Acan's Weblog

An action result is the standard result from an action.  Action results handle the execution of the result requested by an action method.  Although standard action results FileContentResult and FileStreamResult may be used for downloading files that are generated on the fly, creating a custom action result might be the best solution. For situations that are not supported by  standard action results, we may create custom action results. For example w e may create custom  action result for creating PDF, Excel or Word files on the fly for download or generating and returning images.  Creating a new custom action result requires that our class inherit the abstract class  System.Web.Mvc. ActionResult and override the  ExecuteResult method. As an example let's create a custom action result for exporting data to Excel files on the fly for download. We are using FastMember package for creating DataTable from IEnumerable object and ClosedXML package ...

We may use action filters for authorization in an ASP.NET MVC application. An action filter is an attribute that we can apply to a controller action or an entire controller. The ASP.NET MVC framework includes several action filters including OutputCache, HandleError, and Authorize. Authorize action filter enables us to restrict access to a particular user or role. Authorization filters implements the IAuthorizationFilter attribute. Authorization filters are used to implement authentication and authorization for controller actions. The ASP.NET MVC framework includes a base ActionFilterAttribute class. This class implements both the IActionFilter and IResultFilter interfaces and inherits from the Filter class. The base ActionFilterAttribute class has the following methods that to override: OnActionExecuting – called before a controller action is executed. OnActionExecuted – called after a controller action is executed. OnResultExecuting – called before a cont...

Electron is a framework for creating native applications with web technologies including JavaScript, HTML, and CSS. Electron enables create desktop applications with pure JavaScript by providing a runtime with rich native (operating system) APIs. It allows for the development of desktop GUI applications using Node.js runtime for the backend and Chromium for the frontend component. As a sample platform independent desktop application, I created the JPwdManager, a simple platform independent password manager application. An Electron application is essentially a Node.js application. The starting point is a package.json that is identical to that of a Node.js module. The script specified by the main field is the startup script of your app, which will run the main process. Our package.json file is as follows: {   "name": "jpwdmanager",   "version": "1.0.1",   "description": "platform independent simple password manager app...

The efficient way of filtering select list box items may be achieved using JQuery $(function(){     $('#filterInput').keyup(function () {         doFilter(this);     }); }); /* filter method */ function doFilter(item) {     $(item).val($(item).val().toUpperCase());     var valFilter = $(item).val();     var valFilter2 = null;     if ($(item).val().length > 2)         valFilter2 = $(item).val();     $('#listItems>option').each(function () {         var text = $(this).text();         (text.indexOf(valFilter) == 0 || (valFilter2 != null && text.includes(valFilter2) == true)) ? $(this).show() : $(this).hide();     }); }