Need help on VB 2003.Net

Question 1

Create an application that displays a letter grade based on the average of three test scores entered by Professor John. Each test is worth 100 points. Verify that the test scores entered by the professor are numeric. Use the following information to complete the application:

Test Average










Below 60




I'm lost anyone can help please? Crying 


9/4/2007 3:08:14 PM 3502 articles. 0 followers. Follow

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 The required aspx is

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Sum.aspx.cs" Inherits="Sum" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
<html xmlns="" >
<head runat="server">
    <title>Score Grader</title>
    <form id="form1" runat="server">
          <td>Score 1</td>
          <td><asp:TextBox ID="TextBox1" runat="server"></asp:TextBox></td>
          <td>Score 2</td>
          <td><asp:TextBox ID="TextBox2" runat="server"></asp:TextBox></td>
          <td>Score 3</td>
          <td><asp:TextBox ID="TextBox3" runat="server"></asp:TextBox></td>
          <td><asp:Button ID="cmdCalculate" runat="server" Text="Calculate" OnClick="cmdCalculate_Click" /></td>
          <td runat="server" id="tddResult"></td>

The code behind is:

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class Sum : System.Web.UI.Page
  private const string FILTER_INTEGER = "0123456789-";
  protected void Page_Load(object sender, EventArgs e)
  protected void cmdCalculate_Click(object sender, EventArgs e)
    int iSum = System.Convert.ToInt32("0" + FilterInteger(TextBox1.Text))
      + System.Convert.ToInt32("0" + FilterInteger(TextBox2.Text))
      + System.Convert.ToInt32("0" + FilterInteger(TextBox3.Text));
    tddResult.InnerText = "F";
    if (iSum >= 180) tddResult.InnerText = "D";
    if (iSum >= 210) tddResult.InnerText = "C";
    if (iSum >= 240) tddResult.InnerText = "B";
    if (iSum >= 270) tddResult.InnerText = "A";
  public string FilterInteger(string sIn)
    bool bDataDropped = false;
    return FilterWorker(sIn, FILTER_INTEGER, ref bDataDropped);
  private string FilterWorker(string sIn, string sValid, ref bool bDataDropped)
      bDataDropped = false;
      if (sIn.Length == 0) return sIn;
      string sOutput = "";
      for (int iLoop = 0; iLoop < sIn.Length; iLoop++)
        string sValue = sIn.Substring(iLoop, 1);
        if (sValid.IndexOf(sValue) >= 0) // sValue is valid!
          sOutput += sValue;
          bDataDropped = true;
      return sOutput;
    catch (Exception ex)
      return sIn;

Don't forget to click "Mark as Answer" on the post that helped you.
This credits that member, earns you a point and marks your thread as Resolved so we will all know you have been helped.
9/4/2007 8:42:05 PM
Thanks mate! Cheers
9/5/2007 12:28:45 AM

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