有一字符串,如1,2,3 现要怎样把逗号的个数取出来呀?(为2)

Question

一个小问题,现在想不出.

Answer 1

string s="1,2,3";
string[] s2= s.split(",");
int douhaogeshu = s2.Lenth -1;

Answer 2

string s="1,2,3";
int douhaogeshu = 0;
foreach(char c in s)
{
if(c==',')
 douhaogeshu++;
}

Answer 3

T_Str = "1,2,3 ";
string[] OID_Arr = T_Str.Split(',');
int num = OID_Arr.Length-1;      //就是逗号个数

Answer 4

string aa = "dd,3,3,44,,5";
string bb = "[,]";
MatchCollection aaa = Regex.Matches(aa,bb);
Response.Write(aaa.Count.ToString());

Answer 5

string str="1,2,3";
string[] arraystr= str.split(",");
int douhaogeshu = arraystr.Lenth;

Answer 6

if String="1,2,3,4,5.....,10"(",").Count=(String.Lenth-1)/2