Create Dynamic Controls (eg. Label & Text Box)

btcomp · August 5th, 2012, 03:47 PM

I am working on another of my High Voltage calculations. Last weekend Imar helped me with Trying to increment a counte variable and persistence of their values using
'viewstate' when the page is reloaded.

On this calculation I have the user enter the number of (x,y) values in two textboxes, and I also have a label. (see code below). In the old GW-Basic code the user enters the pair as x, y and when finished (up to 30 values) they enter 999, 999 to indicate they are done entering data. I have the page start with asking how many data pairs to enter. Then the counter they enter is persisted using 'viewstate' so that when the form is submitted the counter has the number of (x,y pairs.)

I am putting this into a table using two columns, 60% width with the label in the left column and the two text boxes in the right column. So depending on the number of x,y data points I want to determine the number of labels and textboxes to show dynamically on the page along with additional table rows.

HTML Code:

<%@ Page Title="" Language="VB" MasterPageFile="~/CoilCalcsMaster.master" AutoEventWireup="false" CodeFile="c-fit.aspx.vb" Inherits="c_fit" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
  <style type="text/css">
    .style5
    {
      width: 60%;
    }
    .style6
    {
      height: 21px;
    }
  </style>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

<p style="text-align: center">
      <span class="style2">Least Squares Curve Fitting</span>
      <br class="style2" />
       Property of Company</p>
      <br />



  <table class="style5">
    <tr>
      <td colspan="2">
        <asp:Label ID="lblTitle" runat="server" 
          Text="Enter the x, y, coordinates of up to 30 data pairs."></asp:Label>
      </td>
    </tr>
    <tr>
      <td class="style6">
        </td>
      <td class="style6">
        </td>
    </tr>
    <tr>
      <td>
     <asp:Label ID="lblNoDataPrs" runat="server" Text="How many data pairs?" 
        ViewStateMode="Enabled"></asp:Label></td>
  <td> 
  <asp:TextBox ID="txtNoDataPrs"
    runat="server" CssClass="LeftValueColumn"></asp:TextBox>
    &nbsp;&nbsp;&nbsp;&nbsp;<asp:Button ID="btnSubmit" runat="server" Text="Submit" />
        &nbsp;</td>
    </tr>
    <tr>
      <td>
        &nbsp;</td>
      <td>
        &nbsp;</td>
    </tr>
  </table>
  <table class="style5">
    <tr>
      <td>
        <asp:Label ID="lblXYPr1" runat="server" Text="Enter x & y values"></asp:Label>
      </td>
      <td>
        <asp:TextBox ID="txtX1" runat="server"></asp:TextBox>
&nbsp;
        <asp:TextBox ID="txtY1" runat="server"></asp:TextBox>
      </td>
    </tr>
  </table>
  <br />                      
  
</asp:Content>

btcomp · August 6th, 2012, 08:30 AM

I'm pretty excited, now I have a link and some code to work with. It doesn't work, because I just discovered how to do dynamic controls, but I know I have to figure out how to get my counter to persist, (i.e. 1 to 30). But I also have another exciting job I have to get ready to go to this morning, so I will just post what I have, both the VB and ASPX files, and hopefully work on later today.

The link to the great article I found is here: http://bytes.com/topic/asp-net/insig...ntrols-asp-net

Code:

Partial Class c_fit
    Inherits System.Web.UI.Page
  Private textBoxArrX(30) As TextBox
  Private textBoxArrY(30) As TextBox
  Private lblArrXY(30) As Label


  Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
    NoDataPrs = 1
    NoDataPrs = Val(txtNoDataPrs.Text)
    Dim count As Integer = 0

  End Sub


  Public Property NoDataPrs As Integer
    Get
      Dim o As Object = ViewState("NoDataPrs")
      If Not o Is Nothing Then
        Return CType(o, Integer)
      Else
        Return 0
      End If
    End Get
    Set(ByVal Value As Integer)
      ViewState("NoDataPrs") = Value
    End Set
  End Property

  Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init

    If Not Page.IsPostBack Then
    Else
    End If



    ' This event happens before any controls are initialized by ASP.NET'
    'The ViewState for objects has not been loaded.'
    'After this event happens, the ViewState is loaded for each control and the object's properties are filled with the values submitted.'

