C#将类的复杂对象序列化为json
我想将以下类的新对象转换为json字符串。为此,我使用JavaScriptSerializer和Newtonsoft库。但这两个词的输出都是空括号({[],[]})C#将类的复杂对象序列化为json,c#,json,object,serialization,C#,Json,Object,Serialization,我想将以下类的新对象转换为json字符串。为此,我使用JavaScriptSerializer和Newtonsoft库。但这两个词的输出都是空括号({[],[]}) 使用系统; 使用系统集合; 使用System.Collections.Generic; 使用System.Linq; 使用系统文本; 使用系统数据; 名称空间My_实体 { 使用My_Entity.Interfaces; 使用My_Entity.Abstracts; 公共类tbl_类别实体:实体、Itbl_类别 { 私有Int32?
使用系统;
使用系统集合;
使用System.Collections.Generic;
使用System.Linq;
使用系统文本;
使用系统数据;
名称空间My_实体
{
使用My_Entity.Interfaces;
使用My_Entity.Abstracts;
公共类tbl_类别实体:实体、Itbl_类别
{
私有Int32?_类别ID;
私有字符串_CategoryName;
私有Int32?\u类型ID;
私有布尔?_-IsDel;
私有静态只读字符串_IdentityField=“CategoryID”;
私有静态只读SqlDbType _IdentitySqlDbType=SqlDbType.Int;
专用只读字典_FieldsSqlDbType;
公共Int32?类别ID
{
获取{return\u CategoryID;}
设置{u CategoryID=value;}
}
公共字符串类别名称
{
获取{return\u CategoryName;}
设置{u CategoryName=value;}
}
公共Int32?类型ID
{
获取{return\u TypeID;}
设置{u TypeID=value;}
}
公共布尔值
{
获取{return\u IsDel;}
设置{u IsDel=value;}
}
公共tbl_类别实体()
{
_FieldsSqlDbType=新字典()
{
{“CategoryID”,SqlDbType.Int},
{“CategoryName”,SqlDbType.NVarChar},
{“TypeID”,SqlDbType.Int},
{“IsDel”,SqlDbType.Bit}
}.Union(base.\u FilterFieldsSqlDbType).ToDictionary(k=>k.Key,v=>v.Value);
}
公共静态字符串GetIdentityField()
{
返回_IdentityField;
}
公共静态SqlDbType GetIdentitySqlDbType()
{
返回_IdentitySqlDbType;
}
公共重写SqlDbType GetSqlDbType(字符串属性名称)
{
返回_FieldsSqlDbType[PropertyName];
}
公共覆盖布尔IsIdentity(字符串属性名称)
{
返回PropertyName.Equals(_IdentityField);
}
}
}
tbl_类别实体a=新tbl_类别实体()
{
类别ID=12,
CategoryName=“嗨”
};
string json=new JavaScriptSerializer().Serialize(a);
如何修复它?基类(实体)是:
使用系统;
使用系统集合;
使用System.Collections.Generic;
使用System.Linq;
使用系统文本;
使用系统数据;
使用System.Data.Sql;
名称空间My_Entity.Abstracts
{
使用My_Entity.Interfaces;
公共抽象类实体:列表,其中T:new()
{
私有字符串_OrderColumn;
私有字符串_Order=“asc”;
私有Int32?\u页面索引=1;
私有Int32?_RowsPage=10;
受保护的只读字典\u filterFieldSqlDbType;
公共字符串OrderColumn
{
获取{return\u OrderColumn;}
设置{u OrderColumn=value;}
}
公共字符串秩序
{
获取{return\u Order;}
设置{u顺序=值;}
}
公共Int32?页面索引
{
获取{return\u PageIndex;}
设置{u PageIndex=value;}
}
公共Int32?RowsPage
{
获取{return\u RowsPage;}
设置{u RowsPage=value;}
}
公共实体()
{
_FilterFieldSqlDbType=新字典()
{
{“OrderColumn”,SqlDbType.VarChar},
{“Order”,SqlDbType.VarChar},
{“PageIndex”,SqlDbType.Int},
{“RowsPage”,SqlDbType.Int},
};
}
公共抽象SqlDbType GetSqlDbType(stringpropertyname);
公共抽象属性(字符串属性名称);
}
}
基类(实体)是:
使用系统;
使用系统集合;
使用System.Collections.Generic;
使用System.Linq;
使用系统文本;
使用系统数据;
使用System.Data.Sql;
名称空间My_Entity.Abstracts
{
使用My_Entity.Interfaces;
公共抽象类实体:列表,其中T:new()
{
私有字符串_OrderColumn;
私有字符串_Order=“asc”;
私有Int32?\u页面索引=1;
私有Int32?_RowsPage=10;
受保护的只读字典\u filterFieldSqlDbType;
公共字符串OrderColumn
{
获取{return\u OrderColumn;}
设置{u OrderColumn=value;}
}
公共字符串秩序
{
获取{return\u Order;}
设置{u顺序=值;}
}
公共Int32?页面索引
{
获取{return\u PageIndex;}
设置{u PageIndex=value;}
}
公共Int32?RowsPage
{
获取{return\u RowsPage;}
设置{u RowsPage=value;}
}
公共实体()
{
_FilterFieldSqlDbType=新字典()
{
{“OrderColumn”,SqlDbType.VarChar},
{“Order”,SqlDbType.VarChar},
{“PageIndex”,SqlDbType.Int},
{“RowsPage”,SqlDbType.Int},
};
}
公共抽象SqlDbType GetSqlDbType(stringpropertyname);
公共抽象属性(字符串属性名称);
}
}
好的,我认为问题在于您将实体类与实体集合类混合在一起了。我试图将集合与实体分开。请看一下这段代码,看看它是否对您有所帮助
namespace ConsoleApp1
{
using System;
using System.Linq;
using Newtonsoft.Json;
using System.Data;
using System.Collections.Generic;
class Program
{
static void Main(string[] args)
{
var t = new tbl_CategoryEntity
{
