4

如何将字符串参数传递给 EventHandler?

ViewController(A) 书面事件处理程序

    public event EventHandler ValueChanged; 

    void ResponseCompleted(object sender, CommonCode.ResponseEventArgs e){
        this.InvokeOnMainThread (delegate { 

        if (ValueChanged != null) {
        ValueChanged (this, new EventArgs (e.ResponseData));
// e.ResponseData is an String datatype.
         }
     });
    }

视图控制器(B)

relatedDataSource.ValueChanged += delegate {
 Get Response Data from ViewControllerA
}
4

1 回答 1

5

您可以使用通用事件处理程序。例如:

public event EventHandler<string> ValueChanged;

void ResponseCompleted(object sender, CommonCode.ResponseEventArgs e){
    this.InvokeOnMainThread (delegate { 

    var handler = ValueChanged;
    if (handler != null)
        handler(this, e.ResponseData);
    });
}

relatedDataSource.ValueChanged += (s, responseData) => {
    //Your data is in responseData variable
}
于 2014-08-18T09:03:47.777 回答