Programming Techniques Practice - 1

INDEX

LIST OF DRAWINGS iii

LESSON 1. PROGRAMMING ON FORMS WORKING WITH SIMPLE DATA STRUCTURES 1

1.1. Working with simple data structures 1

Maybe you are interested!

• Programming Techniques Practice - 38
• Practice database programming with VB.net - 39
• Practice database programming with VB.net - 19
• Practice database programming with VB.net - 17
• Java programming Web design profession - Dalat College of Technology - 8

1.1.1 Summary of knowledge to remember 1

1.1.2. Sample exercise 7

1.1.3. Practice exercise 35

1.2.4. Homework 50

1.2. Working with 1-dimensional arrays 53

1.2.1. Summary of knowledge to remember 53

1.2.2. Sample exercise 53

1.2.3. Practice exercise 59

1.2.4. Homework 74

1.3. Working with two-dimensional arrays 77

1.3.1. Summary of knowledge to remember 77

1.3.2. Sample exercise 77

1.3.3 Practice Exercise 83

1.3.4. Homework 99

1.4. Working with character strings 101

1.4.1. Summary of knowledge to remember 101

1.4.2. Sample exercise 102

1.4.3. Practice Exercise 107

1.4.4. Homework 116

LESSON 2. PROGRAMMING ON FORMS TO PROCESS ADVANCED DATA STRUCTURES 118

2.1. Working with structure 118

2.1.1. Summary of knowledge to remember 118

2.1.2. Sample exercise 119

2.1.3. Practice exercises 128

2.1.4. Homework 156

2.2. Working with files 158

2.2.1. Summary of knowledge to remember 158

2.2.2. Sample exercises 160

2.2.3. Practice exercises 168

2.2.4. Homework 203

LESSON 3. PROGRAMMING ON FORMS - FIRST STEPS OF WORKING WITH DATABASE .206 3.1. Summary of related theory 206

3.2. Sample exercise 209

3.3. Practice exercises 284

3.4. Homework 287

LIST OF DRAWINGS

Figure 1. 1. Record form 1

Figure 1. 2. One-to-many-two form

Figure 1.3 Solotion Window 2

Figure 1.4 Toolbox 2 window

Figure 1.5. Sample interface 7

Figure 1. 6. New Project Creation Window 8

Figure 1. 7. Create a new Windows Forms 8 application

Figure 1. 8. Properties dialog box 9

Figure 1.9. Form 9 renaming result

Figure 1. 10 Drag and drop Label into Form 10

Figure 1. 11 Drag and drop Textbox into Form 10

Figure 1. 12 Changing Textbox Properties 11

Figure 1. 13. Changing Label Properties 11

Figure 1.14 Form 11 design results

Figure 1.15 Test run program 12

Figure 1. 16. Results of running program 13

Figure 1. 17. Program to find GCD and BCNN 13

Figure 1. 18. Design results of the Form to find GCD and BCNN 15

Figure 1. 19. Results of running the program to find GCD and BCNN 17

Figure 1.20. Program to calculate area and perimeter of triangle 18

Figure 1. 21. Design results of the form to calculate the area and perimeter of a triangle 20

Figure 1. 22. Results of running the program to calculate the area and perimeter of a triangle 23

Figure 1. 23. Program form to calculate sum 23

Figure 1. 24 - Design result of the form to calculate the sum of 25

Figure 1.25. Results of running the program to calculate the sum of 27

Figure 1. 26. Working with Listbox 27

Figure 1.27. Results of designing a working Form with Listbox 30

Figure 1.28. Results of running the program with Listbox 32

Figure 1. 29. Login form 32

Figure 1.30. Login Form Design Results 34

Figure 1. 31. Running the login program 35

Figure 1. 32. Form for performing basic operations with two operands 36

Figure 1.33. Design result of the form to perform calculation 37

Figure 1. 35. Form for solving first-degree equations 39

Figure 1.36. Results of running the program to solve the first-degree equation system 43

Figure 1.37. Solving inequality 43

Figure 1.38. Results of running the program to solve inequality 45

Figure 1.39. Program to solve inequality 45

Figure 1.40. Program to solve equation 46

Figure 1. 41. Program to solve quadratic equation 47

Figure 1. 42. Sample interface 47

Figure 1. 44. Sample interface 49

Figure 1. 45. Sample interface 50

Figure 1. 46. Sample interface 50

Figure 1.47. Sample interface 51

Figure 1.49 Sample interface 52

Figure 1. 50 One-dimensional array exercises 53

Figure 1.51. Designing Form for operations on one-dimensional arrays 55

Figure 1. 52. Results of running the program to perform operations on a one-dimensional array 59

Figure 1. 53. One-dimensional array exercises 59

Figure 1.54. Design results of one-dimensional array exercise form 63

Figure 1.55 Program execution result when clicking on the add button 68

Figure 1.56. Program execution result when clicking on the remove button 69

Figure 1.57. Program execution result when clicking on search button 69

Figure 1.58. Program to convert 69 number system

Figure 1.59. Design results of the program form to convert the 71 number system

Figure 1.60. Results of running the program to convert the 73 number system

Figure 1. 61. Contact import program 75

Figure 1. 62. Student list program 75

Figure 1.64. Results of selecting a student 76

Figure 1. 65. Exercises on two-dimensional arrays 77

Figure 1. 66. Design results of sample exercise form on two-dimensional array 79

Figure 1.67. Results of running the sample exercise program on two-dimensional arrays 83