CategoryID = 12,
CategoryName = "Hi"
};
var collection = new tbl_CategoryEntityCollection();
collection.Add(t);
var entityJson = JsonConvert.SerializeObject(t);
var collectionJson = JsonConvert.SerializeObject(collection);
Console.WriteLine("Entity = \n" + entityJson);
Console.WriteLine("Collection = \n" + collectionJson);
Console.ReadKey();
}
}
public class tbl_CategoryEntity
{
private Int32? _CategoryID;
private String _CategoryName;
private Int32? _TypeID;
private Boolean? _IsDel;
public tbl_CategoryEntity() { }
public Int32? CategoryID
{
get { return _CategoryID; }
set { _CategoryID = value; }
}
public String CategoryName
{
get { return _CategoryName; }
set { _CategoryName = value; }
}
public Int32? TypeID
{
get { return _TypeID; }
set { _TypeID = value; }
}
public Boolean? IsDel
{
get { return _IsDel; }
set { _IsDel = value; }
}
}
public abstract class EntityCollection<T> : List<T> where T : new()
{
private String _OrderColumn;
private String _Order = "asc";
private Int32? _PageIndex = 1;
private Int32? _RowsPage = 10;
protected readonly Dictionary<string, SqlDbType> _FilterFieldsSqlDbType;
public String OrderColumn
{
get { return _OrderColumn; }
set { _OrderColumn = value; }
}
public String Order
{
get { return _Order; }
set { _Order = value; }
}
public Int32? PageIndex
{
get { return _PageIndex; }
set { _PageIndex = value; }
}
public Int32? RowsPage
{
get { return _RowsPage; }
set { _RowsPage = value; }
}
protected EntityCollection()
{
_FilterFieldsSqlDbType = new Dictionary<string, SqlDbType>()
{
{ "OrderColumn", SqlDbType.VarChar },
{ "Order", SqlDbType.VarChar },
{ "PageIndex", SqlDbType.Int },
{ "RowsPage", SqlDbType.Int },
};
}
public abstract SqlDbType GetSqlDbType(string PropertyName);
public abstract bool IsIdentity(string PropertyName);
}
public class tbl_CategoryEntityCollection : EntityCollection<tbl_CategoryEntity>
{
private static readonly string _IdentityField = "CategoryID";
private static readonly SqlDbType _IdentitySqlDbType = SqlDbType.Int;
private readonly Dictionary<string, SqlDbType> _FieldsSqlDbType;
public tbl_CategoryEntityCollection() : base()
{
_FieldsSqlDbType = new Dictionary<string, SqlDbType>()
{
{ "CategoryID", SqlDbType.Int },
{ "CategoryName", SqlDbType.NVarChar },
{ "TypeID", SqlDbType.Int },
{ "IsDel", SqlDbType.Bit }
}
.Union(base._FilterFieldsSqlDbType).ToDictionary(k => k.Key, v => v.Value);
}
public static string GetIdentityField()
{
return _IdentityField;
}
public static SqlDbType GetIdentitySqlDbType()
{
return _IdentitySqlDbType;
}
public override SqlDbType GetSqlDbType(string PropertyName)
{
return _FieldsSqlDbType[PropertyName];
}
public override bool IsIdentity(string PropertyName)
{
return PropertyName.Equals(_IdentityField);
}
}
}
名称空间控制台EAPP1
{
使用制度;
使用System.Linq;
使用Newtonsoft.Json;
使用系统数据;
使用System.Collections.Generic;
班级计划
{
静态void Main(字符串[]参数)
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.Sql;
namespace My_Entity.Abstracts
{
using My_Entity.Interfaces;
public abstract class Entity<T> : List<T>, IEntity where T : new()
{
private String _OrderColumn;
private String _Order = "asc";
private Int32? _PageIndex = 1;
private Int32? _RowsPage = 10;
protected readonly Dictionary<string, SqlDbType> _FilterFieldsSqlDbType;
public String OrderColumn
{
get { return _OrderColumn; }
set { _OrderColumn = value; }
}
public String Order
{
get { return _Order; }
set { _Order = value; }
}
public Int32? PageIndex
{
