質問編集履歴
9
文章修正
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test
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@@ -162,10 +162,4 @@
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165
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環境： Windows 10, Microsoft Visual Studio Community 2019, .Net Framework 4.6.1
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165
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環境： Windows 10, Microsoft Visual Studio Community 2019, .Net Framework 4.6.1
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166
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-
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using System.Text.Json.Serialization;
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168
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-
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using System;
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170
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171
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using System.Collections.Generic;
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8
コンソールアプリパターン
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test
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@@ -84,4 +84,88 @@
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コンソールアプリ .NET Core 3.1 で書き直したものはこちらです。
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88
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89
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```c#
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90
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91
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namespace ConsoleApp2
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92
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93
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{
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94
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95
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public class Question
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96
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97
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{
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98
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99
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public string description;
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100
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101
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public List<string> Options = new List<string>();
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102
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103
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public Question() { }
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104
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105
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}
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106
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107
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108
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109
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class Program
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110
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111
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{
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112
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113
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static void Main(string[] args)
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114
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115
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{
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116
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117
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var qs = new List<Question>();
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118
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/* qsに色々入れる */
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var q = new Question();
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122
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q.description = "aa";
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125
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q.Options = new List<string> { "a11", "a12", "a13", "a14", };
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126
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127
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qs.Add(q);
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128
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129
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q = new Question();
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130
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q.description = "bb";
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132
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q.Options = new List<string> { "b11", "b12", "b13", "b14", };
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134
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135
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qs.Add(q);
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136
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137
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138
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var j = JsonSerializer.Serialize<List<Question>>(qs);
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var j2 = JsonSerializer.Serialize<Question>(qs[0]);
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142
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var j3 = JsonSerializer.Serialize(qs);
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var j4 = JsonSerializer.Serialize(qs[0]);
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Console.WriteLine(j);
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148
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Console.WriteLine(j2);
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150
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151
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Console.WriteLine(j3);
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152
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Console.WriteLine(j4);
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154
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155
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}
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156
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}
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158
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159
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}
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160
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161
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```
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162
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163
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164
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87
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-
環境： Windows 10, Microsoft Visual Studio Community 2019, .Net Framework 4.6.1
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165
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環境： Windows 10, Microsoft Visual Studio Community 2019, .Net Framework 4.6.1using System.Text.Json;
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using System.Text.Json.Serialization;
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168
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169
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using System;
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170
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171
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using System.Collections.Generic;
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7
パターン追加
test
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File without changes
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test
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@@ -62,4 +62,26 @@
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62
62
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63
63
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64
64
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65
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さらに試した事：
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66
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67
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```c#
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68
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69
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var j1 = JsonSerializer.Serialize<List<Question>>(qs);
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70
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71
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var j2 = JsonSerializer.Serialize<Question[]>(qs.ToArray());
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72
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73
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var j3 = JsonSerializer.Serialize<Question>(qs[0]);
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74
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75
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var j4 = JsonSerializer.Serialize<Object>(qs[0]);
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77
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var j5 = JsonSerializer.Serialize(qs[0]);
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78
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79
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var j6 = JsonSerializer.Serialize(qs);
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80
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81
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```
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82
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83
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これら全て空になりました。
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84
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85
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86
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65
87
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環境： Windows 10, Microsoft Visual Studio Community 2019, .Net Framework 4.6.1
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6
その後 追記
test
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File without changes
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test
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@@ -52,4 +52,14 @@
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52
52
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53
53
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54
54
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55
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その後：
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56
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57
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.Net Framework 4.7.2
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58
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59
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.NET Core 3.1
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60
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61
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で、同じことを試した結果、上記と同じ結果になりました。
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62
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63
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64
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55
65
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環境： Windows 10, Microsoft Visual Studio Community 2019, .Net Framework 4.6.1
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5
usingを追加
test
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test
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@@ -5,6 +5,8 @@
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5
5
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```c#
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6
6
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7
7
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using System.Text.Json;
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8
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+
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9
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+
using System.Text.Json.Serialization;
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8
10
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9
11
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/* 略 */
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10
12
|
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4
追記
test
CHANGED
|
File without changes
|
test
CHANGED
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@@ -1,4 +1,6 @@
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1
1
|
System.Text.Json で独自クラスのリストをSerializeしたのですが、中身が空っぽになってしまいました。
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2
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+
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3
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+
System.Text.Json は NuGet パッケージでインストールしてあります。
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2
4
|
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3
5
|
```c#
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4
6
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3
pubricに変更
test
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File without changes
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test
CHANGED
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@@ -8,7 +8,7 @@
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8
8
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9
9
|
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10
10
|
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|
11
|
-
i
|
|
11
|
+
public class Question
|
|
12
12
|
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|
13
13
|
{
|
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14
14
|
|
2
追記
test
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File without changes
|
test
CHANGED
|
@@ -48,4 +48,4 @@
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48
48
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49
49
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50
50
|
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|
51
|
-
環境： Windows 10, Microsoft Visual Studio Community 2019
|
|
51
|
+
環境： Windows 10, Microsoft Visual Studio Community 2019, .Net Framework 4.6.1
|
1
追記
test
CHANGED
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File without changes
|
test
CHANGED
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@@ -1,3 +1,5 @@
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1
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+
System.Text.Json で独自クラスのリストをSerializeしたのですが、中身が空っぽになってしまいました。
|
|
2
|
+
|
|
1
3
|
```c#
|
|
2
4
|
|
|
3
5
|
using System.Text.Json;
|