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Questions tagged [modelbinders]

263 questions
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ASP.NET MVC: null reference exception using HtmlHelper.TextBox and custom model binder

I have written a class which implements IModelBinder (see below). This class handles a form which has 3 inputs each representing parts of a date value (day, month, year). I have also written a corresponding HtmlHelper extension method to print out…
WickyNilliams
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MVC 2, Custom ModelBinder, and storing the "attempted value" for the view

I have an object that was previously round-tripping from the server to the client and back nicely (i.e. edit and view forms worked fine). However, I've added to that object a complex type and made a custom ModelBinder to handle it. The complex…
pbristow
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ASP.NET MVC - Binding a Child Entity to the Model

This one seems painfully obvious to me, but for some reason I can't get it working the way I want it to. Perhaps it isn't possible the way I am doing it, but that seems unlikely. This question may be somewhat related: ASP.NET MVC Model Binding…
Nathan Taylor
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breaking datetime into constituent parts ASP.NET MVC form

i have searched the web relentlessly for this and have not found anything - which is surprising because i would think it is such a common scenario! Basically, on my model i have a DateTime field which i wish the user to populate through a form. I am…
WickyNilliams
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ASP.Net MVC2 CustomModelBinder not working... Changed from MVC1

(My apologies if this seems verbose - trying to provide all relevant code) I've just upgraded to VS2010, and am now having trouble trying to get a new CustomModelBinder working. In MVC1 I would have written something like public class…
Ian
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ModelBinding Issue with a Struct

I have a ViewModel which contains the following struct: public struct PricesAndDiscounts { public decimal FlatOff; public decimal UnitPrice; public decimal TotalDiscount; public decimal TotalOptions; public decimal…
onefootswill
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NullReferenceException when testing DefaultModelBinder

I'm developing a project using BDD/TDD techniques and I'm trying my best to stay the course. A problem I just ran into is unit testing the DefaultModelBinder. I'm using mspec to write my tests. I have a class like this that I want to bind…
Byron Sommardahl
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ASP.MVC 4 DefaultModelBinder fails on empty string binding to List

So if you post empty string to a controller like this and try to bind it to a List very strange stuff occurs Does anybody faced this issue? Why it adds default int value to a list?
Grebets Kostyantyn
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Two field with same name in Custom model binder

I write a custom model binder. In my page I have a numeric text box that has comma separetor mask. For examle: 1,234 In my model binder, I get value in text box: var valueResult =…
Tavousi
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How to update custom ModelBinder to work with altered ModelBindingContext.ValueProvider interface in ASP.NET MVC RC2

I have a custom model binder that takes a comma separated list and cleans out any empty values, then passes it along to the default model binder. This worked in ASP.NET MVC Preview 2, but when I upgraded to RC2, the below won't compile because the…
JeremyWeir
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Binding ViewModels With Other ViewModelBinders

I have a viewmodel (lets call it HouseVM) but it contains another viewmodel inside of it (KitchenVM). I've already created a custom model binder for KitchenVM. Now I'm creating the HouseVM modelbinder. How can I access the model binding I've…
RailRhoad
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Remote Validation attribute in base Model

I have abstract model which has property that will be validated. I want to set current controller for controller parameter.So,I added my custom attribute which inherits from Remote attribute. The problem is validate attribute applies once when model…
AndreyDG
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MVC Views and Controllers: Re-instantiate entities when form submitted

We are working with entities in our MVC controllers which are passed to strongly typed views. How do we re-instantiate these entities in the controller with updated data when the form is posted in the view? The form does not contain all the fields…
Steve Ward
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Overriding updatecollection in defaultmodelbinder

I'm having a problem with the DefaultModelBinder creating new entities when I bind a entity with child collection rather than updating the existing child entities. I found what looks like a good solution in this post but I don't want to have to…
Joe
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I need a DataAnnotationsModelBinder for DataAnnotations v 3.5

I need a DataAnnotationsModelBinder that is going to work with System.ComponentModel.DataAnnotations v 3.5 i have found one on codeplex, but is for the v 0.99 of DataAnnotations and it doesn't work with v 3.5, and my xVal doesn't work with…
Omu
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