C# 服务引用中的额外参数

我使用以下代码作为服务参考：

var myService = new MyService.MyServiceClient();
myService.DeleteOCDFCompleted += MyServiceDeleteOCDFComplete;
myService.DeleteOCDF(OCDF.OcdfId);

void MyServiceDeleteOCDFComplete(object sender, MyService.DeleteOCDFCompletedEventArgs e)
{
//  OCDFList.Remote(**ocdf that deleted**);
  MessageBox.Show("Delete Completed successfully.");
}

我想从列表中删除已删除的对象，但如何在

MyServiceDeleteOCDFComplete

函数中确定已删除的参数

换句话说：如何向服务引用事件发送额外的参数

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提前感谢。

您可以使用

DeleteOCDF

方法的附加参数（称为

userState

）。该参数可以是任何对象，并将在其

UserState

属性中传递给事件处理程序

var myService = new MyService.MyServiceClient();
myService.DeleteOCDFCompleted += MyServiceDeleteOCDFComplete;
myService.DeleteOCDF(OCDF.OcdfId, OCDF.OcdfId);

void MyServiceDeleteOCDFComplete(object sender, MyService.DeleteOCDFCompletedEventArgs e)
{
    int ocdfId = (int)e.UserState;
    MessageBox.Show("Delete Completed successfully.");
}

---

您可以将附加参数用于

DeleteOCDF

方法（称为

userState

）。该参数可以是任何对象，并将在其

UserState

属性中传递给事件处理程序

var myService = new MyService.MyServiceClient();
myService.DeleteOCDFCompleted += MyServiceDeleteOCDFComplete;
myService.DeleteOCDF(OCDF.OcdfId, OCDF.OcdfId);

void MyServiceDeleteOCDFComplete(object sender, MyService.DeleteOCDFCompletedEventArgs e)
{
    int ocdfId = (int)e.UserState;
    MessageBox.Show("Delete Completed successfully.");
}