[英]Reading and displaying data from CSV file on Windows Form Application using C#
[英]Displaying data from my .json file in a windows form in C#
最近几天我一直在阅读有关此问题的文章,并且有很多类似的问题,但没有一个对我有帮助。
我的数据在 my.json 文件中,格式如下:
{
"Run from 27.09.2021 19:47:22": {
"decksize": 52,
"correctcards": 23,
"time2mem": "00:00:5434",
"time2sor": "00:00:4214",
"mempalaces": [ "none" ],
"troublecards": [ "none" ]
}
,
"Run from 27.09.2021 19:47:29": {
"decksize": 32,
"correctcards": 1,
"time2mem": "00:00:5628",
"time2sor": "00:00:5724",
"mempalaces": [ "none" ],
"troublecards": [ "none" ]
},
"Run from 27.09.2021 19:47:36": {
"decksize": 32,
"correctcards": 11,
"time2mem": "00:00:6224",
"time2sor": "00:00:5201",
"mempalaces": [ "none" ],
"troublecards": [ "none" ]
}
}
我想在 datagridview 或其他任何最简单的方法中显示它(如果列表框更容易,那就这样吧)。
我试图使用Newtonsoft.Json
将其反序列化为 object,但我希望找到一种仅使用System.Text.Json
和System.Text.Json.Serialization
的方法,因为这两个在我的项目中对我有用。
我目前正在这样反序列化: data = JsonSerializer.Deserialize<values_advanced>(jsonString);
并像这样绑定我的数据源: dbHistory.DataSource = data;
但是当我开始我的程序时网格是空的。
我还尝试将 jsonString 转换为 DataTable,如下所示: var data2 = JsonConvert.DeserializeObject<List<values_advanced>>(jsonString);
但我遇到了一个错误,声称 NewtonSoft 遇到了并发症。 我在这里粘贴了整个错误。
任何帮助将不胜感激,因为我现在大部分空闲时间都花在了这个问题上并且它开始困扰我。
我附上了 Excel 的屏幕截图,以可视化我希望如何可视化数据:数据
一些注意事项:您的 JSON 结构的外部类型相当于 C# 中的字典。您不能将字典类型用作视图的数据源。 您需要将字典转换为IEnumerable
,一个简单的方法是通过 LINQ:
Dictionary<string, RunData> dict = JsonConvert.Deserialize<Dictionary<string, RunData>>(jsonString);
IEnumerable<RunData> data = dict.Values.ToList();
...
创建data
后,您可以将 DataGridView 的数据源设置为可枚举的。
使用 System.Text.Json 试试这个
var list = JsonSerializer.Deserialize<Dictionary<string,Data>>(json).Values.ToList();
但是您需要将 arrays 转换为字符串才能将其用作网格视图的数据源,所以
List<GvData> dataSource = list.Select(v => new GvData
{
Decksize = v.Decksize,
Correctcards = v.Correctcards,
Time2Mem = v.Time2Mem,
Time2Sor = v.Time2Sor,
Mempalaces = string.Join(",", v.Mempalaces),
Troublecards = string.Join(",", v.Troublecards)
}).ToList();
.....
dbHistory.DataSource = dataSource ;
类
public partial class Data
{
[JsonPropertyName("decksize")]
public long Decksize { get; set; }
[JsonPropertyName("correctcards")]
public long Correctcards { get; set; }
[JsonPropertyName("time2mem")]
public string Time2Mem { get; set; }
[JsonPropertyName("time2sor")]
public string Time2Sor { get; set; }
[JsonPropertyName("mempalaces")]
public string[] Mempalaces { get; set; }
[JsonPropertyName("troublecards")]
public string[] Troublecards { get; set; }
}
public partial class GvData
{
public long Decksize { get; set; }
public long Correctcards { get; set; }
public string Time2Mem { get; set; }
public string Time2Sor { get; set; }
public string Mempalaces { get; set; }
public string Troublecards { get; set; }
}
这应该有所帮助。 首先,您需要一个 class 来描述您的格式...
[Serializable()]
public class MyRuns
{
public string Run_Name { get; set; }
public int decksize { get; set; }
public int correctcards { get; set; }
public string time2mem { get; set; }
public string time2sor { get; set; }
public string mempalaces { get; set; }
public string troublecards { get; set; }
}
using System.Text.Json;
我不得不对你的 json 做一些细微的改动,但这有效......
string strJson = @"[{
""Run_Name"": ""Run from 27.09.2021 19:47:22"",
""decksize"": 52,
""correctcards"": 23,
""time2mem"": ""00:00:5434"",
""time2sor"": ""00:00:4214"",
""mempalaces"": ""none"",
""troublecards"": ""none""
},
{
""Run_Name"": ""Run from 27.09.2021 19:47:29"",
""decksize"": 32,
""correctcards"": 1,
""time2mem"": ""00:00:5628"",
""time2sor"": ""00:00:5724"",
""mempalaces"": ""none"",
""troublecards"": ""none""
},
{
""Run_Name"": ""Run from 27.09.2021 19:47:36"",
""decksize"": 32,
""correctcards"": 11,
""time2mem"": ""00:00:6224"",
""time2sor"": ""00:00:5201"",
""mempalaces"": ""none"",
""troublecards"": ""none""
}
]";
List<MyRuns> myRuns = JsonSerializer.Deserialize<List<MyRuns>>(strJson);
foreach(var r in myRuns)
{
Console.WriteLine("--------------------------------------");
Console.WriteLine("Run Name: " + r.Run_Name);
Console.WriteLine("decksize: " + r.decksize);
Console.WriteLine("correctcards: " + r.correctcards.ToString());
Console.WriteLine("time2mem: " + r.time2mem.ToString());
Console.WriteLine("time2sor: " + r.time2sor.ToString());
Console.WriteLine("mempalaces: " + r.mempalaces);
Console.WriteLine("troublecards: " + r.troublecards);
Console.WriteLine("----------------------------------------");
}
Output:
--------------------------------------
Run Name: Run from 27.09.2021 19:47:22
decksize: 52
correctcards: 23
time2mem: 00:00:5434
time2sor: 00:00:4214
mempalaces: none
troublecards: none
----------------------------------------
--------------------------------------
Run Name: Run from 27.09.2021 19:47:29
decksize: 32
correctcards: 1
time2mem: 00:00:5628
time2sor: 00:00:5724
mempalaces: none
troublecards: none
----------------------------------------
--------------------------------------
Run Name: Run from 27.09.2021 19:47:36
decksize: 32
correctcards: 11
time2mem: 00:00:6224
time2sor: 00:00:5201
mempalaces: none
troublecards: none
----------------------------------------
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