Problem with TestOut's C# For Programmers

**Lebesgue** · Jan 14 '06, 06:25 PM

Re: Problem with TestOut's C# For Programmers

What internet browser are you using? What spyware protection / firewall
software are you using (these can block popup windows)?
And finally, since this is a C# group, what was the question you got stuck
on? Maybe people here could tell you what the correct answer is and why-

"PSL" <psl66_uk@(at )@-NOSPAM-hotmail.(dot).c om> wrote in message
news:551bff44-b75e-4843-96fc-5654a2a76f9a@ca rnage.santry.co m...[color=blue]
> Hi,
>
> I am going through the training C# For Programmers made by TestOut and
> like the presentation. The only problem is that this tutorial has a nastie
> bug
> that renders this software practically useless. I've tried using TestOut's
> support form to submit the problem but each time I submit I get a "ERROR
> MESSAGE: Could not modify CSV file.".
>
> My problem is that after I run a simulation, the simualtion report comes
> up.
> One section of this is called "Correct Answer". This section contains the
> text "To view the correct answer, click here." (click here is
> hyperlinked).
> Clicking on this hyperlink never brings up the solution. This makes it
> impossible for me to check answers.
>
> I got stuck on a question regarding structures. Any help would be greatly
> appreciated.
>
> Regards,
> Paul
>
>
> ------------------------------------------------------------------------------------
> Posted from WWWCoder.com (http://www.wwwcoder.com - The Web Developer's
> Resource site.
> Get your free weblog, download free apps, read tutorials, and more.[/color]

**psl66_uk@hotmail.com** · Jan 15 '06, 05:26 PM

Re: Problem with TestOut's C# For Programmers

"Lebesgue" <nos...@spam.jp > wrote:
[color=blue]
>What internet browser are you using? What spyware protection / firewall
>software are you using (these can block popup windows)?
>And finally, since this is a C# group, what was the question you got stuck
>on? Maybe people here could tell you what the correct answer is and why-[/color]

The reason for asking here is that maybe someone has encountered this
problem and figured out a solution (it would avoid me asking :-).

This is the TestOut Question

Q:

You have been asked to create a data type that can easily store and
convert distances of various kinds. Because a distance only consists of
a length value and associated units, a struct type seems to be a good
fit.

Do the following to create the needed struct data type:

Create a new class file called Distance.
Define a public enum called DistanceUnits with Inches, Feet, and Meters
as named values.
Create a public struct called Distance.
Define a public field in the Distance struct called Value of type
double.
Define a public field in the Distance struct called Units of type
DistanceUnits.
Define a constructor in Distance that will set the Value and Units
fields (in that order).
Define a public method in Distance called Convert that takes a
parameter of type DistanceUnits that identifies a new unit of measure.
The Convert method should do the following:
Convert the Value field from the current instance to the new unit of
measure identified by the parameter.
Create a new instance of Distance setting the Value and Units in the
new instance based on the converted value and the new unit of measure.
Return the new Distance struct.
A simple way to convert from one unit of measure to another is to use a
switch statement to convert the current value to an intermediate value
in known units (such as inches). Then use a second switch statement to
convert the intermediate value to the requested new unit of measure.

Use the following conversion values: 12 inches = 1 foot; 39.37 inches =
1 meter.

Run the test program to verify your code. Enter a distance value in the
edit box and select an original and new unit of measure from the drop
down list boxes. The converted distance should appear.

The simulation has a form consisting of the following:

Type: Label, Name: Label1, Text: Distance:
Type: TextBox, Name: valueTextBox, Text: 0
Type: ComboBox, Name: fromComboBox
Type: Label, Name: valueLabel, Text: ?
Type: ComboBox, Name: toComboBox

The code behind the form is the one below:

using System;
using System.Drawing;
using System.Collecti ons;
using System.Componen tModel;
using System.Windows. Forms;
using System.Data;

namespace Structs
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows. Forms.Form
{
private System.Windows. Forms.Label Label1;
private System.Windows. Forms.TextBox valueTextBox;
private System.Windows. Forms.ComboBox fromComboBox;
private System.Windows. Forms.Label Label2;
private System.Windows. Forms.Label valueLabel;
private System.Windows. Forms.ComboBox toComboBox;
/// <summary>
/// Required designer variable.
/// </summary>
private System.Componen tModel.Containe r components = null;

public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeCompo nent();

//
// TODO: Add any constructor code after InitializeCompo nent call
//
}

/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Disp ose();
}
}
base.Dispose( disposing );
}

