Question

我正在学习C＃，并制作了一个控制台应用程序，该应用程序读取文本条目并搜索返回JSON值的API，然后通过控制台显示这些值。现在，我需要将其传递给图形环境，然后完成的工作是创建一个类“ MyClass”，并在该类中创建了一个方法“ MyMethod”，该方法将接收一个15位数字作为参数，并将查询API（例如控制台应用程序所做的操作），然后返回这些值。

我不知道如何正确创建方法以及如何从另一个类实例化该方法，因为它会产生错误。

我的JSON：

{
    "success": true,
    "result": {
        "id": "20429683581",
        "name": "CINEPLEX S.A",
        "Condition": "HABIDO",
        "PLE": "02\/01\/2013",
        "lawyers": [
            {
                "type": "DNI",
                "numdoc": "07871885",
                "name": "PONCE PINTO ALEJANDRO EDUARDO",
                "date": "22\/08\/2000"
            },
            {
                "type": "DNI",
                "numdoc": "09333203",
                "name": "SORIANO BARRANTES JOSE FERNANDO",
                "date": "22\/09\/2008"
            }
        ],
        "workers": [
            {
                "time": "2017-07",
                "service": "8"
            },
            {
                "time": "2018-06",
                "service": "13"
            }
        ]
    }
}

我有以下已定义的类：

public class Lawyer
{
    public string type { get; set; }
    public string numdoc { get; set; }
    public string name { get; set; }
    public string date { get; set; }
}

public class Worker
{
    public string time { get; set; }
    public string service { get; set; }
}

public class Result
{
    public string id { get; set; }
    public string name { get; set; }
    public string Condition { get; set; }
    public string PLE { get; set; }
    public List<Lawyer> lawyers { get; set; }
    public List<Worker> workers { get; set; }
}

public class RootObject
{
    public bool success { get; set; }
    public Result result { get; set; }
}

在控制台应用程序中，它们运行良好：

RootObject rootobject;

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(@"https://www.example.com/api/?get=" + inid);
HttpWebResponse response;

try
{
    response = (HttpWebResponse)request.GetResponse();
    Stream stream = response.GetResponseStream();
    StreamReader reader = new StreamReader(stream);
    {
        var json = reader.ReadToEnd();
        rootobject = JsonConvert.DeserializeObject<RootObject>(json);
    }
    if (rootobject.success == true)
    {
        Console.WriteLine("---------------");
        Console.WriteLine("ID: " + rootobject.result.id);
        Console.WriteLine("NAME: " + rootobject.result.name);
        Console.WriteLine("CONDITION: " + rootobject.result.Condition);
        Console.WriteLine("PLE: " + rootobject.result.PLE);
    }
    else
    {
        Console.WriteLine("---------------");
        Console.WriteLine("NOTHING");
    }
}
catch (Exception)
{
    Console.WriteLine("---------------");
    Console.WriteLine("ERROR");
}

此后，我已经使用MyClass迁移到基于GUI的应用程序：

class MyClass 
{
    public void MyMethod(int inRUC){
        RootObject rootobject;
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(@"https://www.example.com/api/?get=" + inRUC);
        HttpWebResponse response;

        response = (HttpWebResponse)request.GetResponse();
        Stream stream = response.GetResponseStream();
        StreamReader reader = new StreamReader(stream);
        {
            var json = reader.ReadToEnd();
            rootobject = JsonConvert.DeserializeObject<RootObject>(json);
        }
    }
}

现在，我想获取图形形式的文本条目的值，并实例化该类以获取结果并将其打印在相同形式的文本字段中，但是我不知道如何正确地实例化它以及如何进行实例化。为了正确放置值，这是我当前正在尝试的：（txtRuc1）是我对表单的输入，而EditText1是我对表单的输出：

private void Button1_ClickBefore(object sboObject, SAPbouiCOM.SBOItemEventArg pVal, out bool BubbleEvent)
{
    if (string.IsNullOrEmpty(txtRuc1.Value.ToString()))
    {
        BubbleEvent = false;
    }
    else
    {
//Ok, I known that it is wrong
        BubbleEvent = true;
        MyClass obj = new Sunat();
        EditText1.Value = obj.MyMethod(txtRuc1.value).rootobject.result.name;
    }
}

正确的格式是什么？ Visual Studio返回错误：无法在以下行中将“字符串”转换为“ int”：

obj.MyMethod(txtRuc1.value).rootobject.result.name

Answer 1

首先，您的MyMethod需要返回RootObject而不是void

public RootObject MyMethod(int inRUC){
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(@"https://www.example.com/api/?get=" + inRUC);
    HttpWebResponse response;

    response = (HttpWebResponse)request.GetResponse();
    Stream stream = response.GetResponseStream();
    StreamReader reader = new StreamReader(stream);
    {
        var json = reader.ReadToEnd();
        return JsonConvert.DeserializeObject<RootObject>(json);
    }
}

然后错误是由txtRuc1.value引起的，可能是字符串值，但是MyMethod方法需要int。

因此您可以尝试使用int.TryParse方法将输入值解析为int，并通过它。

int para = 0;
int.TryParse(txtRuc1.value,out para);

EditText1.Value = obj.MyMethod(para).rootobject.result.name;

C＃-实例化一个返回JSON对象的类

1 个答案: