C#尝试拆分字符串以获取json对象值

我正在尝试拆分一个字符串以获取json对象值-我的文本值有很多行，格式如下：

new Car() { Id = 1, Year = 1926, Make = "Chrysler", Model = "Imperial", ImageUrl = "{"data":{"images":[{"thumb_url":"https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcRPe4CygIW-MuZL5jl77wlgXXK5_ANyC9l1X4QqLizCOkaVAlRe","image_url":"http://imperialclub.org/Yr/1926/photos/Phaeton2Big.jpg","width":1632,"height":1032}]},"error_code":0,"error":false,"message":"1 images(s) available"}" },
new Car() { Id = 2, Year = 1950, Make = "Hillman", Model = "Minx Magnificent", ImageUrl = "{"data":{"images":[{"thumb_url":"https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcScVsGEeRBh6xZYXr6Gm35Sk5ecSlk_ax3qZmoGRAtBbZC8vJZ9","image_url":"http://i.ebayimg.com/images/g/gcIAAOSwKadXPeLs/s-l300.jpg","width":300,"height":225}]},"error_code":0,"error":false,"message":"1 images(s) available"}" },
new Car() { Id = 3, Year = 1954, Make = "Chevrolet", Model = "Corvette", ImageUrl = "{"data":{"images":[{"thumb_url":"https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcSdZntu4tgWrZrxwqeuKlteCP9vJGnqUlmNq5JF1bBCf-EJy5r8","image_url":"http://momentcar.com/images/chevrolet-corvette-1954-1.jpg","width":1000,"height":600}]},"error_code":0,"error":false,"message":"1 images(s) available"}" },

new Car() { Id = 1, Year = 1926, Make = "Chrysler", Model = "Imperial", ImageUrl = "https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcRPe4CygIW-MuZL5jl77wlgXXK5_ANyC9l1X4QqLizCOkaVAlRe" },
new Car() { Id = 2, Year = 1950, Make = "Hillman", Model = "Minx Magnificent", ImageUrl = "https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcScVsGEeRBh6xZYXr6Gm35Sk5ecSlk_ax3qZmoGRAtBbZC8vJZ9" },
new Car() { Id = 3, Year = 1954, Make = "Chevrolet", Model = "Corvette", ImageUrl = "https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcSdZntu4tgWrZrxwqeuKlteCP9vJGnqUlmNq5JF1bBCf-EJy5r8" },

我真正想要的是以以下格式获得它们：

new Car() { Id = 1, Year = 1926, Make = "Chrysler", Model = "Imperial", ImageUrl = "{"data":{"images":[{"thumb_url":"https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcRPe4CygIW-MuZL5jl77wlgXXK5_ANyC9l1X4QqLizCOkaVAlRe","image_url":"http://imperialclub.org/Yr/1926/photos/Phaeton2Big.jpg","width":1632,"height":1032}]},"error_code":0,"error":false,"message":"1 images(s) available"}" },
new Car() { Id = 2, Year = 1950, Make = "Hillman", Model = "Minx Magnificent", ImageUrl = "{"data":{"images":[{"thumb_url":"https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcScVsGEeRBh6xZYXr6Gm35Sk5ecSlk_ax3qZmoGRAtBbZC8vJZ9","image_url":"http://i.ebayimg.com/images/g/gcIAAOSwKadXPeLs/s-l300.jpg","width":300,"height":225}]},"error_code":0,"error":false,"message":"1 images(s) available"}" },
new Car() { Id = 3, Year = 1954, Make = "Chevrolet", Model = "Corvette", ImageUrl = "{"data":{"images":[{"thumb_url":"https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcSdZntu4tgWrZrxwqeuKlteCP9vJGnqUlmNq5JF1bBCf-EJy5r8","image_url":"http://momentcar.com/images/chevrolet-corvette-1954-1.jpg","width":1000,"height":600}]},"error_code":0,"error":false,"message":"1 images(s) available"}" },

new Car() { Id = 1, Year = 1926, Make = "Chrysler", Model = "Imperial", ImageUrl = "https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcRPe4CygIW-MuZL5jl77wlgXXK5_ANyC9l1X4QqLizCOkaVAlRe" },
new Car() { Id = 2, Year = 1950, Make = "Hillman", Model = "Minx Magnificent", ImageUrl = "https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcScVsGEeRBh6xZYXr6Gm35Sk5ecSlk_ax3qZmoGRAtBbZC8vJZ9" },
new Car() { Id = 3, Year = 1954, Make = "Chevrolet", Model = "Corvette", ImageUrl = "https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcSdZntu4tgWrZrxwqeuKlteCP9vJGnqUlmNq5JF1bBCf-EJy5r8" },

我知道我可以使用

JObject.Parse（数据）

解析json值——但仅仅尝试获取它就有点像噩梦了。有更好的方法吗

到目前为止，我所拥有的：

static void Main(string[] args)
    {

        using (StreamWriter writer = new StreamWriter(@"c:\Data\temp\output.txt")) // file to write to
        {
            using (StreamReader reader = new StreamReader(@"c:\Data\temp\test.txt")) //file to read from
            {
                string line;

                while (reader.ReadLine() != null)
                {
                    line = reader.ReadLine();

                    string[] words = JsonSplitString(line);

                    string json = words[1];

                    writer.WriteLine("{0}", json);
                }
            }
        }

    }

    static string[] JsonSplitString(string data)
    {
        return data.Split(new string[] { "ImageUrl" }, StringSplitOptions.None);
    }

---

然而，我得到了一个

NullReferenceException

——即使字符串被传递到

JsonSplitString

方法。

您调用了

reader.Readline（）

两次：一次用于比较，然后在循环内部再次调用。你实际上是在跳过每一行。可能发生的情况是，您正在到达文件的末尾，然后再次调用

reader.Readline（）

，该值为空。请尝试以下方法：

line = reader.ReadLine();
while (line != null)
{
    string[] words = JsonSplitString(line);
    string json = words[1];
    writer.WriteLine("{0}", json);
    line = reader.ReadLine();
}

---

我发现，

CS0029无法隐式地将类型“string”转换为“bool”

错误，而（line=reader.ReadLine（））line我的错误。是的，这就是你需要的。我还在我的答案中添加了一个替代编辑。抱歉，我把Javascript和C#混在一起了。读取json对象的最好方法是使用反序列化器。请参阅此问题的答案：谢谢，但我需要能够访问字符串以对其进行反序列化。