Vdzhambazova

Author Validation

Jul 4th, 2016
356
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  1. public class Book
  2. {
  3. private string author;
  4. private string title;
  5. private double price;
  6.  
  7. public Book(string author, string title, double price)
  8. {
  9. this.Author = author;
  10. this.Title = title;
  11. this.Price = price;
  12. }
  13.  
  14. public string Author
  15. {
  16. get { return this.author; }
  17. set
  18. {
  19. int num = 0;
  20. if (CheckIfAuthorHasSurname(value))
  21. {
  22. if (int.TryParse(GetAuthorSurname(value).Substring(0, 1), out num) || string.IsNullOrWhiteSpace(value))
  23. {
  24. throw new ArgumentException("Author not valid!");
  25. }
  26.  
  27. this.author = value;
  28. }
  29. }
  30. }
  31.  
  32. private bool CheckIfAuthorHasSurname(string value)
  33. {
  34. string[] name = value.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
  35. return name.Length == 2;
  36. }
  37.  
  38. private string GetAuthorSurname(string value)
  39. {
  40.  
  41. string[] nameArgs = value.Split();
  42. return nameArgs[1];
  43. }
  44.  
  45. public string Title
  46. {
  47. get { return this.title; }
  48. set
  49. {
  50. if (value.Length < 3)
  51. {
  52. throw new ArgumentException("Title not valid!");
  53. }
  54. this.title = value;
  55. }
  56. }
  57.  
  58. public virtual double Price
  59. {
  60. get { return this.price; }
  61. set
  62. {
  63. if (value <= 0)
  64. {
  65. throw new ArgumentException("Price not valid!");
  66. }
  67.  
  68. this.price = value;
  69. }
  70. }
  71.  
  72. public override string ToString()
  73. {
  74. StringBuilder sb = new StringBuilder();
  75. sb.Append("Type: ").Append(this.GetType().Name)
  76. .Append(Environment.NewLine)
  77. .Append("Title: ").Append(this.Title)
  78. .Append(Environment.NewLine)
  79. .Append("Author: ").Append(this.Author)
  80. .Append(Environment.NewLine)
  81. .Append("Price: ").Append($"{this.Price:F1}")
  82. .Append(Environment.NewLine);
  83.  
  84. return sb.ToString();
  85. }
  86.  
  87. }
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