从方法C＃进行事件调用

Question

我想从SendNotification方法中的this.Job.JobCompleted调用Job_JobCompleted事件。 但是this.job向我显示了null，因此我无法调用它。 请帮助我或以任何方式调用Job_JobCompleted事件。 谢谢

public override void SendNotification(string content)
{
    this.Job.JobCompleted += Job_JobCompleted;
}

void Job_JobCompleted(object sender, JobCompletionData e)
{

    //List<string> crawledUrls = new List<string>();  // List of  included URLS in c#
    //crawledUrls.Add("http://www.friferie.dk/inspiration/India");
    //crawledUrls.Add("http://www.friferie.dk/inspiration/UK");
    //crawledUrls.Add("http://www.friferie.dk/inspiration/Spain");
    //crawledUrls.Add("http://www.friferie.dk/inspiration/Nigeria");
    //crawledUrls.Add("http://www.friferie.dk/inspiration/Uganda");

    string comment = @"sitemap-generator-url=http://www.auditmypc.com/free-sitemap-generator.asp" + Environment.NewLine + Environment.NewLine +
                                "This sitemap was created using the free tool found here: http://www.auditmypc.com/free-sitemap-generator.asp" + Environment.NewLine + Environment.NewLine +
                                "Audit My PC also offers free security tools to help keep you safe during internet travels";
    XNamespace xsi = "http://www.w3.org/2001/XMLSchema-instance";

    XElement root = new XElement("urlset",
                        new XAttribute(XNamespace.Xmlns + "xsd", "http://www.w3.org/2001/XMLSchema"),
                        new XAttribute(XNamespace.Xmlns + "xsi", xsi.NamespaceName),
                        new XComment(comment));

    List<XElement> ChildNodes = new List<XElement>();

    foreach (string url in e.CrawledUrls)
    {
        ChildNodes.Add(CreateXMLNode(url));
    }

    root.Add(ChildNodes);
    root.Save("d:/product.xml");
}

public static XElement CreateXMLNode(string url)
{
    XElement urlnode = new XElement("url");
    urlnode.Add(new XElement("loc", url));
    return urlnode;
}

Answer 1

传递此事件Job_JobCompleted（object sender，JobCompletionData e）所需的参数，在sender中传递引发该事件的按钮名称，并在e中传递新的EventArgs，应类似于Job_JobCompleted（btn，new EventArgs（））

Answer 2

与代码

this.Job.JobCompleted += Job_JobCompleted;

您只需挂接事件。 您没有调用该事件。 重新编写代码并将“连接”放置在其他位置（通常是在创建作业的时候）

public void StartupJob()
{
    this.Job = new Job(#params); //create the object
    this.Job.JobCompleted += Job_JobCompleted; //hookup the event
    this.Job.Run(); //do some work
}

public override void SendNotification(string content)
{
    //Invoke your event (always see if it is hooked up)
    if(Job.JobCompleted != null)
        Job.JobCompleted(this, new JobCompletionData(content));
}

我不知道你的JobCompletionData是什么样子，但它可能有一个构造函数...