2"
        Me.Label2.TextAlign = System.Drawing.ContentAlignment.TopRight
        '
        'TextBox1
        '
        Me.TextBox1.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.TextBox1.Location = New System.Drawing.Point(99, 70)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(227, 22)
        Me.TextBox1.TabIndex = 3
        '
        'Label1
        '
        Me.Label1.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label1.Location = New System.Drawing.Point(6, 73)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(88, 16)
        Me.Label1.TabIndex = 2
        Me.Label1.Text = "Label1"
        Me.Label1.TextAlign = System.Drawing.ContentAlignment.TopRight
        '
        'ComboBox1
        '
        Me.ComboBox1.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList
        Me.ComboBox1.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.ComboBox1.FormattingEnabled = True
        Me.ComboBox1.Location = New System.Drawing.Point(99, 22)
        Me.ComboBox1.Name = "ComboBox1"
        Me.ComboBox1.Size = New System.Drawing.Size(228, 24)
        Me.ComboBox1.TabIndex = 1
        '
        'GroupBox2
        '
        Me.GroupBox2.Controls.Add(Me.RadioButton2)
        Me.GroupBox2.Controls.Add(Me.RadioButton1)
        Me.GroupBox2.Controls.Add(Me.TextBox5)
        Me.GroupBox2.Controls.Add(Me.Label5)
        Me.GroupBox2.Controls.Add(Me.ComboBox2)
        Me.GroupBox2.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.GroupBox2.Location = New System.Drawing.Point(12, 240)
        Me.GroupBox2.Name = "GroupBox2"
        Me.GroupBox2.Size = New System.Drawing.Size(344, 162)
        Me.GroupBox2.TabIndex = 10
        Me.GroupBox2.TabStop = False
        Me.GroupBox2.Text = "To find point A (or B), use the additional needed information from:"
        '
        'RadioButton2
        '
        Me.RadioButton2.AutoSize = True
        Me.RadioButton2.Location = New System.Drawing.Point(219, 126)
        Me.RadioButton2.Name = "RadioButton2"
        Me.RadioButton2.Size = New System.Drawing.Size(107, 20)
        Me.RadioButton2.TabIndex = 15
        Me.RadioButton2.TabStop = True
        Me.RadioButton2.Text = "RadioButton2"
        Me.RadioButton2.UseVisualStyleBackColor = True
        '
        'RadioButton1
        '
        Me.RadioButton1.AutoSize = True
        Me.RadioButton1.Location = New System.Drawing.Point(35, 126)
        Me.RadioButton1.Name = "RadioButton1"
        Me.RadioButton1.Size = New System.Drawing.Size(107, 20)
        Me.RadioButton1.TabIndex = 14
        Me.RadioButton1.TabStop = True
        Me.RadioButton1.Text = "RadioButton1"
        Me.RadioButton1.UseVisualStyleBackColor = True
        '
        'TextBox5
        '
        Me.TextBox5.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.TextBox5.Location = New System.Drawing.Point(99, 85)
        Me.TextBox5.Name = "TextBox5"
        Me.TextBox5.Size = New System.Drawing.Size(227, 22)
        Me.TextBox5.TabIndex = 13
        '
        'Label5
        '
        Me.Label5.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label5.Location = New System.Drawing.Point(8, 88)
        Me.Label5.Name = "Label5"
        Me.Label5.Size = New System.Drawing.Size(83, 16)
        Me.Label5.TabIndex = 12
        Me.Label5.Text = "Label5"
        Me.Label5.TextAlign = System.Drawing.ContentAlignment.TopRight
        '
        'ComboBox2
        '
        Me.ComboBox2.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList
        Me.ComboBox2.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.ComboBox2.FormattingEnabled = True
        Me.ComboBox2.Location = New System.Drawing.Point(98, 39)
        Me.ComboBox2.Name = "ComboBox2"
        Me.ComboBox2.Size = New System.Drawing.Size(228, 24)
        Me.ComboBox2.TabIndex = 11
        '
        'Chart1
        '
        ChartArea1.Name = "ChartArea1"
        Me.Chart1.ChartAreas.Add(ChartArea1)
        Legend1.Enabled = False
