我的model类如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

public class model
{
public model()
{
}
private string name;

public string Name
{
get { return name; }
set { name = value; }
}

private int age;

public int Age
{
get { return age; }
set { age = value; }
}
}

我想在某个类的代码中调用上面这个model类，把它它转为字符串：

string json = "["
+"{'name':'name','type':'string'},"
+ "{'name':'age','type':'int'}"
+"]";

如果可以最好可以给某个字段加个属性：如：

string json = "["

+"{'name':'name','type':'string','sortable':true},"

+ "{'name':'age','type':'int'}"
+"]";

求高手指点