DataConnection Members
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Supports a connection to a data source.
The DataConnection type exposes the following members.
Constructors
Name
Description
.gif "Protected method")
Class constructor. Instantiates a new instance of the DataConnection class.
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Methods
Name
Description
.gif "Public method")
Creates a cloned instance of this data connection, which retains the same connection properties and state as the original.
Closes the current data connection.
Overloaded.
Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Retrieves a Boolean value indicating whether or not information about the current connection is equivalent, in a design time sense, to the specified connection information.
Finalizes the connection. (Overrides Object.Finalize().)
Retrieves a proxy instance that allows the caller exclusive access to the data connection.
Serves as a hash function for a particular type. (Inherited from Object.)
Overloaded.
Overloaded.
Overloaded.
Gets the type of the current instance. (Inherited from Object.)
Creates a shallow copy of the current Object. (Inherited from Object.)
Handler for the MessageReceived event.
Handler for the StateChanged event.
Opens this data connection.
Releases an existing exclusive access proxy, as provided with a call to the GetExclusiveAccessProxy method.
Returns a string that represents the current object. (Inherited from Object.)
Unlocks a DDEX Provider object that has been locked using a call to the GetLockedProviderObjectmethod.
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Properties
Name
Description
.gif "Public property")
Retrieves an object that can perform asynchronous derivation and execution of commands on the data source.
Retrieves an object that can perform derivation and execution of commands on the data source.
Retrieves the underlying data provider connection support object that is being used to support the current data connection instance.
Retrieves or sets the amount of time, in seconds, before a command to open a connection times out.
Retrieves or sets unencrypted connection information in the form of a DDEX-provider-specific string.
Retrieves or sets encrypted connection information in the form of a DPAPI-encrypted, provider-specific string.
Retrieves a Boolean value indicating whether the current connection is locked by a client for exclusive access.
Retrieves an object that provides a set of events raised when data objects on the data source are added, changed, or removed.
Retrieves an object that can convert data object identifiers from formatted strings to unformatted parts and vice versa.
Retrieves an object that can resolve data object identifiers through both expansion and contraction.
Retrieves an object that can compare identifier parts and properties on data objects.
Retrieves an object that provides an XML stream defining the various DDEX data object types supported by the current data connection.
Retrieves the unique identifier of the DDEX Provider for the current data connection.
Retrieves a Boolean value indicating whether the underlying DDEX Provider object is locked for use by a client.
.gif "Protected property")
Retrieves a list of service types used to convert the unmanaged QueryService method call, in which a service GUID is specified, into a managed IServiceProvider.GetService method call, in which a managed type is specified. (Inherited from ServiceProvider.)
Retrieves the globally unique identifier (GUID) of the data source for the current data connection, if any.
Retrieves an object that provides a set of well known name/value pairs describing the characteristics of the data source.
Retrieves an object that allows you to compare data-source-specific version numbers.
Retrieves the current state of this data connection.
Retrieves an object that enables transaction processing; that is, allows you to begin, commit, and rollback transactions on the data source.
Retrieves an object that provides an XML stream defining the various data views supported by the current data connection.
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Events
Name
Description
.gif "Public event")
Event that is raised when a message is received from the data source.
Event that is raised when the state of the data connection has changed.
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Explicit Interface Implementations
Name
Description
.gif "Explicit interface implemetation")
.gif "Private method")
Creates a new connection object instance that is a copy of the current instance.
Performs as a factory for services that are exposed through an implementation of IServiceProvider. (Inherited from ServiceProvider.)
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