asp.net-mvc-3

问题 Very simple question: Are controllers in ASP.NET created for every HTTP request, or are they created at application startup and reused throughout requests? Will the controller be created only for a particular HTTP request? If my previous assumptions are correct, can I depend on it? I want to create database context (Entity Framework) that will live only for one request. If I create it as a property initialized in controller's constructor, is it granted that new instance of context will be

问题 I am building an application in MVC3 and when a user comes into my site I want to know that user's timezone. I want to know how to do this in c# not in javaScript? 回答1: As has been mentioned, you need your client to tell your ASP.Net server details about which timezone they're in. Here's an example. I have an Angular controller, which loads a list of records from my SQL Server database in JSON format. The problem is, the DateTime values in these records are in the UTC timezone, and I want to

问题 I have a jquery function to check valid data on UsernameTextbox in my View. I want to prevent User click on the Register button until this field valid. Disable button is it the best method? I just want when the value is not valid, user click on button just focus to the UsernameTextbox filed? Update Code: Here is my Model : [Required] [Remote("CheckUsername", "Account", ErrorMessage = "Username already exits.")] public string Username { get; set; } and Controller with GET method: [HttpGet]

问题 This is really weird, for some reason the Id of the ViewModel is being rendered as null inside the view. I debugged the application and checked that the view model is actually being mapped correctly (using AutoMapper) and everything is fine. But when I do @Model.Id, it is rendering as zero, and when I alert the value using jQuery I get "null". So what's going on? <div id="commentBox"> @using (Html.BeginForm("Comment", "Item", new { itemId = Model.Id } )) { <span class="greenText">answer</span

问题 I use Valums qq.FileUploader(ex-AjaxUpload) plugin for uploading in my Asp.net mvc 3 application... I have some button in my page add-newimage , and by clicking in it I get modal window, and I load data into that window by loading Partial View. And in that partial view I have button upload-image , in which I want to initilaize my qq.FileUploader, but it doesn't work anywhere... Here is code $("#add-newimage").click(function () { $("#add-image").load('/Design/AddImage/', function () { $("#add

问题 I am trying to use the change event of a dropdown to call an ActionResult in my controller in order to populate another dropdown. Here is the jQuery that I've tried: $(function () { $('#CertificationId').change(function () { var data = { certificationId: $('#CertificationId').val() }; var certificationId = $('#CertificationId').val(); // $.post('@Url.Action("AjaxGetCourseOptions", "WorkerCertifications")', {certificationId : certificationId}, $(this).parents('form:first').serialize(),

问题 I couldn't find anything useful to this problem and I never used authentication in a web application before. So anything with / without cookies is new for me. We've got an existing (non-web-)program using SQL Server accounts for authentication. Now, I want to do the same with my MVC3 project. Every user has the same rights inside the database. The (non-web-)program handles the rights itself. After logging in successful (with an SQL account), the login name is mapped to an entity in the

问题 How can I pass model to jquery ajax my code id '@Model' is the model on the view.i need to pass this model to controller which accept argument of type login model. $('#reject1').click( function() { var model=@Model; $.ajax({ cache:true, type: "POST", url: "@(Url.Action("Login", "Customer"))", data:'model='+model, success: function() { //Some logic }, complete : function() {} }); return false; }); Above code doesn't work 回答1: For corrected post data you should serialize model data: $('#FormId'

问题 I'm working on a widgetmanager for asp.net mvc and to get the main part to work, I need to load in a view from outside the default views folder. I got the following folder structure: ... - Views - Widgets |- Views I need the views to be loaded from inside ~/Widgets/Views I'm not sure if I should be writing a Viewengine from scratch or do something else so please feel free to answer :) p.S. The widgetmanager is called S3WidgetManager and can be found on GitHub 回答1: You could write a custom

问题 i have following settings in web.config <authentication mode="Forms"> <forms loginUrl="~/Account/login" slidingExpiration="true" timeout="2880" protection="All" /> </authentication> but the cookie expires in less than five minutes of inactivity. Any clue on what is happening? 回答1: I recognize this behavior from a web host where I run one of my sites. It all started when moving to new servers, prepared for dotNET 4. The web.config is completely ignored and, as you mention, five minutes seems