#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeCompo nent()
{
this.components = new System.Componen tModel.Containe r();
this.toComboBox = new System.Windows. Forms.ComboBox( );
this.valueLabel = new System.Windows. Forms.Label();
this.Label2 = new System.Windows. Forms.Label();
this.fromComboB ox = new System.Windows. Forms.ComboBox( );
this.valueTextB ox = new System.Windows. Forms.TextBox() ;
this.Label1 = new System.Windows. Forms.Label();
this.SuspendLay out();
//
// toComboBox
//
this.toComboBox .DropDownStyle =
System.Windows. Forms.ComboBoxS tyle.DropDownLi st;
this.toComboBox .Location = new System.Drawing. Point(328, 16);
this.toComboBox .Name = "toComboBox ";
this.toComboBox .Size = new System.Drawing. Size(80, 21);
this.toComboBox .TabIndex = 6;
this.toComboBox .SelectedIndexC hanged += new
System.EventHan dler(ComboBox_S electedIndexCha nged);
//
// valueLabel
//
this.valueLabel .TextAlign =
System.Drawing. ContentAlignmen t.TopCenter;
this.valueLabel .Location = new System.Drawing. Point(248, 16);
this.valueLabel .Name = "valueLabel ";
this.valueLabel .Size = new System.Drawing. Size(72, 23);
this.valueLabel .TabIndex = 5;
this.valueLabel .Text = "?";
//
// Label2
//
this.Label2.Tex tAlign = System.Drawing. ContentAlignmen t.TopCenter;
this.Label2.Loc ation = new System.Drawing. Point(232, 16);
this.Label2.Nam e = "Label2";
this.Label2.Siz e = new System.Drawing. Size(16, 24);
this.Label2.Tab Index = 4;
this.Label2.Tex t = "=";
//
// fromComboBox
//
this.fromComboB ox.DropDownStyl e =
System.Windows. Forms.ComboBoxS tyle.DropDownLi st;
this.fromComboB ox.Location = new System.Drawing. Point(152, 16);
this.fromComboB ox.Name = "fromComboB ox";
this.fromComboB ox.Size = new System.Drawing. Size(80, 21);
this.fromComboB ox.TabIndex = 3;
this.fromComboB ox.SelectedInde xChanged += new
System.EventHan dler(ComboBox_S electedIndexCha nged);
//
// valueTextBox
//
this.valueTextB ox.Text = "0";
this.valueTextB ox.TextAlign =
System.Windows. Forms.Horizonta lAlignment.Cent er;
this.valueTextB ox.Location = new System.Drawing. Point(72, 16);
this.valueTextB ox.Name = "valueTextB ox";
this.valueTextB ox.Size = new System.Drawing. Size(72, 20);
this.valueTextB ox.TabIndex = 2;
this.valueTextB ox.TextChanged += new
System.EventHan dler(ComboBox_S electedIndexCha nged);
//
// Label1
//
this.Label1.Loc ation = new System.Drawing. Point(16, 16);
this.Label1.Nam e = "Label1";
this.Label1.Siz e = new System.Drawing. Size(56, 23);
this.Label1.Tab Index = 1;
this.Label1.Tex t = "Distance:" ;
//
// Form1
//
this.ClientSize = new System.Drawing. Size(424, 54);
this.Controls.A dd(this.toCombo Box);
this.Controls.A dd(this.valueLa bel);
this.Controls.A dd(this.Label2) ;
this.Controls.A dd(this.fromCom boBox);
this.Controls.A dd(this.valueTe xtBox);
this.Controls.A dd(this.Label1) ;
this.Text = "Distance Convert";
this.Load += new System.EventHan dler(Form1_Load );
this.ResumeLayo ut();
}
#endregion

/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run (new Form1());
}

private void Form1_Load(obje ct sender, System.EventArg s e)
{
foreach ( string s in Enum.GetNames(t ypeof(DistanceU nits)) )
{
fromComboBox.It ems.Add(s);
toComboBox.Item s.Add(s);
}
fromComboBox.Se lectedIndex = 0;
toComboBox.Sele ctedIndex = 0;
}

private void ComboBox_Select edIndexChanged( object sender,
System.EventArg s e)
{
try
{
Distance inD = new Distance(Conver t.ToDouble(valu eTextBox.Text),
(DistanceUnits) fromComboBox.Se lectedIndex);
Distance outD =
inD.Convert((Di stanceUnits)toC omboBox.Selecte dIndex);
valueLabel.Text = String.Format(" {0:0.#####}", outD.Value);
}
catch
{
valueLabel.Text = "?";
}
}
}
}

Thank you in anticipation.

