Csharp Blog: May 2014

Friday, May 30, 2014

Simple Bar Graph and Pie Chart

namespace SimpleBarGraph
{
public partial class Form1 : Form
{

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;

//create metrix class
using System.Drawing.Drawing2D;

//Car Class
namespace Zau_MidtermExam
{
//Question No. 1
public class Car
{

namespace Zau_CSI_154_QUIZ_1_1

{

public partial class Form1 : Form

{

Zau_Smiley Face Lab

namespace Zau_Smiley_Face
{
public partial class Form1 : Form
{

Intro to Graphics

namespace Intro_To_Graphic
{

namespace StructureExercise
{

Struct_Notes

Struct
=======
A struct is a lightweight class.
Use the keyword 'struct' to define a structure.
Struct is value type, (class is reference type).

4. List of Relational Database Objects in MS Access

Objects are the types of items you can place in a database. They include:

Tables
Queries
Forms
Reports
Pages
Macros
Modules

CSI 156 (Database) Mid-Term Review Q.1,2,3

(1) Three main types of data

Numbers (Numeric)

Use for data to be included in mathematical calculations, except calculations involving money (use Currency type).

Stores 1, 2, 4, or 8 bytes; stores 16 bytes for Replication ID (GUID). The FieldSize property defines the specific Number type.

namespace More_On_DateTime
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void btnCompareDateTime_Click(object sender, EventArgs e)
{
//use the > operator to compare two date
//get user input
DateTime dt1 = dateTimePicker1.Value;
DateTime dt2 = dateTimePicker2.Value;

//compare >, <, ==,
if (dt1 > dt2)
{
richTextBox1.Text = String.Format("{0} is most recent", dt1);
}
else if (dt1 < dt2)
{
richTextBox1.Text = String.Format("{0} is most recent", dt2);
}
else //must be equal
{
richTextBox1.Text = "Both times are equal";
}
}

private void btnTimeDiff_Click(object sender, EventArgs e)
{
TimeSpan ts;
//get user input
DateTime dt1 = dateTimePicker1.Value;
DateTime dt2 = dateTimePicker2.Value;

if (dt1 > dt2)
ts = dt1 - dt2;
else
ts = dt2 - dt1;

//Display timespan properties

richTextBox1.Text = "Days: " + ts.Days + "\n" +
"Hours: " + ts.Hours + "\n" +
"Minutes: " + ts.Minutes + "\n" +
"Seconds: " + ts.Seconds + "\n\n" +
"TotalDays: " + ts.TotalDays + "\n" +
"TotalHours: " + ts.TotalHours;
}

private void Form1_Load(object sender, EventArgs e)
{
//in order to work the application update
//set maximum date inside the form load

dateTimePicker3.MaxDate = DateTime.Now;

//Set the min to 150 yr back from current date
dateTimePicker3.MinDate = DateTime.Now.AddYears(-150);

}

private void btnGetAge_Click(object sender, EventArgs e)
{
TimeSpan dt = DateTime.Now - dateTimePicker3.Value;
int years = dt.Days / 365;
if (years > 2)
MessageBox.Show(String.Format(
"you are {0} years old", years));
else
{
int months = (dt.Days % 365) / 30;
months += 12 * years;
MessageBox.Show(String.Format(
"you are {0} months old", months));
}
}
}
}
//To read: click here

///Lab Assignment: Add to the Person class
///Add method GetAge() to the Person class
///this method returns the numbers of years old
///
///Add method GetDaysTillBirthDay()
///this method should return the number of days
///left until the person's birthday
///
///in form1: re-adjust the listview by adding 2 more colums: "Age", and "Days" left to brithdate
///
///Display the List<Person> with the additional information.
///
///In form1 add a method GetYoungest() that returns
///a person (the youngest person)
///add method GetOldest() that returns the oldest person
///Add button to call these methods and display.