        Legend1.Name = "Legend1"
        Me.Chart1.Legends.Add(Legend1)
        Me.Chart1.Location = New System.Drawing.Point(371, 22)
        Me.Chart1.Name = "Chart1"
        Series1.ChartArea = "ChartArea1"
        Series1.Legend = "Legend1"
        Series1.Name = "Series1"
        Series2.BorderColor = System.Drawing.Color.Yellow
        Series2.ChartArea = "ChartArea1"
        Series2.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastPoint
        Series2.Color = System.Drawing.Color.Yellow
        Series2.Legend = "Legend1"
        Series2.MarkerSize = 6
        Series2.Name = "Series2"
        Series3.BorderWidth = 2
        Series3.ChartArea = "ChartArea1"
        Series3.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.Line
        Series3.Color = System.Drawing.Color.Cyan
        Series3.Font = New System.Drawing.Font("Microsoft Sans Serif", 11.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Series3.Legend = "Legend1"
        Series3.MarkerBorderColor = System.Drawing.Color.Cyan
        Series3.MarkerColor = System.Drawing.Color.Cyan
        Series3.MarkerSize = 7
        Series3.MarkerStyle = System.Windows.Forms.DataVisualization.Charting.MarkerStyle.Diamond
        Series3.Name = "Series3"
        Series4.BorderWidth = 2
        Series4.ChartArea = "ChartArea1"
        Series4.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.Line
        Series4.Color = System.Drawing.Color.Magenta
        Series4.Font = New System.Drawing.Font("Microsoft Sans Serif", 11.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Series4.Legend = "Legend1"
        Series4.MarkerBorderColor = System.Drawing.Color.Magenta
        Series4.MarkerColor = System.Drawing.Color.Magenta
        Series4.MarkerSize = 7
        Series4.MarkerStyle = System.Windows.Forms.DataVisualization.Charting.MarkerStyle.Diamond
        Series4.Name = "Series4"
        Series5.BorderColor = System.Drawing.Color.Yellow
        Series5.ChartArea = "ChartArea1"
        Series5.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastPoint
        Series5.Color = System.Drawing.Color.Yellow
        Series5.Legend = "Legend1"
        Series5.MarkerBorderColor = System.Drawing.Color.Yellow
        Series5.MarkerColor = System.Drawing.Color.Yellow
        Series5.MarkerStyle = System.Windows.Forms.DataVisualization.Charting.MarkerStyle.Square
        Series5.Name = "Series5"
        Me.Chart1.Series.Add(Series1)
        Me.Chart1.Series.Add(Series2)
        Me.Chart1.Series.Add(Series3)
        Me.Chart1.Series.Add(Series4)
        Me.Chart1.Series.Add(Series5)
        Me.Chart1.Size = New System.Drawing.Size(380, 380)
        Me.Chart1.TabIndex = 18
        Me.Chart1.TabStop = False
        Me.Chart1.Text = "Chart1"
        '
        'FrmCircle
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.AutoScroll = True
        Me.ClientSize = New System.Drawing.Size(761, 484)
        Me.Controls.Add(Me.Chart1)
        Me.Controls.Add(Me.GroupBox2)
        Me.Controls.Add(Me.GroupBox1)
        Me.Controls.Add(Me.BtnClose)
        Me.Controls.Add(Me.BtnDrawGraph)
        Me.Icon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon)
        Me.MaximumSize = New System.Drawing.Size(777, 522)
        Me.Name = "FrmCircle"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent
        Me.Text = "Circle"
        Me.GroupBox1.ResumeLayout(False)
        Me.GroupBox1.PerformLayout()
        Me.GroupBox2.ResumeLayout(False)
        Me.GroupBox2.PerformLayout()
        CType(Me.Chart1, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)
    End Sub
    Friend WithEvents BtnClose As System.Windows.Forms.Button
    Friend WithEvents BtnDrawGraph As System.Windows.Forms.Button
    Friend WithEvents GroupBox1 As System.Windows.Forms.GroupBox
    Friend WithEvents TextBox3 As System.Windows.Forms.TextBox
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox
    Friend WithEvents TextBox4 As System.Windows.Forms.TextBox