**Lebesgue** · Jan 16 '06, 08:45 PM

Re: Problem with TestOut's C# For Programmers

Thanks for posting the whole question. What's your specific problem? Since
this is a very basic task, I'm afraid you may have problems with language
basics, and in this case, just giving you just a plain answer would be of no
use to you

<psl66_uk@hotma il.com> wrote in message
news:1137345590 .697903.167640@ z14g2000cwz.goo glegroups.com.. .[color=blue]
> "Lebesgue" <nos...@spam.jp > wrote:
>[color=green]
>>What internet browser are you using? What spyware protection / firewall
>>software are you using (these can block popup windows)?
>>And finally, since this is a C# group, what was the question you got stuck
>>on? Maybe people here could tell you what the correct answer is and why-[/color]
>
> The reason for asking here is that maybe someone has encountered this
> problem and figured out a solution (it would avoid me asking :-).
>
> This is the TestOut Question
>
> Q:
>
> You have been asked to create a data type that can easily store and
> convert distances of various kinds. Because a distance only consists of
> a length value and associated units, a struct type seems to be a good
> fit.
>
> Do the following to create the needed struct data type:
>
> Create a new class file called Distance.
> Define a public enum called DistanceUnits with Inches, Feet, and Meters
> as named values.
> Create a public struct called Distance.
> Define a public field in the Distance struct called Value of type
> double.
> Define a public field in the Distance struct called Units of type
> DistanceUnits.
> Define a constructor in Distance that will set the Value and Units
> fields (in that order).
> Define a public method in Distance called Convert that takes a
> parameter of type DistanceUnits that identifies a new unit of measure.
> The Convert method should do the following:
> Convert the Value field from the current instance to the new unit of
> measure identified by the parameter.
> Create a new instance of Distance setting the Value and Units in the
> new instance based on the converted value and the new unit of measure.
> Return the new Distance struct.
> A simple way to convert from one unit of measure to another is to use a
> switch statement to convert the current value to an intermediate value
> in known units (such as inches). Then use a second switch statement to
> convert the intermediate value to the requested new unit of measure.
>
> Use the following conversion values: 12 inches = 1 foot; 39.37 inches =
> 1 meter.
>
> Run the test program to verify your code. Enter a distance value in the
> edit box and select an original and new unit of measure from the drop
> down list boxes. The converted distance should appear.
>
>
> The simulation has a form consisting of the following:
>
> Type: Label, Name: Label1, Text: Distance:
> Type: TextBox, Name: valueTextBox, Text: 0
> Type: ComboBox, Name: fromComboBox
> Type: Label, Name: valueLabel, Text: ?
> Type: ComboBox, Name: toComboBox
>
> The code behind the form is the one below:
>
> using System;
> using System.Drawing;
> using System.Collecti ons;
> using System.Componen tModel;
> using System.Windows. Forms;
> using System.Data;
>
> namespace Structs
> {
> /// <summary>
> /// Summary description for Form1.
> /// </summary>
> public class Form1 : System.Windows. Forms.Form
> {
> private System.Windows. Forms.Label Label1;
> private System.Windows. Forms.TextBox valueTextBox;
> private System.Windows. Forms.ComboBox fromComboBox;
> private System.Windows. Forms.Label Label2;
> private System.Windows. Forms.Label valueLabel;
> private System.Windows. Forms.ComboBox toComboBox;
> /// <summary>
> /// Required designer variable.
> /// </summary>
> private System.Componen tModel.Containe r components = null;
>
> public Form1()
> {
> //
> // Required for Windows Form Designer support
> //
> InitializeCompo nent();
>
> //
> // TODO: Add any constructor code after InitializeCompo nent call
> //
> }
>
> /// <summary>
> /// Clean up any resources being used.
> /// </summary>
> protected override void Dispose( bool disposing )
> {
> if( disposing )
> {
> if (components != null)
> {
> components.Disp ose();
> }
> }
> base.Dispose( disposing );
> }
>
> #region Windows Form Designer generated code
> /// <summary>
> /// Required method for Designer support - do not modify
> /// the contents of this method with the code editor.
> /// </summary>
> private void InitializeCompo nent()
> {
> this.components = new System.Componen tModel.Containe r();
> this.toComboBox = new System.Windows. Forms.ComboBox( );
