List转字符串,用逗号隔开
List<string> list = new List<string>();
list.Add("a");
list.Add("b");
list.Add("c");
//MessageBox.Show(list.);
//LoadModel();
string s = string.Join(",", list.ToArray());
MessageBox.Show(s);
List<test> list = new List<test>();
list.Add(new test("1", "a"));
list.Add(new test("2", "b"));
list.Add(new test("", ""));
list.Add(new test("3", "c"));
var a = from o in list select o.test1;
var b = from o in list select o.test2;
string s1 = string.Join(",", a.ToArray());
string s2 = string.Join(",", b.ToArray());
MessageBox.Show(s1 + "
" + s2);
结果:1,2,,3
a,b,,c
字符串转List
这里s的分隔符不是“,”而是“, ”,后面有一个空格
string s = "1, 2, 3";
List<string> list = new List<string>(s.Split(new string[] { ", " }, StringSplitOptions.RemoveEmptyEntries));
foreach (string t in list)
{
MessageBox.Show("*" + t + "*");
}
这里s的分隔符是“,”
string s = "1,2,3";
List<string> list = new List<string>(s.Split(','));
foreach (string t in list)
{
MessageBox.Show("*" + t + "*");
}
来源:http://www.cnblogs.com/eric_ibm/p/list.html
List<int> 转 string :
list<int>: 1,2,3,4,5,6,7 转换成字符串:“1,2,3,4,5,6,7”
List<int> list= new List<int>() { 1, 2, 3, 4, 5, 6, 7 }; string depaid = string.Join(",", list);
string 转 List<int>:
string s = "1, 2, 3"; List<string> list = new List<string>(s.Split(new string[] { ", " }, StringSplitOptions.RemoveEmptyEntries));
List<string> list = new List<string>(s.Split(','));//或者
List<string> 转 List<int>
var listOfStrings =(new[]{"4","5","6"}).ToList();
var listOfInts = listOfStrings.Select<string,int>(q =>Convert.ToInt32(q));
List<int> 转List<string>
List<int> l1 = new List<int>(new int[] { 1,2,3 } ); List<string> l2 = l1.ConvertAll<string>(x => x.ToString());
C#中string[]数组和list<string>:
System.String[] str={"str","string","abc"}; List<System.String> listS=new List<System.String>(str);
从List<System.String>转到System.String[]
List<System.String> listS=new List<System.String>(); listS.Add("str"); listS.Add("hello"); System.String[] str=listS.ToArray();
来源: http://www.cnblogs.com/chear/archive/2012/12/22/2828956.html
System.String[] strArr={"str","string","abc"};
Func<string, string[]> func = (str) =>
{
if (str == null)
str = string.Empty;
return str.Split(',');
};
IList<System.int> ilistS = TypeParse.ToListInt(func(strArr));