Question

像：

"Name: Daniel --- Phone Number: 3128623432 --- Age: 12 --- Occupation: Student"

如何获得“年龄”后的内容？我只想要数字。（他的年龄）

Answer 1

使用RegEx：

^.+Age\: ([0-9]+).+$

首次分组会返回年龄，请参阅here或here。

Answer 2

您可以尝试使用以下概念的完整代码：

string strAge;
string myString = "Name: Daniel --- Phone Number: 3128623432 --- Age: 12 --- Occupation: Student";
int posString = myString.IndexOf("Age: ");

if (posString >0)
{
  strAge = myString.Substring(posString);
}

强有力的做法是获得一些正则表达式:)尽管......

Answer 3

假设您的年龄为Age: value

string st = "Name: Daniel --- Phone Number: 3128623432 --- Age: 12 --- Occupation: Student";
//Following Expression finds a match for a number value followed by `Age:`
System.Text.RegularExpressions.Match mt = System.Text.RegularExpressions.Regex.Match(st, @"Age\: \d+");
int age=0; string ans = "";
if(mt.ToString().Length>0)
{
     ans = mt.ToString().Split(' ')[1]);
     age = Convert.ToInt32(ans);
     MessageBox.Show("Age = " + age);
}
else
     MessageBox.Show("No Value found for age");

MessageBox显示您的字符串值（如果找到）..

Answer 4

实际上你有数据，可以很容易地表示为Dictionary<string, string>类型的字典：

var s = "Name: Daniel --- Phone Number: 3128623432 --- Age: 12 --- Occupation: Student";
var dictionary = s.Split(new string[] { "---" }, StringSplitOptions.None)
                  .Select(x => x.Split(':'))
                  .ToDictionary(x => x[0].Trim(), x => x[1].Trim());

现在您可以从输入字符串中获取任何值：

string occupation = dictionary["Occupation"];
int age = Int32.Parse(dictionary["Age"]);

如何在字符串中搜索单词然后在这个单词后面得到数字？

4 个答案: