第一章新增例题:访问修饰符
该例题对教材1.3.1提到的访问修饰符(public、protected、private)的可访问性进行演示
1
using System;
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
3
namespace private_prtected_public
4
{
5
/// <summary>
6
/// Class1 的摘要说明。
7
/// </summary>
8
class Class1
9
{
10
public string s1="公有修饰符 public";
11
private string s2="私有修饰符 private";
12
protected string s3="保护修饰符 protected";
13
/// <summary>
14
/// 应用程序的主入口点。
15
/// </summary>
16
[STAThread]
17
static void Main(string[] args)
18
{
19
Console.WriteLine("Class1内部访问");
20
Class1 c1=new Class1();
21
c1.vistedAll();
22![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
23
Console.WriteLine("Class1的派生类中访问");
24
Class2 c2=new Class2();
25
c2.vistedAll();
26![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
27
Console.WriteLine("Class1外部访问");
28
Class3 c3=new Class3();
29
c3.vistedAll();
30
}
31![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
32
//Class1内部访问
33
public void vistedAll()
34
{
35![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
36
Console.WriteLine(s1);
37
Console.WriteLine(s2);
38
Console.WriteLine(s3);
39
}
40
}
41![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
42
class Class2:Class1
43
{
44
//Class1的派生类中访问
45
new public void vistedAll()
46
{
47
Console.WriteLine(s1);
48
//不可访问Class1中的private修饰的成员
49
//Console.WriteLine(s2);
50
Console.WriteLine(s3);
51
}
52
}
53![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
54
class Class3
55
{
56
//Class1外部访问
57
public void vistedAll()
58
{
59![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
60
Class1 c1=new Class1();
61
Console.WriteLine(c1.s1);
62
//不可访问Class1中的private修饰的成员
63
//Console.WriteLine(c1.s2);
64
//不可访问Class1中的protected修饰的成员
65
//Console.WriteLine(c1.s3);
66
}
67
}
68
}
完整例题代码下载:private_prtected_public.rar
![](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/ExpandedBlockStart.gif)
5
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
6
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
7
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
8
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
9
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
10
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.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/ExpandedSubBlockStart.gif)
14
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
15
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.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/ExpandedSubBlockStart.gif)
19
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
20
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
21
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.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/InBlock.gif)
25
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
26
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
27
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
28
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
29
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
30
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
31
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
32
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.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/InBlock.gif)
37
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
38
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
39
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.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/ExpandedSubBlockStart.gif)
44
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
45
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
46
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.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/InBlock.gif)
51
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.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/InBlock.gif)
57
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
58
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.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/InBlock.gif)
63
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
64
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
65
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
66
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
67
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
68
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)