与解析名称 - 值对的字符串 [英] parse a string with name-value pairs

问题描述

我如何解析名称 - 值对下列字符串在C＃中：

How can I parse the following string of name-value pair in C#:

string studentDetail = "StudentId=J1123,FirstName=Jack,LastName=Welch,StudentId=k3342,FirstName=Steve,LastName=Smith"

的

解析此阵的目的是使用LINQ to SQL的数据库中插入值：

The purpose of parsing this array is to insert values in DB using Linq to SQL:

    [HttpPost()]
    public ActionResult SaveStudent(string studentDetail)
    {
        DataContext db = new DataContext();         

                Student student = new Student();
                {
                    student.StudentID = //StudentID
                    student.FirstName = //FirstName
                    student.LastName = //LastName

                };

                db.Student.InsertOnSubmit(student);
                db.SubmitChanges();

            return View();
    }

这是什么将至？

What is the best way of approaching this?

推荐答案

您可以拆分的逗号，然后在等号。我把数据放到一个字典，方便访问。

You can split on the comma, then on the equals sign. I put the data into a dictionary for easy access.

string input = "StudentId=J1123,FirstName=Jack,LastName=Welch,StudentId=k3342,FirstName=Steve,LastName=Smith";

Dictionary<string,string> keyValuePairs = input.Split(',')
  .Select(value => value.Split('='))
  .ToDictionary(pair => pair[0], pair => pair[1]);

string StudentID = keyValuePairs[StudentId];

请注意，这是不验证输入不惜一切，以确保没有逗号值，无钥匙没有价值，丢失的钥匙等。

Note that this isn't validating the input at all to ensure that there are no commas in values, no keys without values, missing keys, etc.

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