asp.net-mvc-5

问题 My Inventory Tracking program has a main class called INV_Assets . This includes [ForeignKey] fields for several child tables including INV_Locations : [Required] public int Location_Id { get; set; } [ForeignKey("Location_Id")] public virtual INV_Locations Location { get; set; } Now then, on my Create()/Edit() action methods for INV_Assets I am filling a ViewData[] element with a SelectList to be used on the View (this Select List combines 2 of my INV_Locations fields into one within the

问题 I have these classes: Class Parent { [Required] String Name ; Child child ; } Class Child { [Required] Child FirstName ; [Required] Child LastName ; } I have a form showing the Parent entity fields including the Childs's. With my configuration the child's FistName and LastName are required and if left blank causes validation to fail. What I need is have validation pass if both the child's FirstName and LastName are submitted blank. If either FirstName or LastName is submitted then the other

问题 Imagine I have 2 database tables.. 1 table holds different sports: |ID| |Sport| 1 Baseball 2 Basketball 3 Soccer The second table holds the ID of the Sports table, so a foreign key Name of Table - TestDB |ID| |SportsID| |Test| 1 1 test1 2 3 test2 3 2 test3 4 1 test4 5 2 test5 Now I am using Predicate Builder to allow the user to search through the table in my web application: [HttpPost] public ActionResult allDailySummaries(int? sport, int? sport1) { List<TestDB> lstTDB = db.TDB.Include(x =>

问题 Database design question :) Is it smarter to make a lot of interconnected tables (normalize) or is it smarter to duplicate data so queries are simpler? Here is my situation: public class TransferRequest { [Key] public int TransferRequestId { get; set; } public int By { get; set; } public int? For { get; set; } public int PersonId { get; set; } public virtual Person Person { get; set; } [ForeignKey("Transfer")] public int? ExistingTransferId { get; set; } public virtual Transfer

问题 After publishing my asp.net MVC 5 website to the hosting environment, I got the following error message Compilation Error - The compiler failed with error code 1 Nothing else besides the compiler-call itself is shown. 回答1: In my case, the MVC-templates added the following section in the web.config file: <system.codedom> <compilers> <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers

问题 i am working on an application. i am using two partial view in a single view. one of them is a create form for shortcode and the other one lists the shortcodes having a pagination. this is my create form which is partial view @model UniProject.Models.Short_Code <div id="formDiv"> @using (Ajax.BeginForm("Create", "Service", new AjaxOptions { HttpMethod = "post" , UpdateTargetId = "formDiv" })) { <table> <tr> <td>@Html.LabelFor(model => model.ServiceCode)</td> <td>@Html.TextBoxFor(model =>

问题 The goal is to launch an MVC 5 web app on an IIS 8 within a Windows Server 2012 (Standard edition for evaluation from Microsoft) in a virtual machine (VMware Workstation 12 Player, free version) in order to test the whole system for the release. I managed to run the application, but the problem is, that it´s extremely slow. E.g. the index.html is a static HTML page and needs more than 60 seconds to load. But why? In Visual Studio and IIS Express still everything works perfectly. Futher

问题 This used to be a Web Forms application and I'm rewriting it in MVC. The connection name is stored in the user's details and depending on the user, I need to pass a different connection name. In WebForms this was solved by setting a Session variable in Global.asax and then every time the context is needed, I'd create the context in a using statement, passing the Session variable in the context constructor like this: using (IAccountContext db = new MainContext(Session["cn"]) { } In MVC I'm

问题 I have a dynamically populated list of questions and answers. Two problems: The questions and answers do not display after postback The selected answers are missing Viewmodel public class RegistrationViewModel : RegisterExternalLoginModel { //...etc... public Question Question { get; set; } public Answer Answer { get; set; } public List<Question> Questions { get; set; } public IList<Answer> PossibleAnswers { get; set; } public List<SelectedAnswer> SelectedAnswers { get; set; } public IList

问题 I have an asp.net MVC 5 website. I am using data annotations on the model for validation - eg [Required] public string FirstName { get; set; } However, if I want to do something a bit more complicated with validation, say require a date to be in the future - all examples I have seen just perform validation in the controller - eg: [HttpPost] public ActionResult Edit(MyViewModel vm) { // check date is in future if (vm.mydate < DateTime.Now()) ModelState.IsValid = false; if (ModelState.IsValid)