在工作过程中学到的几个小知识点总结:
根据条件判断是是否要加入集合:
可以通过linq去判断条件是否成立
List<HRWorkOverTimeDto> rest = new List<HRWorkOverTimeDto>();
   for (int i = 0; i < gps.Count; i++)
   {
       if (rest.Find(x => x.overTimePeople_hrBaseName == gps[i].overTimePeople_hrBaseName && x.overTimeStartDate == gps[i].overTimeStartDate && x.overTimeEndDate == gps[i].overTimeEndDate) == null)
       {
                    rest.Add(gps[i]);
       }
   }
string[] arr = Regex.Split(dto.overTimePeople_hrBaseName, dto.udf1, RegexOptions.IgnoreCase);
由于有用到Regex.Split()这个方法,所以从网上搜到一下资料已做参考:
Regex.Split的用法:
1、用字符串分隔:
using System.Text.RegularExpressions;
string str="aaajsbbbjsccc";
string[] sArray=Regex.Split(str,"js",RegexOptions.IgnoreCase);
foreach (string i in sArray) Response.Write(i.ToString() + "<br>");
输出结果:
aaa
bbb
ccc
2、用多个字符来分隔:
string str="aaajbbbscccjdddseee";
string[] sArray=str.Split(new char[2] {'j','s'});
foreach(string i in sArray) Response.Write(i.ToString() + "<br>");
输出结果:
aaa
bbb
ccc
ddd
eee
3、用单个字符来分隔:
string str="aaajbbbjccc";
string[] sArray=str.Split('j');
foreach(string i in sArray) Response.Write(i.ToString() + "<br>");
输出结果:
aaa
bbb
ccc
48.String.Split 方法有6个重载函数: 
49.  
50. 
51.程序代码  
52. 
53.1) public string[] Split(params char[] separator) 
54.  
55.2) public string[] Split(char[] separator, int count) 
56.3) public string[] Split(char[] separator, StringSplitOptions options) 
57.4) public string[] Split(string[] separator, StringSplitOptions options) 
58.5) public string[] Split(char[] separator, int count, StringSplitOptions options) 
59.6) public string[] Split(string[] separator, int count, StringSplitOptions options)  
60. 
61. 
62.下边我们通过一些实例来说明下怎么使用(以下string words = "1,2.3,,4";): 
63.1. public string[] Split(params char[] separator) 
64.  
65. 
66.程序代码  
67. 
68.string[] split = words.Split(new Char[] { ',' });//返回:{"1","2.3","","4"}  
69.string[] split = words.Split(new Char[] { ',', '.' });//返回:{"1","2","3","","4"}   
70.2. public string[] Split(char[] separator, int count) 
71.  
72. 
73.程序代码  
74. 
75.string[] split = words.Split(new Char[] { ',', '.' }, 2);//返回:{"1","2.3,,4"}  
76.string[] split = words.Split(new Char[] { ',', '.' }, 6);//返回:{"1","2","3","","4"}   
77.3. public string[] Split(char[] separator, StringSplitOptions options) 
78.  
79. 
80.程序代码  
81. 
82.string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素  
83.string[] split = words.Split(new Char[] { ',', '.' }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素   
84.4. public string[] Split(string[] separator, StringSplitOptions options) 
85.  
86. 
87.程序代码  
88. 
89.string[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2","3","4"} 不保留空元素  
90.string[] split = words.Split(new string[] { ",", "." }, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素   
91.5. public string[] Split(char[] separator, int count, StringSplitOptions options) 
92.  
93. 
94.程序代码  
95. 
96.string[] split = words.Split(new Char[] { ',', '.' }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素  
97.string[] split = words.Split(new Char[] { ',', '.' }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素   
98.6. public string[] Split(string[] separator, int count, StringSplitOptions options) 
99.  
100. 
101.程序代码  
102. 
103.string[] split = words.Split(new string[] { ",", "." }, 2, StringSplitOptions.RemoveEmptyEntries);//返回:{"1","2.3,,4"} 不保留空元素  
104.string[] split = words.Split(new string[] { ",", "." }, 6, StringSplitOptions.None);//返回:{"1","2","3","","4"} 保留空元素   
105. 
106.需要注意的是没有重载函数public string[] Split(string[] separator),所以我们不能像VB.NET那样使用words.Split(","),而只能使用words.Split(',')