ASP.NET 2.0 编程珠玑之五--调试已创建好的代码
5.2 调整对象以便于调试
有时,并不需要可视化器的强大功能,但仍希望快速、方便地在调试窗口中查看和解释业务对象。System.Diagnostics命名空间有几个不同的特性,使用它们可以修饰类及其它成员并调整对象,以便于调试。实际上,可以降低调试窗口的混乱程度,控制定制业务对象的显示内容。
下面我们来调试一个Person类,我给出了Person类的完整代码,其中内部类PersonProxy就是为方便调试建立的类:
有时,并不需要可视化器的强大功能,但仍希望快速、方便地在调试窗口中查看和解释业务对象。System.Diagnostics命名空间有几个不同的特性,使用它们可以修饰类及其它成员并调整对象,以便于调试。实际上,可以降低调试窗口的混乱程度,控制定制业务对象的显示内容。
下面我们来调试一个Person类,我给出了Person类的完整代码,其中内部类PersonProxy就是为方便调试建立的类:
1
using System;
2
using System.Collections.Generic;
3
using System.Text;
4
using System.Diagnostics;
5![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
6
namespace MVPHacks.TestDebuggerAttributes
7
{
8
[DebuggerTypeProxy(typeof(PersonProxy))]
9
class Person
10
{
11
private string _lastName = string.Empty;
12
private string _firstName = string.Empty;
13
private int _age = 0;
14
private List<Person> _children = new List<Person>();
15
private List<string> _pets = new List<string>();
16
private List<string> _cars = new List<string>();
17![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
18
public string LastName
19
{
20
get { return _lastName; }
21
set { _lastName = value; }
22
}
23![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
24
public string FirstName
25
{
26
get { return _firstName; }
27
set { _firstName = value; }
28
}
29![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
30
public int Age
31
{
32
get { return _age; }
33
set { _age = value; }
34
}
35![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
36
[DebuggerBrowsable(DebuggerBrowsableState.Collapsed)]
37
public List<Person> Children
38
{
39
get { return _children; }
40
}
41![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
42
[DebuggerBrowsable(DebuggerBrowsableState.Never)]
43
public List<string> Pets
44
{
45
get { return _pets; }
46
}
47![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
48
[DebuggerBrowsable(DebuggerBrowsableState.RootHidden)]
49
public List<string> Cars
50
{
51
get { return _cars; }
52
}
53![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
54
public Person()
55
{
56
}
57![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
58
public Person(string lastName, string firstName, int age)
59
{
60
_lastName = lastName;
61
_firstName = firstName;
62
_age = age;
63
}
64
}
65
}
66![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
2
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
3
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
4
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
5
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
6
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
7
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
8
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
9
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
10
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
11
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
12
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
13
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
14
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
15
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
16
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
17
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
18
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
19
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
20
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
21
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
22
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
23
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
24
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
25
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
26
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
27
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
28
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
29
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
30
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
31
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
32
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
33
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
34
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
35
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
36
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
37
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
38
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
39
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
40
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
41
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
42
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
43
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
44
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
45
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
46
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
47
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
48
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
49
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
50
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
51
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
52
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
53
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
54
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
55
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
56
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
57
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
58
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
59
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
60
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
61
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
62
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
63
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
64
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
65
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
66
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
1
using System;
2
using System.Collections.Generic;
3
using System.Text;
4
using System.Diagnostics;
5
using MVPHacks.TestDebuggerAttributes;
6![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
7
namespace MVPHacks.TestDebuggerAttributes
8
{
9
class PersonProxy
10
{
11
private Person _person;
12![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
13
public PersonProxy(Person person)
14
{
15
_person = person;
16
}
17![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
18
public string Children
19
{
20
get
21
{
22
string[] children = new string[_person.Children.Count];
23
for (int i = 0; i < _person.Children.Count; i++)
24
{
25
children[i] = _person.Children[i].FirstName;
26
}
27
return string.Join(", ", children);
28
}
29
}
30![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
31
public string Pets
32
{
33
get
34
{
35
return string.Join(", ", _person.Pets.ToArray());
36
}
37
}
38![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
39
public string Cars
40
{
41
get
42
{
43
return string.Join(", ", _person.Cars.ToArray());
44
}
45
}
46![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
47
[DebuggerDisplay("{_person.Age >= 21 ? \"Old Enough\"" + " : \" Too Young\"}", Type = "Alcohol Age Check")]
48
public string AlcoholAgeCheck
49
{
50
get
51
{
52
return string.Empty;
53
}
54
}
55![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
56
private string ValidateObject()
57
{
58
List<string> violations = new List<string>();
59![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
60
// make sure that a first name has been specified
61
if (0 == _person.FirstName.Length)
62
{
63
violations.Add("FirstName is empty");
64
}
65![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
66
// make sure that a last name has been specified
67
if (0 == _person.LastName.Length)
68
{
69
violations.Add("LastName is empty");
70
}
71![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
72
// make sure that age is greater than 0
73
if (0 > _person.Age)
74
{
75
violations.Add("Age is less than 0");
76
}
77![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
78
// put additional validations here
79
// return results to DebuggerDisplay attribute
80
return string.Join(", ", violations.ToArray());
81
}
82![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
83
[DebuggerDisplay("{ValidateObject()}")]
84
public string BusinessRulesViolations
85
{
86
get
87
{
88
return string.Empty;
89
}
90
}
91![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
92
public string Person
93
{
94
get
95
{
96
return "Name = " + _person.FirstName + " " + _person.LastName + ", Age = " + _person.Age;
97
}
98
}
99
}
100
}
101![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
2
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
3
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
4
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
5
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
6
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
7
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
8
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
9
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
10
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
11
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
12
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
13
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
14
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
15
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
16
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
17
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
18
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
19
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
20
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
21
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
22
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
23
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
24
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
25
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
26
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
27
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
28
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
29
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
30
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
31
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
32
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
33
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
34
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
35
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
36
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
37
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
38
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
39
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
40
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
41
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
42
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
43
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
44
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
45
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
46
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
47
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
48
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
49
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
50
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
51
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
52
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
53
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
54
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
55
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
56
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
57
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
58
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
59
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
60
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
61
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
62
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
63
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
64
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
65
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
66
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
67
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
68
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
69
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
70
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
71
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
72
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
73
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
74
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
75
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
76
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
77
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
78
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
79
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
80
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
81
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
82
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
83
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
84
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
85
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
86
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
87
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
88
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
89
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
90
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
91
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
92
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
93
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
94
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
95
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
96
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
97
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
98
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
99
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
100
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
101
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)