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents GroupBox2 As System.Windows.Forms.GroupBox
    Friend WithEvents TextBox5 As System.Windows.Forms.TextBox
    Friend WithEvents Label5 As System.Windows.Forms.Label
    Friend WithEvents ComboBox2 As System.Windows.Forms.ComboBox
    Friend WithEvents Chart1 As System.Windows.Forms.DataVisualization.Charting.Chart
    Friend WithEvents RadioButton2 As System.Windows.Forms.RadioButton
    Friend WithEvents RadioButton1 As System.Windows.Forms.RadioButton
End Class

Public Enum cntl
        L1 = 1
        L2 = 2
        L3 = 3
        L4 = 4
        L5 = 5
        GB = 9
        CB = 10
    End Enum
    Dim cmb1Index As Int16 = -1
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        ComboBox1.Items.Add("Points A and B")
        ComboBox1.Items.Add("Center and Point A")
        ComboBox1.Items.Add("Center and Point B")
        ComboBox1.Items.Add("Center and Radius")
        ComboBox1.Items.Add("Center and " & "S" & "1")
        ComboBox1.Items.Add("Center and " & "S" & "2")
        ComboBox1.Items.Add("S" & "1 and Radius")
        ComboBox1.Items.Add("S" & "2 and Radius")
        ComboBox1.Items.Add("Point A and " & "S" & "1")
        ComboBox1.Items.Add("Point A and " & "S" & "2")
        ComboBox1.Items.Add("Point B and " & "S" & "1")
        ComboBox1.Items.Add("Point B and " & "S" & "2")
        ComboBox1.Items.Add("S" & "1 and " & "S" & "2")
        ComboBox1.Items.Add("Points A' and B'")
        ComboBox1.SelectedIndex = 0
        RadioButton1.Checked = True
        RadioButton1.Text = "T" & "xy is positive"
        RadioButton2.Text = "T" & "xy is negative"
    End Sub
    Private Sub BtnClose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnClose.Click
        Me.Close()
        If FormIsOpen = False Then Me.Dispose()
    End Sub
    Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
        Dim k As Int16
        k = ComboBox1.SelectedIndex
        If k = cmb1Index Then Exit Sub
        If k = 0 Then
            ShowControl(1, True, "S" & "x :", "")
            ShowControl(2, True, "S" & "y :", "")
            ShowControl(3, True, "T" & "xy :", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 1 Then
            ShowControl(1, True, "S" & " ave :", "")
            ShowControl(2, True, "S" & "x :", "")
            ShowControl(3, True, "T" & "xy :", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 2 Then
            ShowControl(1, True, "S" & " ave :", "")
            ShowControl(2, True, "S" & "y :", "")
            ShowControl(3, True, "T" & "xy :", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 3 Then
            ShowControl(1, True, "S" & " ave :", "")
            ShowControl(2, True, "Radius :", "")
            ShowControl(3, False, "", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 4 Then
            ShowControl(1, True, "S" & " ave :", "")
            ShowControl(2, True, "S" & "1 :", "")
            ShowControl(3, False, "", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 5 Then
            ShowControl(1, True, "S" & " ave :", "")
            ShowControl(2, True, "S" & "2 :", "")
            ShowControl(3, False, "", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 6 Then
            ShowControl(1, True, "S" & "1 :", "")
            ShowControl(2, True, "Radius :", "")
            ShowControl(3, False, "", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 7 Then
            ShowControl(1, True, "S" & "2 :", "")
            ShowControl(2, True, "Radius :", "")
            ShowControl(3, False, "", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 8 Then
            ShowControl(1, True, "S" & "x :", "")
            ShowControl(2, True, "T" & "xy :", "")
            ShowControl(3, True, "S" & "1 :", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 9 Then
            ShowControl(1, True, "S" & "x :", "")
