'ASP.net Core API : ValidationVisitor exceeded the maximum configured validation depth '32'

AS am running an ASP.Net core web API from docker container , it throws a validation error :

System.InvalidOperationException: ValidationVisitor exceeded the maximum configured validation depth '32' when validating type 'ClassName'. This may indicate a very deep or infinitely recursive object graph. Consider modifying 'MvcOptions.MaxValidationDepth' or suppressing validation on the model type.

The only place I could find a discussion about this issue is in here , where it seems that a fix has been provided on the latest version of ASP.net core . I updated my .net core version to the latest , but still facing the same issue.
Here is the code of the class where the validation is causing the issue :

        [Required]
        [Range(1, long.MaxValue)]
        public long Id { get; set; }
        [Required(AllowEmptyStrings = false)]
        [StringLength(1000)]
        public string Name { get; set; }
        [Required(AllowEmptyStrings = false)]
        [StringLength(200)]
        public string Category { get; set; }
        [Required(AllowEmptyStrings = false)]
        [StringLength(13)]
        public string Division { get; set; }

Important : Am the only one facing the issue , as the rest of my team is running the project successfully , any help is highly appreciated.

c++sharpasp.net-core


Solution 1:[1]

Increasing MaxModelValidationErrors didn't fix things for me, I had to change a different value (MaxValidationDepth) to get things to work. Wanted to add it here in case anyone had the same problem as I did.

.AddMvcOptions(options =>
        {
            options.MaxValidationDepth = 999;
        });

Solution 2:[2]

You could increase MaxModelValidationErrors in Startup.ConfigureServices:

services.AddControllers(options =>
{
    options.MaxModelValidationErrors = 999999;
});

Solution 3:[3]

I am in the process of upgrading a project to .NET 6 and ran into this error message. The above solutions did not fix it. The validation error was referring to a virtual Subproperty and a validated something that I did not even want to be validated at this point.

This fixed it for me:

services.AddMvc(option => {
    //fix: max validation depth error in TryValidateModel(model) since .NET6
    option.ModelMetadataDetailsProviders.Add(new SuppressChildValidationMetadataProvider(typeof(MyVirtualSubpropertyClassThatShouldNotBeValidated)));
});

Disclaimer: I am well aware that this is a quickfix and potentially has sideeffects. Also I cannot spend a week on properly fixing it and just want a working version for now.

Solution 4:[4]

I cannot recommend SuppressChildValidationMetadataProvider anymore.

But you can use this attribute:

using Microsoft.AspNetCore.Mvc.ModelBinding.Validation;
[ValidateNever]
public List<ToNotValidateSet> ToNotValidateSet { get; set; }

...on all the virtual properties that should not get validated.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Christopher Rice
Solution 2 Constantine Nikolsky
Solution 3 CodingYourLife
Solution 4 CodingYourLife

Related Questions