字符串截取

Question

312718|,312720|47299,312719|,312721|47288 怎么把竖线包括竖线到逗号之间的删除。竖线后面有些有数字。有些没有。最终为312718,312720,312719,312721

Answer 1

string src = @"312718|,312720|47299,312719|,312721|47288";            string[] array = temp.Split(',');
            IList<string> list = new List<string>();
            foreach (string str in array)
            {
                list.Add(str.Split('|')[0]);
            }
            foreach (string str in list)
            {
                Console.WriteLine(str);  
            }

Answer 2

Split 和 正则 都可以 

Answer 3

            String abb = "312718|,312720|47299,312719|,312721|47288";
            for (int i = 0; i < abb.IndexOf("|"); i++)
            {
                if (abb.IndexOf(",", abb.IndexOf("|")) > 0)
                {
                    abb = abb.Substring(0, abb.IndexOf("|")) + abb.Substring(abb.IndexOf(",", abb.IndexOf("|")), abb.Length - abb.IndexOf(",", abb.IndexOf("|")));
                }
                else
                {
                    abb = abb.Substring(0, abb.IndexOf("|"));
                }
            }

Answer 4

using System.Text.RegularExpression;
            string str = "312718|,312720|47299,312719|,312721|47288 ";
            string result = Regex.Replace(str, @"\|\d+", "").Replace("|,", ",");

Answer 5

47288后面没有逗号 怎么去掉了？
string input = "312718|,312720|47299,312719|,312721|47288";
string output = Regex.Replace(input, @"\|[^,]*", "");
output = "312718,312720,312719,312721";

Answer 6

写个函数
protected void Button2_Click(object sender, EventArgs e)
        {
            string Temp = "312718|,312720|47299,312719|,312721|47288";
            char [] arr = Temp.ToCharArray();
            char[] arr_rst = new char[arr.Length];
            bool begin = false;
            int j = 0;
            for (int i = 0; i < arr.Length; i++)
            {
                if (arr[i] == '|')
                {
                    begin = true;
                    continue;
                }
                if (arr[i] == ',')
                {
                    begin = false;
                }
                if (!begin)
                {
                    arr_rst[j] = arr[i];
                    j++;
                }
            }
            this.Label1.Text = new string(arr_rst);
        }

Answer 7

string src = @"312718|,312720|47299,312719|,312721|47288";
src.Replace("1","");