The ModelState ( System.Web.MVC.ModelState ) is a component in the ASP.Net MVC Framework that manages the state of the Model through Views and Controller classes.
Questions tagged [modelstate]
497 questions
9
votes
2 answers
ModelState is always considered valid, regardless of null values in required fields
I've been looking around and I think my solution is just fine but somehow the ModelState.IsValid property is always true.
Consider the following code snippets:
[Route("address")]
[HttpPut]
[ResponseType(typeof(UserViewModel))]
public…
Jeroen Vannevel
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8
votes
1 answer
What is the difference between ModelError and ValidationResult?
In ASP.NET MVC there exists a ModelState class that contains ModelErrorCollection. And a ModelError represents an error the occurs during model binding.
I know that ValidationResult is returned from ValidationAttribute.IsValid Method, and validates…
Michael R
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7
votes
1 answer
How to set ModelState true from controller action
How to set ModelState = true; in asp.net MVC from controller action
as we know ModelState.IsValid is readOnly ie. holds getter only, So we can't force our modelState to true like thisModelState.Isvalid = true; //what we can't do
Now do tell me guys…
RollerCosta
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7
votes
1 answer
ASP.Net Core: How do you get the key of an invalid ModelState value?
II have an "Edit" page in my .Net 5./ASP.Net MVC app. If ModelState.IsValid is "false", I want to check the individual errors before rejecting the entire page.
PROBLEM: How do I get the "name" of an invalid item in the ModelState list?
For…
FoggyDay
- 11,962
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7
votes
2 answers
How to call ValidationAttributes manually? (DataAnnotations and ModelState)
We have a need within some of our logic to iterate through the properties of a model to auto-bind properties and want to extend the functionality to include the new dataannotations in C# 4.0.
At the moment, I basically iterate over each property…
Jamie
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7
votes
2 answers
How to set Modelstate error keys to camel case?
How do I set the modelstate keys to camel case in WEB Api .net framework.
I use JsonProperty attribute to set the property names to camel case.
Now I want the modelstate to be the same as the json (camel case) how do I achieve that?
Arin
- 632
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7
votes
5 answers
ASP.MVC 2 RTM + ModelState Error at Id property
I have this classes:
public class GroupMetadata
{
[HiddenInput(DisplayValue = false)]
public int Id { get; set; }
[Required]
public string Name { get; set; }
}
[MetadataType(typeof(GrupoMetadata))]
public partial class Group
{
…
Zote
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7
votes
1 answer
jQuery Validator.showErrors MVC ViewModel ModelState
Basically I'm having trouble showing modelstate errors returned from the controller (WebApi). Using MVC4,jQuery and knockout. Hopefully you can see what I am trying to achieve from the below - thanks in advance.
View:-
…
renz
- 165
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7
votes
3 answers
MVC 4. ModelState.IsValid always return true
I don't understand why ModelState.isValid give me in all the ways. I set something in the email returns true and I pùt empty field, it returns true too. My question ism, what do I have to do to return true when the field is empty and nothing whn I…
Dave
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7
votes
1 answer
Returning HttpPostedFileBase to view on validation error
When I attempt to upload images to my MVC controller action and there is a validation error, I have to click through each of the buttons and find all of my files again.
If I have a view that consists of
kevskree
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6
votes
1 answer
MVC 3 ModelState.IsValid with multiple ViewModels
Let's just say I have A ViewModel that is made up of 3 other ViewModels. One contains a list of items, the other contains an instance of a class with a [Required] attribute and then another list of other items.
If the user selects from one of the…
ewahner
- 1,149
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6
votes
1 answer
How to determine which ValidationAttribute returned a ModelError
I'm having an issue where I am trying to determine which ValidationAttribute returned a particular ModelError. I have an endpoint in my web api that takes a model such as;
public class MyClass
{
[Required]
[Range(0, 3)]
public int?…
Scanlam
- 61
- 4
6
votes
4 answers
How to replace the default ModelState error message in Asp.net MVC 2?
I need to replace the model state resource (to another language).
I've seen some answers to the question above, but unfortunately I could'nt make it work.
Any detailed answer or example would be appriciated.
Thank you.
Godfa
5
votes
2 answers
Returning a list of keys with ModelState errors
How can I return a list/array of all keys that have an error?
I have tried to do the below, but it says I can't have that sort of expression for some reason.
ModelState.ToList(item => item.Value.Errors.Count > 0)
Jon
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5
votes
1 answer
Check ModelState in action filter
Can I check ModelState.IsValid in my custom action filter in OnActionExecuting method?
Sergey Metlov
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