events

问题 Has anyone integrated with success logback and the MS Windows built-in event logger? How can it be done? It seems to me this is an important topic but I couldn't find any useful information regarding it... 回答1: I've blogged about my implementation of logback-ntlogger: http://ykchee.blogspot.com/2012/09/logback-nt-event-log-appender.html 回答2: It doesn't seem to exist: switch from log4j to logback However, as is noted in that link, you can just port Log4J's NTEventLogAppender and reuse the dll

问题 I have a dataframe of items with a certain number of different events which occur at different times. e.g. say I had a times of events (goal, corner, red card etc...) in various games of football. I want to count the number of each events which occurred before a certain time for each team in each game (where the time is different for each game). So I could have a dataframe of events (where C is corner, G is goal and R is red card) as follows: events <- data.frame( game_id = c(1, 1, 1, 1, 1, 1

问题 I have a dataframe of items with a certain number of different events which occur at different times. e.g. say I had a times of events (goal, corner, red card etc...) in various games of football. I want to count the number of each events which occurred before a certain time for each team in each game (where the time is different for each game). So I could have a dataframe of events (where C is corner, G is goal and R is red card) as follows: events <- data.frame( game_id = c(1, 1, 1, 1, 1, 1

问题 How can I add a server event for an HTML Select control? HTML code is like this: <div class="ui-widget"> <select id="Select1" runat="server"> <option>Select one...</option> <option>ActionScript</option> <option>AppleScript</option> <option>Asp</option> <option>BASIC</option> </select> </div> C# code is like this: public void Select1_SomethingChange(object sender, EventArgs e) { //random code } Now I know just as is it won't work, the 2nd line of the HTML needs an attribute of some kind.. I

问题 How can I add a server event for an HTML Select control? HTML code is like this: <div class="ui-widget"> <select id="Select1" runat="server"> <option>Select one...</option> <option>ActionScript</option> <option>AppleScript</option> <option>Asp</option> <option>BASIC</option> </select> </div> C# code is like this: public void Select1_SomethingChange(object sender, EventArgs e) { //random code } Now I know just as is it won't work, the 2nd line of the HTML needs an attribute of some kind.. I

问题 I'm trying to upload image or video in Angular. I wanted to display its preview. I have no problem in previewing the image, my problem is how can i preview the video? Please see this stackblitz link: CLICK HERE CODE onSelectFile(event) { if (event.target.files && event.target.files[0]) { var reader = new FileReader(); reader.readAsDataURL(event.target.files[0]); reader.onload = (event) => { this.url = event.target.result; } } } 回答1: You can decide if the file is type of video/image and then

问题 I have a WebView in my Android app, and I need to run a JavaScript function whenever the app/WebView is switched to (e.g. using the app switcher or tapping the icon from the home screen) the device wakes from sleep (with the app having still been on the screen when the device went to sleep). Using a visibilitychange event listener in my webpage javascript only works for case 1. Ideally I would like to trigger some kind of javascript event using the Android onResume() java function, but how?

问题 If a base class publishes a C# event and a derived class subscribes to it -- i.e. subscribes to itself --. Will the event subscription prevent the object from being garbage collected? Or is the garbage collector smart enough to detect such circular reference situations. At first glance, it seems like it should but I'm pretty sure I've seen control code that does this. This is such a fundamental question I can't believe I've never looked into it before. Edit: For Juan R. I mean something like

问题 If a base class publishes a C# event and a derived class subscribes to it -- i.e. subscribes to itself --. Will the event subscription prevent the object from being garbage collected? Or is the garbage collector smart enough to detect such circular reference situations. At first glance, it seems like it should but I'm pretty sure I've seen control code that does this. This is such a fundamental question I can't believe I've never looked into it before. Edit: For Juan R. I mean something like

问题 Research tells me that raising an event from the constructor itself is not feasible as the object may not be fully initialised... so where can I fire an event from as soon as the constructor has fired? 回答1: One thing you can do is add a method to handle additional post ctor tasks: Friend Class FooBar Public Sub New ' your code here End Sub Public Sub Create ' do anything you want End Sub End Class Elsewhere: Friend WithEvents Foo As Foobar ' ... Foo = New FooBar ' Foo doesnt exist until ctor