C#中字符串String类及方法的使用（一）

 1 string string1 = "This is a string created by assignment.";
 2 Console.WriteLine(string1);
 3 string string2a = "The path is C:\\PublicDocuments\\Report1.doc";
 4 Console.WriteLine(string2a);
 5 string string2b = @"The path is C:\PublicDocuments\Report1.doc";
 6 Console.WriteLine(string2b);
 7 // 显示结果：
 8 //       This is a string created by assignment.
 9 //       The path is C:\PublicDocuments\Report1.doc
10 //       The path is C:\PublicDocuments\Report1.doc    

 1             char[] chars = { ‘w‘, ‘o‘, ‘r‘, ‘d‘ };
 2             sbyte[] bytes = { 0x41, 0x42, 0x43, 0x44, 0x45, 0x00 };
 3 
 4             // 通过字符数组实例化一个字符串.
 5             string string1 = new string(chars);
 6             Console.WriteLine(string1);
 7 
 8             string stringFromBytes = null;
 9             string stringFromChars = null;
10             unsafe
11             {
12                 fixed (sbyte* pbytes = bytes)
13                 {
14                     // 通过byte数组指针实例化一个字符串.
15                     stringFromBytes = new string(pbytes);
16                 }
17                 fixed (char* pchars = chars)
18                 {
19                     // 通过字符数组指针实例化一个字符串.
20                     stringFromChars = new string(pchars);
21                 }
22             }
23             Console.WriteLine(stringFromBytes);
24             Console.WriteLine(stringFromChars);
25 
26             // 实例化一个由20个c组成的字符串.
27             string string2 = new string(‘c‘, 20);
28             Console.WriteLine(string2);
29 
30             //将字符数组中第1个字母（从0开始）起长度为2的字符串实例化
31             string string3 = new string(chars, 1, 2);
32             Console.WriteLine(string3);
33             // 显示结果：
34             //       word
35             //       ABCDE
36             //       word
37             //       ccccccccccccccccccccc
38             //       or            

1 string str1 = "Test";
2 for (int ctr = 0; ctr <= str1.Length - 1; ctr++)
3     Console.Write("{0} ", str1[ctr]);
4 //显示结果：
5 //      T e s t