Question

收到此错误：

Error   4   'ZoneUpdates.Models.PgeDataContext.PgeDataContext(string, System.Data.Linq.Mapping.MappingSource)' must declare a body because it is not marked abstract, extern, or partial    C:\Code\ZoneUpdates\ZoneUpdates\Models\PgeDataContext.cs    18  16  ZoneUpdates
Error   6   'ZoneUpdates.Models.ZoneObject.SendPropertyChanged(string)' must declare a body because it is not marked abstract, extern, or partial   C:\Code\ZoneUpdates\ZoneUpdates\Models\PgeDataContext.cs    42  32  ZoneUpdates

这四个类之间基本上有13个错误（以下两个）。

我正在使用4.0，我基本上从另一个项目中复制并粘贴了这个代码，它按预期工作。我已经尝试将类更改为部分，但无济于事。任何指针都表示赞赏。

[Database(Name = "Pge_Dev")]
public class PgeDataContext : DataContext
{
    public PgeDataContext(IDbConnection connection);
    public PgeDataContext(string dsn);
    public PgeDataContext(
              IDbConnection connection, 
              System.Data.Linq.Mapping.MappingSource mappingSource);
    public PgeDataContext(
              string connection, 
              System.Data.Linq.Mapping.MappingSource mappingSource);

    public Table<ZoneObject> ZoneObject { get; set; }
    public Table<ZoneObjType> ZoneObjType { get; set; }
    public Table<ZoneTypeBridge> ZoneTypeBridge { get; set; }
}

[Table(Name = "dbo.ZoneObject")]
public class ZoneObject : INotifyPropertyChanging, INotifyPropertyChanged
{
    public ZoneObject();

    [Column(Storage = "ID", DbType = "Int NOT NULL")]
    public int ID { get; set; }
    [Column(Storage = "Name", DbType = "nvarchar(30)")]
    public int Name { get; set; }
    [Column(Storage = "Value", DbType = "bigint")]
    public int Value { get; set; }
    [Column(Storage = "CancurrencyID", DbType = "Int NOT NULL")]
    public int ConcurrencyID { get; set; }

    public event PropertyChangedEventHandler PropertyChanged;
    public event PropertyChangingEventHandler PropertyChanging;

    protected virtual void SendPropertyChanged(string propertyName);
    protected virtual void SendPropertyChanging();
}

Answer 1

错误示例

没有身体的构造者

public PgeDataContext(IDbConnection connection);

=＆GT;你必须声明一个身体

public PgeDataContext(IDbConnection connection){ /*blibli*/ }

没有身体的方法

protected virtual void SendPropertyChanged(string propertyName);

=＆GT;您必须为非抽象，外部或部分方法声明一个正文，如错误消息中所述

protected virtual void SendPropertyChanged(string propertyName) { /*blabla*/ }

强类型数据上下文必须声明一个正文错误

1 个答案: