How to suppress - SuppressModelStateInvalidFilter at action level, asp.net core webspi

Question

This is regarding asp.net core web api. How to suppress model state validation at action level. we have [apicontroller] attribute defined at controller level, we want to keep auto model state validation for all the actions except one action method. How we can ignore auto model state validation for a specific action method?

Answer 1

Hi, @d khetwal ,

You could implement FilterAttribute to remove ModelStateInvalidFilter.

[ApiController]  
public class PersonController  
{  
    [SuppressModelStateInvalidFilter]  
    public ActionResult<Person> Get() => new Person();  
}  
  
public class SuppressModelStateInvalidFilterAttribute : Attribute, IActionModelConvention  
{  
    public void Apply(ActionModel action)  
    {  
        for (var i = 0; i < action.Filters.Count; i++)  
        {  
            if (action.Filters[i] is ModelStateInvalidFilter)  
            {  
                action.Filters.RemoveAt(i);  
                break;  
            }  
        }  
    }  
}  

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Best Regards,
Michael Wang