    'Creating the TextBox Objects that are dynamically shown in the web page'
    'according to the number selected from a DropDownList'
    For x As Integer = 1 To NoDataPrs
      textBoxArrX(x) = New TextBox
      textBoxArrX(x).ID = "Xvalue" + x.ToString
      textBoxArrX(x).Visible = False 'Initializing the TextBox so that it is not rendered in the browser 
      Pnl_TextBoxes.Controls.Add(textBoxArrX(x)) 'Adding the TextBox to the Panel that holds the text boxes.

      textBoxArrY(x) = New TextBox
      textBoxArrY(x).ID = "Xvalue" + x.ToString
      textBoxArrY(x).Visible = False 'Initializing the TextBox so that it is not rendered in the browser 
      Pnl_TextBoxes.Controls.Add(textBoxArrY(x)) 'Adding the TextBox to the Panel that holds the text boxes.

      lblArrXY(x) = New Label
      lblArrXY(x).ID = "Xvalue" + x.ToString
      lblArrXY(x).Text = "x, y values no. " & x
      lblArrXY(x).Visible = False 'Initializing the TextBox so that it is not rendered in the browser 
      Pnl_TextBoxes.Controls.Add(lblArrXY(x)) 'Adding the TextBox to the Panel that holds the text boxes.


    Next


  End Sub



End Class

HTML Code:

<%@ Page Title="" Language="VB" MasterPageFile="~/CoilCalcsMaster.master" AutoEventWireup="false" CodeFile="c-fit.aspx.vb" Inherits="c_fit" %>
<%@ Register tagprefix="uc1" Tagname="uc_label_textbox" src="~/Controls/uc_label_textbox.ascx" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
  <style type="text/css">
    .style5
    {
      width: 60%;
    }
    .style6
    {
      height: 21px;
    }
  </style>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

<p style="text-align: center">
      <span class="style2">Least Squares Curve Fitting</span>
      <br class="style2" />
       Property of Company</p>
      <br />



  <table class="style5">
    <tr>
      <td colspan="2">
        <asp:Label ID="lblTitle" runat="server" 
          Text="Enter the x, y, coordinates of up to 30 data pairs."></asp:Label>
      </td>
    </tr>
    <tr>
      <td class="style6">
        </td>
      <td class="style6">
        </td>
    </tr>
    <tr>
      <td>
     <asp:Label ID="lblNoDataPrs" runat="server" Text="How many data pairs?" 
        ViewStateMode="Enabled"></asp:Label></td>
  <td> 
  <asp:TextBox ID="txtNoDataPrs"
    runat="server" CssClass="LeftValueColumn"></asp:TextBox>
    &nbsp;&nbsp;&nbsp;&nbsp;<asp:Button ID="btnSubmit" runat="server" Text="Submit" />
        &nbsp;</td>
    </tr>
    <tr>
      <td>
        &nbsp;</td>
      <td>
        &nbsp;</td>
    </tr>
  </table>
  <table class="style5">
    <tr>
      <td>
        <asp:Label ID="lblxy1" runat="server" Text="Enter x & y values " Visible="False"></asp:Label><br />
        <asp:Label ID="lblxy2" runat="server" Text="Enter x & y values " Visible="False"></asp:Label><br />
        <asp:Label ID="lblxy3" runat="server" Text="Enter x & y values " Visible="False"></asp:Label><br />
        <asp:Label ID="lblxy4" runat="server" Text="Enter x & y values " Visible="False"></asp:Label><br />
        <asp:Label ID="lblxy5" runat="server" Text="Enter x & y values " Visible="False"></asp:Label><br />
        
      </td>
      <td>
        <asp:TextBox ID="txtX1" runat="server" Visible="False"></asp:TextBox>&nbsp;&nbsp;
        <asp:TextBox ID="txtY1" runat="server" Visible="False"></asp:TextBox><br />
        <asp:TextBox ID="txtX2" runat="server" Visible="False"></asp:TextBox>&nbsp;&nbsp;
        <asp:TextBox ID="txtY2" runat="server" Visible="False"></asp:TextBox><br />
        <asp:TextBox ID="txtX3" runat="server" Visible="False"></asp:TextBox>&nbsp;&nbsp;
        <asp:TextBox ID="txtY3" runat="server" Visible="False"></asp:TextBox><br />
        <asp:TextBox ID="txtX4" runat="server" Visible="False"></asp:TextBox>&nbsp;&nbsp;
        <asp:TextBox ID="txtY4" runat="server" Visible="False"></asp:TextBox><br />
        <asp:TextBox ID="txtX5" runat="server" Visible="False"></asp:TextBox>&nbsp;&nbsp;
        <asp:TextBox ID="txtY5" runat="server" Visible="False"></asp:TextBox><br />
&nbsp;
        
