page-lifecycle

问题 I'm working on an ASP.NET project in which the vast majority of the forms are generated dynamically at run time (form definitions are stored in a DB for customizability). Therefore, I have to dynamically create and add my controls to the Page every time OnLoad fires, regardless of IsPostBack. This has been working just fine and .NET takes care of managing ViewState for these controls. protected override void OnLoad(EventArgs e) { base.OnLoad(e); RenderDynamicControls() } private void

问题 I have a master page with a logout link on it. When the user clicks the link I call the following method: private void Logout() { SessionBll.DeleteSessionEntry(this.sessionId); FormsAuthentication.SignOut(); Roles.DeleteCookie(); LogHelper.Location = string.Empty; LogHelper.Info(logger, HttpContext.Current.User.Identity.Name, MethodBase.GetCurrentMethod().Name, "User has been logged out from Administrator.Master", LogMessage.LoggedOut); FormsAuthentication.RedirectToLoginPage(); } Now, when a

问题 I googled this about 1/2 a hour no hit's. Scenario is that, dynamic scripts are saved in string builder whose "string" representation is stored in session. It just happens that when user navigates away from one page to another the script[from session] gets registered using "RegisterStartupScript" . The script is registered in PreRender event of the Page. So i would like to clear this script in session while the page navigates away btw rule out a option to create another session variable and

问题 I've been learning Django for some time now, and I found this image helpful: I'm now delving into Angular JS, and I'm trying to figure out how each of the components (Directives, Controllers and Services ?) interacts and if there is a similar 'cycle'. This blog looks like it comes close to answering my question. But how is the picture different if we have a Django-Rest-Framework end point providing the books in the above example? Do we want URL resolution from Django, or Angular? Or more

问题 I am trying to understand different events in a Asp.net page life cycle. I came across to this link. It has two stages Load view state and Load postback data. I used to thought that these both means the same thing. But this article says, that postback data is not viewstate data. I don't understand this. If anyone can have a look. 回答1: ViewState data is data that ASP.NET encoded end sent to the client in the _ViewState hidden field. It's basically the page as it was when it was sent to the

问题 I am pretty sure back in the days of ASP.NET 1.0/1.1, controls created during runtime needs to be added before Page_Load event of the Page Lifecycle (i.e. inside Page_Init ). Here's one article by Microsoft on it (for .NET 1.0/1.1): HOW TO: Dynamically Create Controls in ASP.NET: Note When you create dynamic controls on a Web Form, you must create the controls and add them to the controls collection in either the Page_Init event handler or the Page_Load event handler. Otherwise, the controls

问题 I keep on hearing this words "Viewstate Chunking". What is Viewstate Chunking? And how it is working for ASP.NET pages? 回答1: When the ViewState in your page becomes very large it can be a problem since some firewalls and proxies will prevent access to pages containing huge ViewState sizes. For this purpose ASP.NET introduces the ViewState Chunking mechanism. So ASP.NET enables splitting of the ViewState's single hidden field into several using the MaxPageStateFieldLength property in the web

问题 I keep on hearing this words "Viewstate Chunking". What is Viewstate Chunking? And how it is working for ASP.NET pages? 回答1: When the ViewState in your page becomes very large it can be a problem since some firewalls and proxies will prevent access to pages containing huge ViewState sizes. For this purpose ASP.NET introduces the ViewState Chunking mechanism. So ASP.NET enables splitting of the ViewState's single hidden field into several using the MaxPageStateFieldLength property in the web

问题 Consider the scenario: I visited a page of a website built using ASP.NET. The page is a simple aspx page containing ASP.NET server controls. I clicked on a link which takes me to some other page on the same website. I clicked the BACK button of the browser. QUESTION : What happens in terms of page life cycle? Does all the events occur or the browser just displays the cached version of the page without making any requests? 回答1: I think the best answer is: It depends on the browser, especially

问题 I just developed my first xamarin.forms app. I am excited about xamarin.forms, but I miss several events. Are there any page-lifecycle-events in a xamarin.forms ContentPage? I know of these two: protected override void OnAppearing() { } protected override void OnDisappearing() { } But the OnAppearing() event only fires once. On Android, when I push the start button and go back to my app, this event does not fire again. Is there a workaround for this (like OnNavigatedTo in WindowsPhone-pages)?