get { return _PageIndex; }
set { _PageIndex = value; }
}
public Int32? RowsPage
{
get { return _RowsPage; }
set { _RowsPage = value; }
}
public Entity()
{
_FilterFieldsSqlDbType = new Dictionary<string, SqlDbType>()
{
{ "OrderColumn", SqlDbType.VarChar },
{ "Order", SqlDbType.VarChar },
{ "PageIndex", SqlDbType.Int },
{ "RowsPage", SqlDbType.Int },
};
}
public abstract SqlDbType GetSqlDbType(string PropertyName);
public abstract bool IsIdentity(string PropertyName);
}
}
namespace ConsoleApp1
{
using System;
using System.Linq;
using Newtonsoft.Json;
using System.Data;
using System.Collections.Generic;
class Program
{
static void Main(string[] args)
{
var t = new tbl_CategoryEntity
{
CategoryID = 12,
CategoryName = "Hi"
};
var collection = new tbl_CategoryEntityCollection();
collection.Add(t);
var entityJson = JsonConvert.SerializeObject(t);
var collectionJson = JsonConvert.SerializeObject(collection);
Console.WriteLine("Entity = \n" + entityJson);
Console.WriteLine("Collection = \n" + collectionJson);
Console.ReadKey();
}
}
public class tbl_CategoryEntity
{
private Int32? _CategoryID;
private String _CategoryName;
private Int32? _TypeID;
private Boolean? _IsDel;
public tbl_CategoryEntity() { }
public Int32? CategoryID
{
get { return _CategoryID; }
set { _CategoryID = value; }
}
public String CategoryName
{
get { return _CategoryName; }
set { _CategoryName = value; }
}
public Int32? TypeID
{
get { return _TypeID; }
set { _TypeID = value; }
}
public Boolean? IsDel
{
get { return _IsDel; }
set { _IsDel = value; }
}
}
public abstract class EntityCollection<T> : List<T> where T : new()
{
private String _OrderColumn;
private String _Order = "asc";
private Int32? _PageIndex = 1;
private Int32? _RowsPage = 10;
protected readonly Dictionary<string, SqlDbType> _FilterFieldsSqlDbType;
public String OrderColumn
{
get { return _OrderColumn; }
set { _OrderColumn = value; }
}
public String Order
{
get { return _Order; }
set { _Order = value; }
}
public Int32? PageIndex
{
get { return _PageIndex; }
set { _PageIndex = value; }
}
public Int32? RowsPage
{
get { return _RowsPage; }
set { _RowsPage = value; }
}
protected EntityCollection()
{
_FilterFieldsSqlDbType = new Dictionary<string, SqlDbType>()
{
{ "OrderColumn", SqlDbType.VarChar },
{ "Order", SqlDbType.VarChar },
{ "PageIndex", SqlDbType.Int },
{ "RowsPage", SqlDbType.Int },
};
}
public abstract SqlDbType GetSqlDbType(string PropertyName);
public abstract bool IsIdentity(string PropertyName);
}
public class tbl_CategoryEntityCollection : EntityCollection<tbl_CategoryEntity>
{
private static readonly string _IdentityField = "CategoryID";
private static readonly SqlDbType _IdentitySqlDbType = SqlDbType.Int;
private readonly Dictionary<string, SqlDbType> _FieldsSqlDbType;
public tbl_CategoryEntityCollection() : base()
{
_FieldsSqlDbType = new Dictionary<string, SqlDbType>()
{
{ "CategoryID", SqlDbType.Int },
{ "CategoryName", SqlDbType.NVarChar },
{ "TypeID", SqlDbType.Int },
{ "IsDel", SqlDbType.Bit }
}
.Union(base._FilterFieldsSqlDbType).ToDictionary(k => k.Key, v => v.Value);
}
public static string GetIdentityField()
{
return _IdentityField;
}
public static SqlDbType GetIdentitySqlDbType()
{
return _IdentitySqlDbType;
}
public override SqlDbType GetSqlDbType(string PropertyName)
{
return _FieldsSqlDbType[PropertyName];
}
public override bool IsIdentity(string PropertyName)
{
return PropertyName.Equals(_IdentityField);
}
}
}