Trying to return a correct error message instead of the WebAPI default one {"Message":"The request is invalid.","ModelState" when Json deserialzation fails. I implemented my custom ActionFilterAttribute: internal class ValidateModelAttribute : ActionFilterAttribute { public override void OnActionExecuting(HttpActionContext actionContext) { if (!actionContext.ModelState.IsValid) { actionContext.Response = actionContext.Request.CreateErrorResponse(HttpStatusCode.BadRequest, actionContext.ModelState); } } } } I decorated my Controller method with […]
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