The code for this should not interrupt the user’s action, but should instead wait until the user leaves the form field to check the input text for “http”. So use “onblur” instead of “onkeyup”. Then, just see if the string contains “http” using indexOf. If not, it will return -1, which is falsey. function checkURL … Read more
TL;DR If you don’t want to read the entire article provided by Youssef and want a quick solution to how to make ModelState.IsValid return false. Do this. [TestMethod] public void TestLogin_InvalidModel() { AccountController controller = CreateAccountController(); // new code added –> controller.ModelState.AddModelError(“fakeError”, “fakeError”); // end of new code … var response = controller.PostLogin(new LoginModel() { … Read more
In order to make your Required attribute works you need to make field nullable: public DateTime? AppointmentDate { get; set; } Edit: also note that DataType attribute actually doesn’t perform validation on field. MVC validate date when applying binding from post data to model
It can be done using standard Required and MinLength validation attributes, but works ONLY for arrays: public class CreateJob { [Required] public int JobTypeId { get; set; } public string RequestedBy { get; set; } [Required, MinLength(1)] public JobTask[] TaskDescriptions { get; set; } }
If you are using Data Annotations to perform validation you might need a custom attribute: public class EnsureOneElementAttribute : ValidationAttribute { public override bool IsValid(object value) { var list = value as IList; if (list != null) { return list.Count > 0; } return false; } } and then: [EnsureOneElement(ErrorMessage = “At least a person … Read more
Try using the [StringLength] attribute: [Required(ErrorMessage = “Name is required.”)] [StringLength(40, ErrorMessage = “Name cannot be longer than 40 characters.”)] public string Name { get; set; } That’s for validation purposes. If you want to set for example the maxlength attribute on the input you could write a custom data annotations metadata provider as shown … Read more