Question

我有{4}列DataTable。 (ID,TestName,TestResult,IsValidRequest)。我想转变TestName＆amp; Testresult json。{/ p>

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string json = Newtonsoft.Json.JsonConvert.SerializeObject(dt);

变量'json'中的当前JSON：

[  
   {  
      "TestID":1,
      "TestName":"wifi_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":7,
      "TestName":"mic_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":8,
      "TestName":"video_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":12,
      "TestName":"touch_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":14,
      "TestName":"proximity_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":15,
      "TestName":"vibrator_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":20,
      "TestName":"power_key",
      "TestResult":"2",
      "IsValidRequest":1
   },
   {  
      "TestID":21,
      "TestName":"accelerometer",
      "TestResult":"0",
      "IsValidRequest":1
   },
   {  
      "TestID":22,
      "TestName":"earphone",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":11,
      "TestName":"memory_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":29,
      "TestName":"memory_internalSD",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":30,
      "TestName":"memory_internalSDSize",
      "TestResult":"25.0GB",
      "IsValidRequest":1
   },
   {  
      "TestID":31,
      "TestName":"memory_externalSD",
      "TestResult":"0",
      "IsValidRequest":1
   },
   {  
      "TestID":32,
      "TestName":"memory_externalSDSize",
      "TestResult":"",
      "IsValidRequest":1
   },
   {  
      "TestID":33,
      "TestName":"memory_internalflash",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":34,
      "TestName":"memory_internalflashSize",
      "TestResult":"2.0GB",
      "IsValidRequest":1
   },
   {  
      "TestID":35,
      "TestName":"memory_ram",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":36,
      "TestName":"memory_ramsize",
      "TestResult":"2.0GB",
      "IsValidRequest":1
   },
   {  
      "TestID":13,
      "TestName":"lcd_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":28,
      "TestName":"lcd_broken",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":37,
      "TestName":"key_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":16,
      "TestName":"vol_key_up",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":17,
      "TestName":"vol_key_down",
      "TestResult":"0",
      "IsValidRequest":1
   },
   {  
      "TestID":18,
      "TestName":"menu_key",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":10,
      "TestName":"headset_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":38,
      "TestName":"headset_leftearphone",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":39,
      "TestName":"headset_rightearphone",
      "TestResult":"0",
      "IsValidRequest":1
   },
   {  
      "TestID":27,
      "TestName":"camera_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":40,
      "TestName":"camera_cameracount",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":5,
      "TestName":"camera_frontcam",
      "TestResult":"0",
      "IsValidRequest":1
   },
   {  
      "TestID":6,
      "TestName":"camera_backcam",
      "TestResult":"0",
      "IsValidRequest":1
   },
   {  
      "TestID":2,
      "TestName":"battery_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":45,
      "TestName":"battery_type",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":41,
      "TestName":"battery_level",
      "TestResult":"83",
      "IsValidRequest":1
   },
   {  
      "TestID":42,
      "TestName":"battery_status",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":43,
      "TestName":"battery_voltage",
      "TestResult":"4204",
      "IsValidRequest":1
   },
   {  
      "TestID":44,
      "TestName":"battery_temperature",
      "TestResult":"310",
      "IsValidRequest":1
   },
   {  
      "TestID":3,
      "TestName":"battery_accharging",
      "TestResult":"0",
      "IsValidRequest":1
   },
   {  
      "TestID":4,
      "TestName":"battery_usbcharging",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":9,
      "TestName":"audio_result",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":19,
      "TestName":"home_key",
      "TestResult":"1",
      "IsValidRequest":1
   },
   {  
      "TestID":46,
      "TestName":"back_key",
      "TestResult":"1",
      "IsValidRequest":1
   }
]

必需的JSON：

{  
   "wifi_result":"1",
   "mic_result":"1",
   "video_result":"1",
   "touch_result":"1",
   "proximity_result":"1",
   "vibrator_result":"1",
   "power_key":"2",
   "accelerometer":"0",
   "earphone":"1",
   "memory_result":"1",
   "memory_internalSD":"1",
   "memory_internalSDSize":"25.0GB",
   "memory_externalSD":"0",
   "memory_externalSDSize":"",
   "memory_internalflash":"1",
   "memory_internalflashSize":"2.0GB",
   "memory_ram":"1",
   "memory_ramsize":"2.0GB",
   "lcd_result":"1",
   "lcd_broken":"1",
   "key_result":"1",
   "vol_key_up":"1",
   "vol_key_down":"0",
   "menu_key":"1",
   "headset_result":"1",
   "headset_leftearphone":"1",
   "headset_rightearphone":"0",
   "camera_result":"1",
   "camera_cameracount":"1",
   "camera_frontcam":"0",
   "camera_backcam":"0",
   "battery_result":"1",
   "battery_type":"1",
   "battery_level":"83",
   "battery_status":"1",
   "battery_voltage":"4204",
   "battery_temperature":"310",
   "battery_accharging":"0",
   "battery_usbcharging":"1",
   "audio_result":"1",
   "home_key":"1",
   "back_key":"1"
}

请建议任何解决方案？

Answer 1

首先将DataTable转换为Dictionary，然后序列化为json。

Dictionary<string, string> dict = 
    dt.AsEnumerable()
    .ToDictionary<DataRow, string, string>(row => row.Field<string>(1),
                                           row => row.Field<string>(2));

string json = Newtonsoft.Json.JsonConvert.SerializeObject(dict);

Answer 2

Dictionary<string, string> tests = new Dictionary<string, string>();

foreach (DataRow row in dt.Rows)
{
    var testName = (string)row["TestName"];
    var testResult = (string)row["TestResult"];

    if (!tests.ContainsKey(testName))
        tests.Add(testName, testResult);
}

string json = Newtonsoft.Json.JsonConvert.SerializeObject(tests);

当键是新的＆＃34;属性＆＃34;时，您将把相关值放在字典中。并且值是JSON输出的所需值。序列化时，JSON键和值将从字典键值对中获取。

ContainsKey检查很重要，因为您没有进行验证以确保每次测试只出现一次。如果在创建字典时有多个记录具有相同的测试，则会抛出ArgumentException

Answer 3

尝试：

        Dictionary<string, object> data = new Dictionary<string, object>();
        for (int i= 0; i < dt.Rows.Count; ++i)
            data.Add(dt.Rows[i]["TestName"].ToString(), dt.Rows[i]["TestResult"]);
        string json = Newtonsoft.Json.JsonConvert.SerializeObject(data);

如何使用C＃将DataTable值转换为json？

3 个答案: