我想从json获得特定的字段值

Question

如何从json数据下面获取combined_rate值

{
    "rate": {
        "zip": "10005",
        "state": "NY",
        "state_rate": "0.04",
        "county": "NEW YORK",
        "county_rate": "0.0",
        "city": "NEW YORK CITY",
        "city_rate": "0.045",
        "combined_district_rate": "0.00375",
        "combined_rate": "0.08875"
    }
}

请提前帮助此致谢

Answer 1

您可以定义自定义类：

internal class Data
{
    public Rate rate;
}

internal class Rate
{
    public float combined_rate;
}

将此字符串反序列化为object：

var s = new JavaScriptSerializer();
var o = s.Deserialize<Data>(json);
var value = o.rate.combined_rate;

此外，您可以从字符串中提取其他值，只需将新字段添加到Data类。