How to Implement MVC3 Model URL Validation?

asp.net-mvc-3, validation

Solution

good way is to implement your attribute for next use in mvc projects. like this:

public class UrlAttribute : RegularExpressionAttribute
{
    public UrlAttribute() : base(@"^http(s?)\:\/\/[0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*(:(0-9)*)*(\/?)([a-zA-Z0-9\-\.\?\,\'\/\\\+&%\$#_]*)?$")
    {}
}

so on the model:

[Url(ErrorMessage = "URL format is wrong!")]
public string BlogAddress { get; set; }

Problem

I've successfully implemented client side validation to require input in my textbox. However, I want to evaluate the contents of the textbox to see if it is a well formed URL. Here's what I have thus far: Index.cshtml: ``` <script type="text/javascript" src="@Url.Content("~/Scripts/jquery-1.5.1.js")"></script> <script type="text/javascript" src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.js")"></script> <script type="text/javascript" src="@Url.Content("~/Scripts/jquery.validate.js")"></script> <script type="text/javascript" src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.js")"></script> @model Ticket911.Models.ValidationModel @{ ViewBag.Title = "Home Page"; } <h2>@ViewBag.Message</h2> @using (Ajax.BeginForm("Form", new AjaxOptions() { UpdateTargetId = "FormContainer" , OnSuccess = "$.validator.unobtrusive.parse('form');" })) { <p> Error Message: @Html.ValidationMessageFor(m => m.URL) </p> <p> @Html.LabelFor(m =>m.URL): @Html.EditorFor(m => m.URL) </p> <input type="submit" value="Submit" /> ``` ValidationModel: ``` public class ValidURLAttribute : ValidationAttribute { public override bool IsValid(object value) { return (value != null); } } public class ValidationModel { [Required] public string URL {get; set;} } ``` How do I ensure that the model URL validation occurs? When the Submit button is clicked, what must be done to navigate to the URL entered into the textbox? Thanks much:)

Original source