c# - jquery如何在c#中编写正确的json对象

Question

在 C# 中编写 json 对象的最佳方法是什么？我有一段代码应该从数据库获取数据并写入 json 对象，但我还没有弄清楚这一点

[WebMethod]
public static string get_specialities(string ProfessionalID)
{
    Database db = DatabaseFactory.CreateDatabase("Connection String2");
    DbCommand dbCommand;
    dbCommand = db.GetStoredProcCommand("select_Professionals_Speciality");
    db.AddInParameter(dbCommand, "prof_id", DbType.Int16, Convert.ToInt16(ProfessionalID));
    IDataReader dr = db.ExecuteReader(dbCommand);
    //[{ id: 3, name: "test3" }]
    string return_str="[";
    int i = 0;
    while (dr.Read()) {
        if (i > 0)
            return_str += ",";
        return_str += "{id:" + dr["SpecialtyID"].ToString().Trim() + ",name:" + dr["SpecialtyName"].ToString().Trim() + "}";
        i++;
    }
    return_str += "]";
    return return_str;
}

这将返回下面的对象，该对象的格式错误

{"d":"[{id:67,name:Kardiyoloji}]"}

我做错了什么？

Answer 1

使用 JavaScriptSerializer class 尝试此操作:

List<Person> people = new List<Person>();
Person p = new Person();

while (dr.Read()) {
    p = new Person();
    p.id = dr["SpecialtyID"].ToString().Trim();
    p.name = dr["SpecialtyName"].ToString().Trim();
    people.Add(p);
}

JavaScriptSerializer serializer = new JavaScriptSerializer();
string return_str = serializer.Serialize(people);