        
        
        
        
      </td>
    </tr>
  </table>
  <br />
  <br />                      
  <asp:Panel ID="Pnl_TextBoxes" runat="server">
  </asp:Panel>
</asp:Content>

btcomp · August 6th, 2012, 10:34 PM

I've got the info to make this work, but I am going to relax the rest of the evenig, and watch Jeff Daniels 'The Newsroom' great show on HBO if you get that. But I will post the finished code tomorrow if anyone is interested in it. Two concepts, one is data persistence, which I thank Imar for showing me a week ago, and then dynamically generating the labels, textboxes, and some literal things. The two jobs I have write now are biding for my time, and I shouldn't complain because work has been tough in Michigan, but you know you guys and gals help me, the least I can do is help back.

btcomp · September 25th, 2012, 02:52 PM

I have not forgotten that I would post the code here. I have been very busy programming this summer and I am hoping to finish this project. I had to work on other programs. So when I finish this I will post it.

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btcomp · October 15th, 2012, 07:26 PM

All right I finally have the two files for the Least Squares Curve Fitting. It may seem a bit overwhelming, but it is intuitive, as the buttons and boxes to use appear or are un-enabled as required.
Below is the vb code.

Code:

Imports System.Math
Partial Class c_fit
  Inherits System.Web.UI.Page
  Private textBoxArrX(30) As TextBox
  Private textBoxArrY(30) As TextBox
  Private lblArrXY(30) As Label
  Private MyLiteral(30) As LiteralControl
  Private MyLiteralSpace(30) As LiteralControl

  Dim I As Single = 0
  Dim L As Single = 0
  Dim Q As Single = 6

  Dim M As Single = 0
  Dim T As Single = 0
  Dim G As Single = 0

  Dim YV As Single = 0
  Dim XV As Single = 0
  Dim P(30) As Single

  Dim V(30) As Single
  Dim N As Integer = 0

  Public Property NoDataPrs As Integer
    Get
      Dim o As Object = ViewState("NoDataPrs")
      If Not o Is Nothing Then
        Return CType(o, Integer)
      Else
        Return 0
      End If
    End Get
    Set(ByVal Value As Integer)
      ViewState("NoDataPrs") = Value
    End Set
  End Property

  Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init

    If Not Page.IsPostBack Then
    Else



    End If
    ' This event happens before any controls are initialized by ASP.NET'
    'The ViewState for objects has not been loaded.'
    'After this event happens, the ViewState is loaded for each control and the object's properties are filled with the values submitted.'

    'Creating the TextBox Objects that are dynamically shown in the web page'
    'according to the number selected from a DropDownList'
    For x As Integer = 1 To 30

      lblArrXY(x) = New Label
      lblArrXY(x).ID = "XYlabel" + x.ToString
      lblArrXY(x).Text = "   x, y values no. " & x & "  "
      lblArrXY(x).Visible = False 'Initializing the TextBox so that it is not rendered in the browser 
      Pnl_TextBoxes.Controls.Add(lblArrXY(x)) 'Adding the TextBox to the Panel that holds the text boxes.

      textBoxArrX(x) = New TextBox
      textBoxArrX(x).ID = "Xvalue" + x.ToString
      textBoxArrX(x).Visible = False 'Initializing the TextBox so that it is not rendered in the browser 
      Pnl_TextBoxes.Controls.Add(textBoxArrX(x)) 'Adding the TextBox to the Panel that holds the text boxes.

      MyLiteralSpace(x) = New LiteralControl("  ")
      Pnl_TextBoxes.Controls.Add(MyLiteralSpace(x))

      textBoxArrY(x) = New TextBox
      textBoxArrY(x).ID = "Yvalue" + x.ToString
      textBoxArrY(x).Visible = False 'Initializing the TextBox so that it is not rendered in the browser 
      Pnl_TextBoxes.Controls.Add(textBoxArrY(x)) 'Adding the TextBox to the Panel that holds the text boxes.