> this.valueLabel = new System.Windows. Forms.Label();
> this.Label2 = new System.Windows. Forms.Label();
> this.fromComboB ox = new System.Windows. Forms.ComboBox( );
> this.valueTextB ox = new System.Windows. Forms.TextBox() ;
> this.Label1 = new System.Windows. Forms.Label();
> this.SuspendLay out();
> //
> // toComboBox
> //
> this.toComboBox .DropDownStyle =
> System.Windows. Forms.ComboBoxS tyle.DropDownLi st;
> this.toComboBox .Location = new System.Drawing. Point(328, 16);
> this.toComboBox .Name = "toComboBox ";
> this.toComboBox .Size = new System.Drawing. Size(80, 21);
> this.toComboBox .TabIndex = 6;
> this.toComboBox .SelectedIndexC hanged += new
> System.EventHan dler(ComboBox_S electedIndexCha nged);
> //
> // valueLabel
> //
> this.valueLabel .TextAlign =
> System.Drawing. ContentAlignmen t.TopCenter;
> this.valueLabel .Location = new System.Drawing. Point(248, 16);
> this.valueLabel .Name = "valueLabel ";
> this.valueLabel .Size = new System.Drawing. Size(72, 23);
> this.valueLabel .TabIndex = 5;
> this.valueLabel .Text = "?";
> //
> // Label2
> //
> this.Label2.Tex tAlign = System.Drawing. ContentAlignmen t.TopCenter;
> this.Label2.Loc ation = new System.Drawing. Point(232, 16);
> this.Label2.Nam e = "Label2";
> this.Label2.Siz e = new System.Drawing. Size(16, 24);
> this.Label2.Tab Index = 4;
> this.Label2.Tex t = "=";
> //
> // fromComboBox
> //
> this.fromComboB ox.DropDownStyl e =
> System.Windows. Forms.ComboBoxS tyle.DropDownLi st;
> this.fromComboB ox.Location = new System.Drawing. Point(152, 16);
> this.fromComboB ox.Name = "fromComboB ox";
> this.fromComboB ox.Size = new System.Drawing. Size(80, 21);
> this.fromComboB ox.TabIndex = 3;
> this.fromComboB ox.SelectedInde xChanged += new
> System.EventHan dler(ComboBox_S electedIndexCha nged);
> //
> // valueTextBox
> //
> this.valueTextB ox.Text = "0";
> this.valueTextB ox.TextAlign =
> System.Windows. Forms.Horizonta lAlignment.Cent er;
> this.valueTextB ox.Location = new System.Drawing. Point(72, 16);
> this.valueTextB ox.Name = "valueTextB ox";
> this.valueTextB ox.Size = new System.Drawing. Size(72, 20);
> this.valueTextB ox.TabIndex = 2;
> this.valueTextB ox.TextChanged += new
> System.EventHan dler(ComboBox_S electedIndexCha nged);
> //
> // Label1
> //
> this.Label1.Loc ation = new System.Drawing. Point(16, 16);
> this.Label1.Nam e = "Label1";
> this.Label1.Siz e = new System.Drawing. Size(56, 23);
> this.Label1.Tab Index = 1;
> this.Label1.Tex t = "Distance:" ;
> //
> // Form1
> //
> this.ClientSize = new System.Drawing. Size(424, 54);
> this.Controls.A dd(this.toCombo Box);
> this.Controls.A dd(this.valueLa bel);
> this.Controls.A dd(this.Label2) ;
> this.Controls.A dd(this.fromCom boBox);
> this.Controls.A dd(this.valueTe xtBox);
> this.Controls.A dd(this.Label1) ;
> this.Text = "Distance Convert";
> this.Load += new System.EventHan dler(Form1_Load );
> this.ResumeLayo ut();
> }
> #endregion
>
> /// <summary>
> /// The main entry point for the application.
> /// </summary>
> [STAThread]
> static void Main()
> {
> Application.Run (new Form1());
> }
>
> private void Form1_Load(obje ct sender, System.EventArg s e)
> {
> foreach ( string s in Enum.GetNames(t ypeof(DistanceU nits)) )
> {
> fromComboBox.It ems.Add(s);
> toComboBox.Item s.Add(s);
> }
> fromComboBox.Se lectedIndex = 0;
> toComboBox.Sele ctedIndex = 0;
> }
>
> private void ComboBox_Select edIndexChanged( object sender,
> System.EventArg s e)
> {
> try
> {
> Distance inD = new Distance(Conver t.ToDouble(valu eTextBox.Text),
> (DistanceUnits) fromComboBox.Se lectedIndex);
> Distance outD =
> inD.Convert((Di stanceUnits)toC omboBox.Selecte dIndex);
> valueLabel.Text = String.Format(" {0:0.#####}", outD.Value);
> }
> catch
> {
> valueLabel.Text = "?";
> }
> }
> }
> }
>
>
> Thank you in anticipation.
>[/color]

**psl66_uk@hotmail.com** · Jan 17 '06, 05:51 PM

Re: Problem with TestOut's C# For Programmers

I think that there is an error in the question. I only managed to get
the code to compile when the class name had a different name to the
struct.
Once I changed the name of one of the items it worked.

Thank you for the interest you have shown.
Regards,
PSL

Lebesgue" <nos...@spam. jp wrote:[color=blue]
>Thanks for posting the whole question. What's your specific problem? Since
>this is a very basic task, I'm afraid you may have problems with language
>basics, and in this case, just giving you just a plain answer would be of no
>use to you[/color]

Problem with TestOut's C# For Programmers

Problem with TestOut's C# For Programmers

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