remote-validation

I need to validate an input field value from user before the form is submitted. I have created an action in my custom controller and decorated the field with it: action name: CheckValue controller name: Validate [Remote("CheckValue", "Validate"), ErrorMessage="Value is not valid"] public string Value { get; set; } The problem is when I press submit, the form is being submitted and then the message Value is not valid is shown if the value entered by the user is not valid. How can I validate the value entered by user and prevent the form to be submitted if value is not valid, and display the

At the link below I asked a question about how to ensure a field does not already contain the same value (for example when there is a unique constraint on a field which correctly causes C# to throw an exception when voilated). With the answer I received, it solved that problem but presented another. Ensuring another record does not already contain the same value for a field The main issue I now have is that when I create a new View. The validation works as expected. In brief - The system needs to check that the ViewName and ViewPath (route) are both unique so a search of the DB is required.

I want to validate existence of Email Id in database using [Remote] data Annotation in Model. But when I call a remote JsonResult Action method the parameter will be null and the result will be always be false and error message will be displayed. What is the problem in my code? Model : public class RegisterModel { [Required(ErrorMessage = "Email is Required!", AllowEmptyStrings = false)] [Remote("IsEmailIdExists", "Account", ErrorMessage = "Email Id already exists in Database")] [Display(Name = "Email Id")] [RegularExpression("[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+.[A-Za-z]{2,4}", ErrorMessage =

I have the following model: public class Customer { public string FirstName {get;set;} public string LastName {get; set;} [Remote("CardExisting", "Validation", AdditionalFields="FirstName,LastName") public string CardNumber {get; set;} } CardExisting action will check that there is an existing record for the combination of cardNumber for the firstName and LastName. What if user will first enter the card number and then his name, I cant validate him, so when he returns and input his name I need to remote validate again, how can I do that when focus was already lost from cardnumber property?

I used the following tutorial: http://msdn.microsoft.com/en-us/library/gg508808%28VS.98%29.aspx And everything seemed fine, but in my case, string Username always comes back null. After tonnes of research, I found everyone discovered BIND Prefixes. That would be great in many circumstances, but not this one. I should note all properties and names line up, however in my for loop, the EditorFor creates a [i].Username field and this doesn't map to any model property. QUESTION: I think I want to map [i].Username to Username where i is any number from 0-infinity, so when it GETS, the value is