ColumnAttribute.AutoSync 属性

定义

命名空间:

System.Data.Linq.Mapping

程序集:

System.Data.Linq.dll

获取或设置 AutoSync 枚举。

public:
 property System::Data::Linq::Mapping::AutoSync AutoSync { System::Data::Linq::Mapping::AutoSync get(); void set(System::Data::Linq::Mapping::AutoSync value); };

public System.Data.Linq.Mapping.AutoSync AutoSync { get; set; }

member this.AutoSync : System.Data.Linq.Mapping.AutoSync with get, set

Public Property AutoSync As AutoSync

属性值

AutoSync

AutoSync 值。

示例

[Column(Storage="_EmployeeID", AutoSync=AutoSync.OnInsert, DbType="Int NOT NULL IDENTITY", IsPrimaryKey=true, IsDbGenerated=true)]
public int EmployeeID
{
    get
    {
        return this._EmployeeID;
    }
    set
    {
        if ((this._EmployeeID != value))
        {
            this.OnEmployeeIDChanging(value);
            this.SendPropertyChanging();
            this._EmployeeID = value;
            this.SendPropertyChanged("EmployeeID");
            this.OnEmployeeIDChanged();
        }
    }
}

   <Column(Storage:="_EmployeeID", DbType:="Int", AutoSync:=AutoSync.OnInsert)> _
Public Property EmployeeID() As System.Nullable(Of Integer)
       Get
           Return Me._EmployeeID
       End Get
       Set(ByVal value As System.Nullable(Of Integer))
           If (Me._EmployeeID.Equals(value) = False) Then
               If Me._Employee.HasLoadedOrAssignedValue Then
                   Throw New System.Data.Linq.ForeignKeyReferenceAlreadyHasValueException
               End If
               Me.OnEmployeeIDChanging(value)
               Me.SendPropertyChanging()
               Me._EmployeeID = value
               Me.SendPropertyChanged("EmployeeID")
               Me.OnEmployeeIDChanged()
           End If
       End Set
   End Property