      '  MyPanel.Controls.Add(New LiteralControl("<br>"))
      MyLiteral(x) = New LiteralControl("<br>")
      Pnl_TextBoxes.Controls.Add(MyLiteral(x))




    Next





  End Sub



  Protected Sub btnCalc_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnCalc.Click


    Dim str As New StringBuilder
    Dim X(30) As Single
    Dim Y(30) As Single
    Dim R(30) As Single

    Dim A(35, 35) As Single

    Dim J As Integer

    Dim D2 As Integer
    D2 = 2 * Val(txtDegPoly.Text)
    ' Dim N As Integer = 0
    ' N = Val(txtDegPoly.Text) + 1
    For i As Integer = 1 To textBoxArrY.Length - 1
      If textBoxArrY(i) IsNot Nothing Then
        str.Append(" " + textBoxArrY(i).Text) 'Grabbing the text from the TextBox...remember that at this stage the TextBox's Text property has already been set by ASP.NET according to its ViewState
      End If

      X(i) = Val(textBoxArrX(i).Text)
      Y(i) = Val(textBoxArrY(i).Text)
      textBoxArrX(i).Enabled = False
      textBoxArrY(i).Enabled = False


    Next

    Dim NP As Integer
    NP = NoDataPrs

    If Val(txtDegPoly.Text) < NP Then
      D2 = 2 * Val(txtDegPoly.Text)
    End If
    N = Val(txtDegPoly.Text) + 1


    For J = 1 To D2 : P(J) = 0 : For K = 1 To NP
        P(J) = P(J) + X(K) ^ J : Next K : Next J : P(0) = NP
    R(1) = 0 : For J = 1 To NP : R(1) = R(1) + Y(J)
    Next J

    If N <> 1 Then
      For J = 2 To N : R(J) = 0 : For K = 1 To NP
          R(J) = R(J) + Y(K) * X(K) ^ (J - 1)
        Next K
      Next J
    End If

    For J = 1 To N
      For K = 1 To N
        A(J, K) = P(J + K - 2)
      Next K
    Next J

    If N = 1 Then
      V(1) = R(1) / A(1, 1)
    Else
      For K = 1 To (N - 1)
        I = K + 1
        l = K

        If Abs(A(I, K)) > Abs(A(L, K)) Then
          l = I
        End If


        '********************Try this. 01Oct2012
        If Abs(A(I, K)) > Abs(A(L, K)) Then
          L = I
        End If

        While I < N
          If Abs(A(I, K)) > Abs(A(L, K)) Then
            L = I
          End If
          I = I + 1
        End While




        '********************Try this. 01Oct2012
        '   While I < N
        'I = I + 1
        'If Abs(A(I, K)) > Abs(A(L, K)) Then
        'L = I
        'End If
        'End While



        If L <> K Then

          For J = K To N
            Q = A(K, J)
            A(K, J) = A(L, J)
            A(L, J) = Q
          Next J

          Q = R(K)
          R(K) = R(L)
          R(L) = Q
        End If

        I = K + 1

        Q = A(I, K) / A(K, K) : A(I, K) = 0
        For J = K + 1 To N
          A(I, J) = A(I, J) - Q * A(K, J)
        Next

        R(I) = R(I) - Q * R(K)
        While I < N
          I += 1
          Q = A(I, K) / A(K, K) : A(I, K) = 0
          For J = K + 1 To N : A(I, J) = A(I, J) - Q * A(K, J) : Next
          R(I) = R(I) - Q * R(K)
        End While

      Next
      V(N) = R(N) / A(N, N) : For I = N - 1 To 1 Step -1
        Q = 0 : For J = I + 1 To N : Q = Q + A(I, J) * V(J)
          V(I) = (R(I) - Q) / A(I, I) : Next : Next

    End If

    'Showing in a label what was in the TextBoxes
    ' lbl_message.Text = "message: " + str.ToString ' This was for testing. Leave in, it might help me or the next programmer. BT-01Oct2012

    'Clear results so that one can re-enter new Degree of Polynomial. BT-01Oct2012
    lblXPowerRslt.Text = ""
    lblCoefficientRslt.Text = ""

    lblXPower.Text = "X Power "
    lblCoefficient.Text = "Coefficient "

    For J = 1 To N
      lblXPowerRslt.Text = lblXPowerRslt.Text & (J - 1).ToString & "<BR />"
      lblCoefficientRslt.Text = lblCoefficientRslt.Text & V(J) & "<BR />"

