Classe 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.
Hiérarchie d'héritage
System.Object
Microsoft.SqlServer.Dts.Runtime.DtsObject
Microsoft.SqlServer.Dts.Runtime.ConnectionManager
Espace de noms : Microsoft.SqlServer.Dts.Runtime
Assembly : Microsoft.SqlServer.ManagedDTS (en Microsoft.SqlServer.ManagedDTS.dll)
Syntaxe
'Déclaration
Public NotInheritable Class ConnectionManager _
Inherits DtsObject _
Implements IDTSObjectHost, IDTSPersist, IDTSName, IComponent, _
IDisposable, IDTSPropertiesProvider, IDTSPropertiesProviderEx, IDTSPackagePath, IDTSExecutionPath
'Utilisation
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
Le type ConnectionManager expose les membres suivants.
Propriétés
Nom | Description | |
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ConnectionString | Gets or sets the connection string used to establish a connection to a data source. |
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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. |
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DelayValidation | Gets or sets a Boolean that indicates whether package validation is delayed until the package runs. |
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Description | Gets or sets the description of the ConnectionManager object. |
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HasExpressions | Gets a value that indicates whether the connection manager has properties set through expressions. |
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HostType | Gets an enumeration that describes the type of host that the connection is being used by. This property is read-only. |
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ID | Gets the ID of the ConnectionManager. This property is read-only. |
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InnerObject | Returns the specific connection type that was created. This property is read-only. |
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Name | Gets or sets the name of the ConnectionManager object. |
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OfflineMode | Gets or sets a value that indicates whether the connection manager is in offline mode. |
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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. |
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ProtectionLevel | Gets or sets the level of encryption performed on sensitive data that is contained in the package. |
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Qualifier | Gets or sets the qualifier for the connection manager. |
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Scope | Gets the scope of the connection manager. |
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Site | Infrastructure. Gets or sets the site of the connection manager. |
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SupportsDTCTransactions | Returns a Boolean that indicates if the connection supports Microsoft Distributed Transaction Coordinator (MS DTC) transactions. |
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VariableDispenser | Gets the dispenser of the variables in the connection manager. |
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Variables | Gets the collection of variables in the connection manager. |
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Méthodes
Nom | Description | |
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AcquireConnection | Creates an instance of the connection type. |
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Dispose | Releases the resources used by the ConnectionManager. |
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Equals | Determines whether two object instances are equal. (hérité de DtsObject.) |
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GetExecutionPath | Returns the execution path of the connection manager. |
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GetExpression | Returns a String that contains the expression for the specified property. Null means that no expression has been assigned. |
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GetHashCode | Returns the hash code for this instance. (hérité de DtsObject.) |
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GetPackagePath | Gets or sets the path of the package that the connection applies to. |
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GetType | (hérité de Object.) |
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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. |
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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. |
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ReleaseConnection | Frees the connection established during AcquireConnection. Called at design time and runtime. |
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SaveToXML | This method is not callable by your application code. To save a package as .xml, use the Application.SaveToXml method. |
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SetExpression | Assigns the specified expression to the property. Specify nullune référence Null (Nothing dans Visual Basic) to remove an existing expression from the property. |
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SetQualifier | Changes a qualifier on the connection manager after the connection manager has been created but before it is used in a running package. |
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ToString | (hérité de Object.) |
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Événements
Nom | Description | |
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Disposed | Adds an event handler to listen to the Disposed event on the ConnectionManager. |
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Notes
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. 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 Extension de packages avec des objets personnalisés.
Sécurité des threads
Tous les membres publics static (Shared dans Visual Basic) de ce type sont thread-safe. Tous les membres de l'instance ne sont pas garantis comme étant thread-safe.