Поделиться через


Класс ConnectionManager

Provides the information that you must have to connect to a data source. All classes that inherit from the ConnectionManager contain the same properties and methods. The ConnectionManager class isolates the implementation details of the different connection types from the runtime. This enables the runtime to interact with each connection manager in a consistent and predictable manner. Connection managers contain a set of stock properties that all connections have in common, such as the Name, ID, Description, and ConnectionString. However, each connection type has additional properties that are specific to that connection type. These can be accessed through the Properties collection.This class cannot be inherited.

Иерархия наследования

System.Object
  Microsoft.SqlServer.Dts.Runtime.DtsObject
    Microsoft.SqlServer.Dts.Runtime.ConnectionManager

Пространство имен:  Microsoft.SqlServer.Dts.Runtime
Сборка:  Microsoft.SqlServer.ManagedDTS (в Microsoft.SqlServer.ManagedDTS.dll)

Синтаксис

'Декларация
Public NotInheritable Class ConnectionManager _
    Inherits DtsObject _
    Implements IDTSObjectHost, IDTSPersist, IDTSName, IComponent,  _
    IDisposable, IDTSPropertiesProvider, IDTSPropertiesProviderEx, IDTSPackagePath, IDTSExecutionPath
'Применение
Dim instance As ConnectionManager
public sealed class ConnectionManager : DtsObject, 
    IDTSObjectHost, IDTSPersist, IDTSName, IComponent, IDisposable, 
    IDTSPropertiesProvider, IDTSPropertiesProviderEx, IDTSPackagePath, IDTSExecutionPath
public ref class ConnectionManager sealed : public DtsObject, 
    IDTSObjectHost, IDTSPersist, IDTSName, IComponent, IDisposable, 
    IDTSPropertiesProvider, IDTSPropertiesProviderEx, IDTSPackagePath, IDTSExecutionPath
[<SealedAttribute>]
type ConnectionManager =  
    class 
        inherit DtsObject 
        interface IDTSObjectHost 
        interface IDTSPersist 
        interface IDTSName 
        interface IComponent 
        interface IDisposable 
        interface IDTSPropertiesProvider 
        interface IDTSPropertiesProviderEx 
        interface IDTSPackagePath 
        interface IDTSExecutionPath 
    end
public final class ConnectionManager extends DtsObject implements IDTSObjectHost, IDTSPersist, IDTSName, IComponent, IDisposable, IDTSPropertiesProvider, IDTSPropertiesProviderEx, IDTSPackagePath, IDTSExecutionPath

Тип ConnectionManager обеспечивает доступ к следующим элементам.

Свойства

  Имя Описание
Открытое свойство ConnectionString Gets or sets the connection string used to establish a connection to a data source.
Открытое свойство CreationName Returns the string that is used by the runtime to create an instance of the ConnectionManager object and to add the object to the Connections collection. This property is read-only.
Открытое свойство DelayValidation Gets or sets a Boolean that indicates whether package validation is delayed until the package runs.
Открытое свойство Description Gets or sets the description of the ConnectionManager object.
Открытое свойство HasExpressions Gets a value that indicates whether the connection manager has properties set through expressions.
Открытое свойство HostType Gets an enumeration that describes the type of host that the connection is being used by. This property is read-only.
Открытое свойство ID Gets the ID of the ConnectionManager. This property is read-only.
Открытое свойство InnerObject Returns the specific connection type that was created. This property is read-only.
Открытое свойство Name Gets or sets the name of the ConnectionManager object.
Открытое свойство OfflineMode Gets or sets a value that indicates whether the connection manager is in offline mode.
Открытое свойство Properties Gets a collection of property objects for the ConnectionManager. This is the method of accessing the properties of the specific connection that is being hosted by the connection manager. This property is read-only.
Открытое свойство ProtectionLevel Gets or sets the level of encryption performed on sensitive data that is contained in the package.
Открытое свойство Qualifier Gets or sets the qualifier for the connection manager.
Открытое свойство Scope Gets the scope of the connection manager.
Открытое свойство Site Инфраструктура. Gets or sets the site of the connection manager.
Открытое свойство SupportsDTCTransactions Returns a Boolean that indicates if the connection supports Microsoft Distributed Transaction Coordinator (MS DTC) transactions.
Открытое свойство VariableDispenser Gets the dispenser of the variables in the connection manager.
Открытое свойство Variables Gets the collection of variables in the connection manager.

В начало

Методы

  Имя Описание
Открытый метод AcquireConnection Creates an instance of the connection type.
Открытый метод Dispose Releases the resources used by the ConnectionManager.
Открытый метод Equals Determines whether two object instances are equal. (Производный от DtsObject.)
Открытый метод GetExecutionPath Returns the execution path of the connection manager.
Открытый метод GetExpression Returns a String that contains the expression for the specified property. Null means that no expression has been assigned.
Открытый метод GetHashCode Returns the hash code for this instance. (Производный от DtsObject.)
Открытый метод GetPackagePath Gets or sets the path of the package that the connection applies to.
Открытый метод GetType (Производный от Object.)
Открытый метод LoadFromXML(String, IDTSEvents) This method is not callable by your application code. To load a package that has been saved as .xml, use the Application.LoadPackage method.
Открытый метод LoadFromXML(XmlNode, IDTSEvents) This method is not callable by your application code. To load a package that has been saved as .xml, use the Application.LoadPackage method.
Открытый метод ReleaseConnection Frees the connection established during AcquireConnection. Called at design time and runtime.
Открытый метод SaveToXML This method is not callable by your application code. To save a package as .xml, use the Application.SaveToXml method.
Открытый метод SetExpression Assigns the specified expression to the property. Specify nullпустая ссылка (Nothing в Visual Basic) to remove an existing expression from the property.
Открытый метод SetQualifier Changes a qualifier on the connection manager after the connection manager has been created but before it is used in a running package.
Открытый метод ToString (Производный от Object.)

В начало

События

  Имя Описание
Открытое событие Disposed Adds an event handler to listen to the Disposed event on the ConnectionManager.

В начало

Замечания

A connection manager is a logical representation of a connection. At design time, in the graphical user interface, you use a connection manager to describe the physical connection that the runtime creates when the package runs. Службы Integration Services provides different types of connection managers that enable packages to connect to a variety of data sources. For example, there is an ActiveX Data Objects (ADO) connection manager, an ADO.NET connection manager, an ODBC connection manager, and so on. For more information, see Расширение пакетов с помощью пользовательских объектов.

Безопасность многопоточности

Любые открытые статический (Shared в Visual Basic) элементы этого типа потокобезопасны. Потокобезопасность с элементами экземпляров не гарантируется.

См. также

Справочник

Пространство имен Microsoft.SqlServer.Dts.Runtime