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1 public class TestObject : INotifyPropertyChanged
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2 {
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3 // The FirstName editable property.
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4 //
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5 private string _originalFirstName;
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6 private string _currentFirstName;
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7
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8 public override string FirstName
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9 {
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10 get { return _currentFirstName; }
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11 set
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12 {
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13 _currentFirstName = value;
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14 OnPropertyChanged("FirstName");
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15 }
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16 }
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17
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18 bool IsFirstNameDirty
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19 {
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20 get { return _currentFirstName != _originalFirstName; }
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21 }
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22
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23 void AcceptFirstNameChange()
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24 {
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25 if (IsFirstNameDirty)
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26 {
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27 _originalFirstName = _currentFirstName;
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28 OnPropertyChanged("FirstName");
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29 }
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30 }
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31
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32 void RejectFirstNameChange()
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33 {
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34 if (IsFirstNameDirty)
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35 {
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36 _currentFirstName = _originalFirstName;
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37 OnPropertyChanged("FirstName");
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38 }
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39 }
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40
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41 // The LastName editable property.
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42 //
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43 private string _originalLastName;
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44 private string _currentLastName;
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45
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46 public override string LastName
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47 {
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48 get { return _currentLastName; }
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49 set
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50 {
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51 _currentLastName = value;
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52 OnPropertyChanged("LastName");
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53 }
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54 }
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55
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56 bool IsLastNameDirty
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57 {
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58 get { return _currentLastName != _originalLastName; }
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59 }
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60
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61 void AcceptLastNameChange()
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62 {
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63 if (IsLastNameDirty)
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64 {
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65 _originalLastName = _currentLastName;
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66 OnPropertyChanged("LastName");
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67 }
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68 }
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69
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70 void RejectLastNameChange()
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71 {
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72 if (IsLastNameDirty)
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73 {
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74 _currentLastName = _originalLastName;
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75 OnPropertyChanged("LastName");
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76 }
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77 }
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78
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79 // Common members.
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80 //
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81 public bool IsDirty
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82 {
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83 get
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84 {
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85 return IsFirstNameChange || IsLastNameChange;
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86 }
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87 }
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88
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89 public void AcceptChanges()
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90 {
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91 AcceptFirstNameChange();
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92 AcceptLastNameChange();
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93 }
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94
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95 public void RejectChanges()
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96 {
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97 RejectFirstNameChange();
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98 RejectLastNameChange();
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99 }
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100
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101 public virtual event PropertyChangedEventHandler PropertyChanged;
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102
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103 protected virtual void OnPropertyChanged(string propertyName)
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104 {
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105 if (PropertyChanged != null)
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106 PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
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107 }
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108 }
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