Question

我有这个员工DTO

Class Employee
{
   int Id {get; set;}
   string Name {get; set;}
}

在我的代码中，我收集了Employee对象＆amp;序列化如下所示

string JsonString = JsonConvert.SerializeObject(employees); // where employees is IEnumerable<Employee>

我到达的JsonString是

[{"Id":1,"Name":"John"},
{"Id":2,"Name":"Mark"},
{"Id":3,"Name":"Pete"}]

现在我想为json数组中的所有这些对象添加一个属性

[{"Id":1,"Name":"John","Department":"Computer Science"},
{"Id":2,"Name":"Mark","Department":"Computer Science"},
{"Id":3,"Name":"Pete","Department":"Computer Science"}]

挑战在于我不想在我现有的员工Dto中添加额外的“部门”财产。

请帮助。

Answer 1

您可以从员工创建中间anonymous type并序列化：

var extendedEmployees = employees.Select(employee => new
                        {
                            employee.Id,
                            employee.Name, 
                            Department = "Computer Science",
                        }

var json = JsonConvert.Serialize(extendedEmployees)

将属性添加到json数组的所有对象

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