Task.InitializeTask Method (Connections, VariableDispenser, IDTSInfoEvents, IDTSLogging, EventInfos, LogEntryInfos, ObjectReferenceTracker)

 

Initializes the properties associated with the task. This method is called by the runtime and is not used in code.

Namespace:   Microsoft.SqlServer.Dts.Runtime
Assembly:  Microsoft.SqlServer.ManagedDTS (in Microsoft.SqlServer.ManagedDTS.dll)

Public Overridable Sub InitializeTask (
	connections As Connections,
	variableDispenser As VariableDispenser,
	events As IDTSInfoEvents,
	log As IDTSLogging,
	eventInfos As EventInfos,
	logEntryInfos As LogEntryInfos,
	refTracker As ObjectReferenceTracker
)

Parameters

connections
Type: Microsoft.SqlServer.Dts.Runtime.Connections

A collection of connections used by the task.

variableDispenser
Type: Microsoft.SqlServer.Dts.Runtime.VariableDispenser

A VariableDispenser object for locking variables.

events
Type: Microsoft.SqlServer.Dts.Runtime.IDTSInfoEvents

An object that implements the IDTSInfoEvents interface.

log
Type: Microsoft.SqlServer.Dts.Runtime.IDTSLogging

An object that implements the IDTSLogging interface.

eventInfos
Type: Microsoft.SqlServer.Dts.Runtime.EventInfos

A collection that contains events to be raised during execution of the task.

logEntryInfos
Type: Microsoft.SqlServer.Dts.Runtime.LogEntryInfos

A collection of log entries.

refTracker
Type: Microsoft.SqlServer.Dts.Runtime.ObjectReferenceTracker

An object reference tracker.

For stock tasks, this method is used to set the log events of each task.

The run-time engine calls InitializeTask immediately after the task is created—before validation, execution, or persistence operations.

Task developers define custom events by overriding the InitializeTask method of the Task base class, and creating a new EventInfo. The following code sample shows the InitializeTask method of a custom task, where two custom events are created, and added to the eventInfos collection.

Public Overrides Sub InitializeTask(ByVal connections As Connections,  ByVal variables As VariableDispenser, ByVal events As IDTSInfoEvents, ByVal log As IDTSLogging, ByVal eventInfos As EventInfos, ByVal logEntryInfos As LogEntryInfos, ByVal refTracker As ObjectReferenceTracker) 
    Me.eventInfos = eventInfos
    Dim paramNames(0) As String
    Dim paramTypes(0) As TypeCode = {TypeCode.Int32}
    Dim paramDescriptions(0) As String

    paramNames(0) = "InitialValue"
    paramDescriptions(0) = "The value before increment."

    Me.eventInfos.Add("OnBeforeIncrement", "Fires before the task increments the value.", True, paramNames, paramTypes, paramDescriptions)
    Me.onBeforeIncrement = Me.eventInfos("OnBeforeIncrement")

    paramDescriptions(0) = "The value after increment."
    Me.eventInfos.Add("OnAfterIncrement", "Fires after the initial value is updated.", True, paramNames, paramTypes, paramDescriptions)
    Me.onAfterIncrement = Me.eventInfos("OnAfterIncrement")
End Sub
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