Figure 1. 68. Operations on two-dimensional arrays 83

Figure 1. 69. Results of running program 89

Figure 1. 70. Sum of two matrices 89

Figure 1. 71. Results of running program 93

Figure 1.72. Square matrix input form 94

Figure 1. 73. Square Matrix Form 95

Figure 1.74. Results of running program 99

Figure 1.75. Symmetric string test form 103

Figure 1.76. Results of running the program to check for symmetric string 104

Figure 1.77. Normalize and count words in string 105

Figure 1.78. Results of running the program to normalize and count words in string 107

Figure 1.79. String processing program 107

Figure 1.80. Results of designing the Form of the program to process string 109

Figure 1.81. Results of running the string processing program 112

Figure 1.82. Program for evaluating suffix expression 112

Figure 1. 83. Design results of the form for evaluating the suffix expression 114

Figure 1.84. Results of running the program to evaluate the postfix expression 116

Figure 1.88. Form to convert full infix expression to suffix 116

Figure 2.1. Primary school teacher management form 119

Figure 2.2 - Design results of Primary school teacher management form 123

Figure 2. 3. Results of running the primary school teacher management program 128

Figure 2.4. Motorcycle sales management form 128

Figure 2.5. Results of running the motorcycle sales management program 135

Figure 2. 6. Student list form 135

Figure 2.7. Results of designing Student Management Form 139

Figure 2.8. Results of running the student management program 145

Figure 2.9. Employee salary management program 145

Figure 2.10. Design results of Employee salary management form 149

Figure 2. 11. Results of running the employee salary management program 155

Figure 2.12. Information technology student class form 156

Figure 2. 13. Item Information Form 160

Figure 2. 14. Item Information Form 168

Figure 2. 15. Teacher Management Form 168

Figure 2.16. Results of designing Teacher Management Form 172

Figure 2.19. Design results of Employee salary management form 182

Figure 2.20. Results of running the employee salary management program 190

Figure 2. 21. Employee salary management program 191

Figure 2.22. Design results of mechanical engineering student form 194

Figure 2.23. Results of running the program for mechanical engineering students 203

Figure 2. 24. Mining industry staff management 203

Figure 2. 25. Car rental management 205

Figure 3. 1. Customer information form 211

Figure 3. 2. Item information form 211

Figure 3. 3. Sales detail form 212

Figure 3. 4. Customer information search form 213

Figure 3.5. Item information search form 214

Figure 3.6. Sales information search form 215

Figure 3. 7. MDI Form 217

Figure 3.8. Customer information form design results 219

Figure 3.9. Results of running Customer Information Form 226

Figure 3. 10. Item Information Form 227

Figure 3. 11. Design results of Item Information Form 227

Figure 3. 12. Result of running Item Information Form 234

Figure 3.13. Sales Detail Form Design Results 235

Figure 3.14. Results of running Sales Details Form 242

Figure 3.15. Customer search form design results 243

Figure 3.16. Results of running Customer Search Form 244

Figure 3.17. Design results of Item Search Form 245

Figure 3.18. Result of running the Item Search Form 246

Figure 3. 19. Add New Item window 247

Figure 3. 20. Form frmMain 247

Figure 3. 21. Items Collection Editor window 248

Figure 3. 22. Main Menu Form Results 248

LESSON 1. PROGRAMMING ON FORMS WORKING WITH SIMPLE DATA STRUCTURES

Target

After the lesson, students will be able to:

- Knowledge: Know how to design Forms and use C# to program on forms to process simple data structures and manipulate arrays and character strings.

- Skills: Apply knowledge of design and programming on forms to solve problems in computer science.

- Attitude:

+ Serious, creative

+ Actively practice

Prepare tools, materials and equipment

Prepare a computer with Windows XP operating system or higher, Microsoft Office software, Vietnamese language editor, Visual Studio 2008 software or higher.

1.1. Working with simple data structures

1.1.1 Summary of knowledge to remember

1. Some basic controls on Form

a. Form

A form is an object used as an interface to perform interactions with a database, including data update operations.

There are many forms for updating data, some of which are common. For example:

- Record format

Figure 1. 1. Record form

- One-to-many form

Figure 1. 2. One-to-many form

Sometimes these forms are combined together to form a new form.

b. Solution Explorer window:

- Show Projects in Solution, bold Project is run first

- Show all files in Project

- Toolbar

+ Show All files: Show files

+ Refresh: Reread files

+ View Code: Show command code

+ View Design: Show design

+ Class Diagram: Display class diagram

Figure 1 Solution Explorer window

Figure 1.3 Solotion window

c. Toolbox window

- Contains intuitive Programming controls

- Group by function

Figure 1.4 Toolbox window

d. Some basic controls:

Lable : is a control that allows users to display a string of characters on a form but cannot change that string of characters directly.