Linq查询控制台应用程序 [英] Linq query for console application

问题描述

i have a code like

public class Student
{
public int StudentID { get; set; }
public string SName { get; set; }
public List<string> Course;
}

static List<Student> students = new List<Student>
{
new Student {StudentID=1, SName="koundinya"},
new Student {StudentID=2, SName="sarma"},
new Student {StudentID=3, SName="madhava"},
};

now my question is using LINQ can i add more courses to the students and no database and through console application only

????

What I have tried:

<pre lang="C#"><pre lang="C#">i have a code like

public class Student
{
public int StudentID { get; set; }
public string SName { get; set; }
public List&lt;string&gt; Course;
}

static List&lt;Student&gt; students = new List&lt;Student&gt;
{
new Student {StudentID=1, SName=&quot;koundinya&quot;},
new Student {StudentID=2, SName=&quot;sarma&quot;},
new Student {StudentID=3, SName=&quot;madhava&quot;},
};

推荐答案

您无法使用LINQ添加数据。 />


您可能需要做以下事情：

You can't use LINQ to add data.

You probably have to do something like this:

Student student = students.Where(x=>x.StudentID == 1).FirstOrDefault();
if (student != null)
{
    if (studemt.Courses == null)
    {
        student.Courses = new List<string>();
    }
    student.Courses.AddRange(new string[]{"course #1", "course #1", "course #3",...});
}

不使用LINQ，只需普通代码

Not using LINQ, just normal code

students.Add(new Student {StudentID=123, SName="John"});

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