C# String操作

 1 string s = "AbcdefG";
 2 //length:7
 3 Label1.Text += "length：" + s.Length + "|";
 4 //count:7
 5 Label1.Text += "count：" + s.Count() + "|";
 6 //ElementAt1:b
 7 Label1.Text += "elementat1：" + s.ElementAt(1) + "|";
 8 //ElementAtOrDefault:default(string),null
 9 Label1.Text += "elementat7：" + s.ElementAtOrDefault(7) + "|";
10 //IndexOf("c"):2
11 Label1.Text += "indexof-c：" + s.IndexOf("c") + "|";
12 //Insert(3,"w"):AbcwdefG
13 Label1.Text += "insert(3,‘w‘)：" + s.Insert(3,"w") + "|";
14 //PadLeft(10,‘/‘):///AbcdefG
15 Label1.Text += "padleft：" + s.PadLeft(10,‘/‘) + "|";
16 //PadRight(10,‘/‘):AbcdefG///
17 Label1.Text += "padright：" + s.PadRight(10,‘/‘) + "|";
18 //Remove(0,1):bcdefG
19 Label1.Text += "remove(0,1)：" + s.Remove(0,1) + "|";
20 //Replace("d","w"):AbcwefG
21 Label1.Text += "replace(‘d‘,‘w‘)：" + s.Replace("d","w") + "|";
22 //Reverse:GfedcbA
23 var reverse = s.Reverse();
24 Label1.Text += "reverse：" + s.Reverse() + "|";
25 //Split(‘d‘):{string[2]};
26 Label1.Text += "split(‘d‘)：" + s.Split(‘d‘) + "|";
27 //Substring(2,5):cdefG
28 Label1.Text += "sunstring(2,5)：" + s.Substring(2,5) + "|";
29 //ToArray:{char[7]}
30 var array = s.ToArray();
31 Label1.Text += "toarray：" + s.ToArray() + "|";
32 //ToCharArray:{char[7]}
33 var chararray = s.ToCharArray();
34 Label1.Text += "tochararray：" + s.ToCharArray() + "|";
35 //ToLower:abcdefg
36 Label1.Text += "tolower：" + s.ToLower() + "|";