            ShowControl(2, True, "T" & "xy :", "")
            ShowControl(3, True, "S" & "2 :", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 10 Then
            ShowControl(1, True, "S" & "y :", "")
            ShowControl(2, True, "T" & "xy :", "")
            ShowControl(3, True, "S" & "1 :", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 11 Then
            ShowControl(1, True, "S" & "y :", "")
            ShowControl(2, True, "T" & "xy :", "")
            ShowControl(3, True, "S" & "2 :", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 12 Then
            ShowControl(1, True, "S" & "1 :", "")
            ShowControl(2, True, "S" & "2 :", "")
            ShowControl(3, False, "", "")
            ShowControl(4, True, "A" & " (Optional) :", "")
        ElseIf k = 13 Then
            ShowControl(1, True, "S" & "x' :", "")
            ShowControl(2, True, "S" & "y' :", "")
            ShowControl(3, True, "T" & "x'y' :", "")
            ShowControl(4, True, "A" & " :", "")
        End If
        Select Case k
            Case 3, 6, 12
                ComboBox2.Items.Clear()
                ComboBox2.Items.Add("S" & "x")
                ComboBox2.Items.Add("S" & "y")
                ComboBox2.Items.Add("A" & " P1")
                ComboBox2.SelectedIndex = 0
                ShowControl(5, True, ComboBox2.Text & " :", "")
                ShowControl(cntl.GB, True, "Use the additional needed information from", "Use the additional needed information from")
            Case 5, 7
                ComboBox2.Items.Clear()
                ComboBox2.Items.Add("S" & "x")
                ComboBox2.Items.Add("S" & "y")
                ComboBox2.Items.Add("A" & " P2")
                ComboBox2.SelectedIndex = 0
                ShowControl(5, True, ComboBox2.Text & " :", "")
                ShowControl(cntl.GB, True, "Use the additional needed information from", "Use the additional needed information from")
            Case Else
                ShowControl(cntl.GB, False, "", "")
                ComboBox2.SelectedIndex = -1
        End Select
        If RadioButton1.Checked = False Then RadioButton1.Checked = True
        cmb1Index = ComboBox1.SelectedIndex
    End Sub
    Private Sub ShowControl(ByVal ct As Int16, ByVal Status As Boolean, ByVal msg1 As String, Optional ByVal msg2 As String = "")
        Dim obj1 As Object, obj2 As Object
        Select Case ct
            Case 1
                obj1 = Label1
                obj2 = TextBox1
            Case 2
                obj1 = Label2
                obj2 = TextBox2
            Case 3
                obj1 = Label3
                obj2 = TextBox3
            Case 4
                obj1 = Label4
                obj2 = TextBox4
            Case 5
                obj1 = Label5
                obj2 = TextBox5
            Case 9
                obj1 = GroupBox2
                obj2 = GroupBox2
        End Select
        If Status = False Then
            obj1.visible = False
            obj2.visible = False
        Else
            If obj1.visible = False Then
                obj1.visible = True
                obj2.visible = True
            End If
            obj1.text = msg1
            obj2.text = msg2
        End If
    End Sub

Answer 1

Hi All:

I found a work around on this issue and I believe this is a bug in the control. If I create teh chart control as the very first control on my form, and then create the other controls, the form displays properly. However, if I create a control first and then the chart, this strange behavior surfaces. So, for now, I had to recreate my entire form, and making sure the chart was the very first control. Also, I did not copy and paste the other controls, but I manually recreated them from scratch. And now this new form displays properly. The old form (where the controls where created before the chart) still has the issue. Hopefully, someone from Microsoft (a developer) can look at this issue.

Bob