    Next J

    'Print last statement of the first set of results after a few calculations. BT-01Oct2012


    Q = 0 : For J = 1 To NP : Q = Q + Y(J) : Next : M = Q / NP : T = 0 : G = 0
    For J = 1 To NP : Q = 0 : For K = 1 To N : Q = Q + V(K) * X(J) ^ (K - 1) : Next
      T = T + (Y(J) - Q) ^ 2 : G = G + (Y(J) - M) ^ 2 : Next
    If G = 0 Then
      T = 100
    Else
      T = 100 * Sqrt(1 - T / G)
    End If

    'Now print 'Percent Goodness of fit'
    lblPercentGoodness.Visible = True
    lblPercentGoodness.Text = "Percent goodness of fit = " & T.ToString

    'Now the last part, do you want individual y values for entered x values?
    lblMorePoints.Visible = True
    MorePoints.Visible = True



  End Sub





  Protected Sub btnSubmitNoDatPoints_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmitNoDatPoints.Click


    NoDataPrs = 1
    NoDataPrs = Val(txtNoDataPrs.Text)
    Dim count As Integer = 0


    ' This event happens before any controls are initialized by ASP.NET'
    'The ViewState for objects has not been loaded.'
    'After this event happens, the ViewState is loaded for each control and the object's properties are filled with the values submitted.'

    'Creating the TextBox Objects that are dynamically shown in the web page'
    'according to the number selected from a DropDownList'
    For j As Integer = 1 To NoDataPrs


      lblArrXY(j).Visible = True 'Initializing the TextBox so that it is not rendered in the browser 


      textBoxArrX(j).Visible = True 'Initializing the TextBox so that it is not rendered in the browser 

      textBoxArrY(j).Visible = True 'Initializing the TextBox so that it is not rendered in the browser 

      textBoxArrX(j).CssClass = "LeftValueColumn"
      textBoxArrY(j).CssClass = "LeftValueColumn"
      textBoxArrX(j).Width = "50"
      textBoxArrY(j).Width = "50"

      lblDegPoly.Text = "Enter Degree of Polynomial to be fitted. (0 to 4)"
      lblDegPoly.Visible = True
      txtDegPoly.Visible = True
    Next

    txtNoDataPrs.Enabled = False
    btnSubmitNoDatPoints.Enabled = False
    btnCalc.Enabled = True



  End Sub

  

  Protected Sub MorePoints_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles MorePoints.SelectedIndexChanged
    If MorePoints.SelectedIndex = 0 Then
      txtXValue.Visible = True
      btnCalculateY.Visible = True

    Else
      txtXValue.Visible = False
      btnCalculateY.Visible = False
    End If
  End Sub

  Protected Sub btnCalculateY_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnCalculateY.Click

    

    XV = Val(txtXValue.Text)

    YV = 0 : For K = 1 To N
      YV = YV + V(K) * XV ^ (K - 1) : Next

    lblXYResult.Visible = True
    lblXYResult.Text = lblXYResult.Text & "x = " & XV.ToString & " y = " & YV.ToString & "<BR />"

    'Clear the x value so it can be used again. BT-01Oct2012
    txtXValue.Text = ""

  End Sub

  Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    If Not Page.IsPostBack Then
     
    Else
      V = ViewState("V")
      N = ViewState("N")
    End If
  End Sub

  Protected Sub Page_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.PreRender
    ViewState("V") = V
    ViewState("N") = N
  End Sub
End Class

Below is the aspx code, make changes in the opening lines.

HTML Code:

<%@ Page Title="" Language="VB" MasterPageFile="~/interpower/MasterPages/CoilCalcsMaster.master" AutoEventWireup="false" CodeFile="c-fit.aspx.vb" Inherits="c_fit" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
  <style type="text/css">
    .style5
    {
      width: 80%;
    }
    .style6
    {
      height: 21px;
    }
    .style7
    {
      width: 105px;
    }
    .style8
    {
      height: 21px;
      width: 105px;
    }
    </style>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

<p style="text-align: center">
      <span class="style2">Least Squares Curve Fitting</span>
      <br class="style2" />
       Company Name</p>
      <br />



