DbDataAdapter 构造函数

定义

初始化 DataAdapter 类的新实例。Initializes a new instance of a DataAdapter class.

重载

DbDataAdapter()

初始化 DataAdapter 类的新实例。Initializes a new instance of a DataAdapter class.

DbDataAdapter(DbDataAdapter)

从同一类型的现有对象中初始化 DataAdapter 类的新实例。Initializes a new instance of a DataAdapter class from an existing object of the same type.

DbDataAdapter()

初始化 DataAdapter 类的新实例。Initializes a new instance of a DataAdapter class.

protected:
 DbDataAdapter();
protected DbDataAdapter ();
Protected Sub New ()

注解

当你创建的实例时 DbDataAdapter ,以下读/写属性将设置为以下初始值。When you create an instance of DbDataAdapter, the following read/write properties are set to the following initial values.

属性Properties 初始值Initial value
SelectCommand 一个新的 IDbCommandA new IDbCommand.
InsertCommand 一个新的 IDbCommandA new IDbCommand.
DeleteCommand 一个新的 IDbCommandA new IDbCommand.
UpdateCommand 一个新的 IDbCommandA new IDbCommand.
MissingMappingAction MissingMappingAction.Passthrough
MissingSchemaAction MissingSchemaAction.Add

可以通过单独调用属性来更改任何这些属性的值。You can change the value of any of these properties through a separate call to the property.

适用于

DbDataAdapter(DbDataAdapter)

从同一类型的现有对象中初始化 DataAdapter 类的新实例。Initializes a new instance of a DataAdapter class from an existing object of the same type.

protected:
 DbDataAdapter(System::Data::Common::DbDataAdapter ^ adapter);
protected DbDataAdapter (System.Data.Common.DbDataAdapter adapter);
new System.Data.Common.DbDataAdapter : System.Data.Common.DbDataAdapter -> System.Data.Common.DbDataAdapter
Protected Sub New (adapter As DbDataAdapter)

参数

adapter
DbDataAdapter

用于创建新 DataAdapterDataAdapter 对象。A DataAdapter object used to create the new DataAdapter.

注解

构造函数的此重载 DbDataAdapter 旨在供 .NET Framework 数据提供程序在实现在克隆实现中使用的类似构造函数时使用。This overload of the DbDataAdapter constructor is designed for use by a .NET Framework data provider when implementing a similar constructor for use in a clone implementation.

适用于