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InitializeTask 方法

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

命名空间：  Microsoft.SqlServer.Dts.Tasks.FtpTask
程序集：  Microsoft.SqlServer.FtpTask（在 Microsoft.SqlServer.FtpTask.dll 中）

语法

声明
Public Overrides Sub InitializeTask ( _
    connections As Connections, _
    variableDispenser As VariableDispenser, _
    events As IDTSInfoEvents, _
    log As IDTSLogging, _
    eventInfos As EventInfos, _
    logEntryInfos As LogEntryInfos, _
    refTracker As ObjectReferenceTracker _
)
用法
Dim instance As FtpTask
Dim connections As Connections
Dim variableDispenser As VariableDispenser
Dim events As IDTSInfoEvents
Dim log As IDTSLogging
Dim eventInfos As EventInfos
Dim logEntryInfos As LogEntryInfos
Dim refTracker As ObjectReferenceTracker

instance.InitializeTask(connections, _
    variableDispenser, events, log, eventInfos, _
    logEntryInfos, refTracker)

public override void InitializeTask(
    Connections connections,
    VariableDispenser variableDispenser,
    IDTSInfoEvents events,
    IDTSLogging log,
    EventInfos eventInfos,
    LogEntryInfos logEntryInfos,
    ObjectReferenceTracker refTracker
)

public:
virtual void InitializeTask(
    Connections^ connections, 
    VariableDispenser^ variableDispenser, 
    IDTSInfoEvents^ events, 
    IDTSLogging^ log, 
    EventInfos^ eventInfos, 
    LogEntryInfos^ logEntryInfos, 
    ObjectReferenceTracker^ refTracker
) override

abstract InitializeTask : 
        connections:Connections * 
        variableDispenser:VariableDispenser * 
        events:IDTSInfoEvents * 
        log:IDTSLogging * 
        eventInfos:EventInfos * 
        logEntryInfos:LogEntryInfos * 
        refTracker:ObjectReferenceTracker -> unit 
override InitializeTask : 
        connections:Connections * 
        variableDispenser:VariableDispenser * 
        events:IDTSInfoEvents * 
        log:IDTSLogging * 
        eventInfos:EventInfos * 
        logEntryInfos:LogEntryInfos * 
        refTracker:ObjectReferenceTracker -> unit 

public override function InitializeTask(
    connections : Connections, 
    variableDispenser : VariableDispenser, 
    events : IDTSInfoEvents, 
    log : IDTSLogging, 
    eventInfos : EventInfos, 
    logEntryInfos : LogEntryInfos, 
    refTracker : ObjectReferenceTracker
)

参数

注释

For the FtpTask and all other 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.

示例

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 override void InitializeTask(Connections connections, VariableDispenser variables, IDTSInfoEvents events, IDTSLogging log, EventInfos eventInfos, LogEntryInfos logEntryInfos, ObjectReferenceTracker refTracker)
{
    this.eventInfos = eventInfos;
    string[] paramNames = new string[1];
    TypeCode[] paramTypes = new TypeCode[1]{TypeCode.Int32};
    string[] paramDescriptions = new string[1];

    paramNames[0] = "InitialValue";
    paramDescriptions[0] = "The value before increment.";

    this.eventInfos.Add("OnBeforeIncrement","Fires before the task increments the value.",true,paramNames,paramTypes,paramDescriptions);
    this.onBeforeIncrement = this.eventInfos["OnBeforeIncrement"];

    paramDescriptions[0] = "The value after increment.";
    this.eventInfos.Add("OnAfterIncrement","Fires after the initial value is updated.",true,paramNames, paramTypes,paramDescriptions);
    this.onAfterIncrement = this.eventInfos["OnAfterIncrement"];
}