  <table class="style5">
    <tr>
      <td colspan="2">
        <asp:Label ID="lblTitle" runat="server" 
          Text="Enter the x, y, coordinates of up to 30 data pairs."></asp:Label>
      </td>
      <td>
        &nbsp;</td>
      <td class="style7">
        &nbsp;</td>
    </tr>
    <tr>
      <td class="style6">
        </td>
      <td class="style6">
        </td>
      <td class="style6">
        &nbsp;</td>
      <td class="style8">
        &nbsp;</td>
    </tr>
    <tr>
      <td>
     <asp:Label ID="lblNoDataPrs" runat="server" Text="How many data pairs?" 
        ViewStateMode="Enabled"></asp:Label></td>
  <td> 
  <asp:TextBox ID="txtNoDataPrs"
    runat="server" CssClass="LeftValueColumn"></asp:TextBox>
    &nbsp;&nbsp;&nbsp;&nbsp;<asp:Button ID="btnSubmitNoDatPoints" runat="server" 
      Text="Submit" />
        &nbsp;</td>
  <td> 
  <asp:Label ID="lbl_message" runat="server"></asp:Label>
      </td>
  <td class="style7"> 
    &nbsp;</td>
    </tr>
    <tr>
      <td class="style6">
  <asp:Label ID="lblDegPoly" runat="server" Text="Label" Visible="False"></asp:Label>
        </td>
      <td class="style6">
  <asp:TextBox ID="txtDegPoly" runat="server" CssClass="LeftValueColumn" 
          style="margin-left: 0px" Visible="False"></asp:TextBox>
      </td>
      <td class="style6">
        <asp:Button ID="btnCalc" runat="server" Text="Least Squares Curve Fitting " 
          Enabled="False" Width="221px" /></td>
      <td class="style8">
        &nbsp;</td>
    </tr>
    <tr>
      <td class="style6">
        &nbsp;</td>
      <td class="style6">
        <asp:Label ID="lblXPower" runat="server"></asp:Label>
      </td>
      <td class="style6">
        <asp:Label ID="lblCoefficient" runat="server"></asp:Label>
      </td>
      <td class="style8">
        &nbsp;</td>
    </tr>
    <tr>
      <td class="style6">
        &nbsp;</td>
      <td class="style6">
        <asp:Label ID="lblXPowerRslt" runat="server"></asp:Label>
      </td>
      <td class="style6">
        <asp:Label ID="lblCoefficientRslt" runat="server"></asp:Label>
      </td>
      <td class="style8">
        &nbsp;</td>
    </tr>
    <tr>
      <td class="style6">
        &nbsp;</td>
      <td class="style6" colspan="2">
        <asp:Label ID="lblPercentGoodness" runat="server" Visible="False"></asp:Label>
      </td>
      <td class="style8">
        &nbsp;</td>
    </tr>
    <tr>
      <td class="style6">
        &nbsp;</td>
      <td class="style6">
        <asp:Label ID="lblMorePoints" runat="server" 
          Text="Would you like to enter more points?" Visible="False"></asp:Label>
      </td>
      <td class="style6">
        &nbsp;</td>
      <td class="style8">
        &nbsp;</td>
    </tr>
    <tr>
      <td class="style6">
        &nbsp;</td>
      <td class="style6">
        <asp:RadioButtonList ID="MorePoints" runat="server" Visible="False" 
          AutoPostBack="True">
          <asp:ListItem>Yes</asp:ListItem>
          <asp:ListItem>No</asp:ListItem>
        </asp:RadioButtonList>
      </td>
      <td class="style6">
        <asp:TextBox ID="txtXValue" runat="server" Visible="False" 
          CssClass="LeftValueColumn" Width="50px"></asp:TextBox>
      &nbsp;<asp:Button ID="btnCalculateY" runat="server" Text="Calculate Y value" 
          Visible="False" />
      </td>
      <td class="style8">
        <asp:Label ID="lblXYResult" runat="server" Visible="False"></asp:Label>
      </td>
    </tr>
    <tr>
      <td class="style6">
        &nbsp;</td>
      <td class="style6">
        &nbsp;</td>
      <td class="style6">
        &nbsp;</td>
      <td class="style8">
        &nbsp;</td>
    </tr>
    </table>
  
  
  <br />
  <br />                      
  <asp:Panel ID="Pnl_TextBoxes" runat="server">
  </asp:Panel>
  <br />  
  &nbsp;
  <br />  

&nbsp;
  &nbsp;<br /> 

</asp:Content>