Galhano //127.0.0.1

Quando ocorre um erro numa pagina. o ASP.NET envia informação sobre o erro para o cliente. Os erros são divididos em 4 categorias: Configuration errors: Occur when the syntax or structure of a Web.config file in the configuration hierarchy is incorrect. Parser errors: Occur when the ASP.NET syntax on a page is malformed. Compilation errors: Occur when statements in a page’s target language are incorrrect. Run-time errors: Occur during a page’s execution, even though the errors could not be detected at compile time. By default, the information shown for a run-time error is the call stack (the chains of procedure …

Por padrão, todos os directório são herdados de um arquivo de configuração padrão de sistema chamado de machine.config, (localizado em: “WinNT\Microsoft.NET\Framework\Versão\CONFIG“).

O arquivo Global.asax opera de maneira semelhante as páginas *.aspx. Você utiliza o Global.asax para sincronizar qualquer evento exposto pela classe HttpApplication. Eventos quais veremos abaixo: Evento Descrição AcquireRequestState Accionado quando o Aplicativo obtém o cache para a solicitação. AuthenticateRequest Accionado quando o Aplicativo tenta autenticar a solicitação de HTTP. AuthorizeRequest Accionado quando o Aplicativo tenta autorizar a solicitação de HTTP. BeginRequest Accionado quando a solicitação de HTTP é iniciada. EndRequest Acionado quando a solicitação de HTTP é concluída. Error Acionado quando surge um erro. PostRequestHandlerExecute Accionado imediatamente depois do handler de HTTP processar a solicitação. PreRequestHandlerExecute Accionado imediatamente antes …

In-line code is code that is embedded directly within the ASP.NET page. Code-behind refers to code for your ASP.NET page that is contained within a separate class file. This allows a clean separation of your HTML from your presentation logic. When we use Microsoft Visual Studio .NET to create ASP.NET Web Forms, code-behind pages are the default method. In addition, Visual Studio .NET automatically performs precompilation for us when we build our solution. A little bit of background Directives in ASP.NET control the settings and properties of page and user control compilers. They can be included anywhere on a page, …

ASP.NET 2.0 introduces a new concept known as Master Pages, in which you create a common base master file that provides a consistent layout for multiple pages in your application. To create a Master Page, you identify common appearance and behavior factors for the pages in your application, and move those to a master page. In the master page, you add placeholders called ContentPlaceHolders where the content (child) pages will insert their custom content. When users request the content pages, ASP.NET merges the output of the content pages with the output of the master page, resulting in a page that …