也许它不是最好的代码。如果您有一些建议，请告诉我。
开发@MVC4
具有自定义属性的模型属性
[CustomRemote("ValidateIP", "Validation", ErrorMessage = "Input is not a valid IP")]
子类 RemoteAttribute
/// <summary>
/// Custom Remote Attribute for Client an Server validation.
/// </summary>
public class CustomRemoteAttribute : RemoteAttribute
{
/// <summary>
/// List of all Controllers on MVC Application
/// </summary>
/// <returns></returns>
private static List<Type> GetControllerList()
{
return Assembly.GetCallingAssembly().GetTypes().Where(type => type.IsSubclassOf(typeof(Controller))).ToList();
}
/// <summary>
/// Constructor of base class.
/// </summary>
protected CustomRemoteAttribute()
{
}
/// <summary>
/// Constructor of base class.
/// </summary>
public CustomRemoteAttribute(string routeName)
: base(routeName)
{
}
/// <summary>
/// Constructor of base class.
/// </summary>
public CustomRemoteAttribute(string action, string controller)
: base(action, controller)
{
}
/// <summary>
/// Constructor of base class.
/// </summary>
public CustomRemoteAttribute(string action, string controller, string areaName)
: base(action, controller, areaName)
{
}
/// <summary>
/// Overridden IsValid function
/// </summary>
/// <param name="value"></param>
/// <param name="validationContext"></param>
/// <returns></returns>
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
// Find the controller passed in constructor
var controller = GetControllerList().FirstOrDefault(x => x.Name == string.Format("{0}Controller", this.RouteData["controller"]));
if (controller == null)
{
// Default behavior of IsValid when no controller is found.
return ValidationResult.Success;
}
// Find the Method passed in constructor
var mi = controller.GetMethod(this.RouteData["action"].ToString());
if (mi == null)
{
// Default behavior of IsValid when action not found
return ValidationResult.Success;
}
// Create instance of the controller to be able to call non static validation method
var instance = Activator.CreateInstance(controller);
// invoke the method on the controller with value
var result = (JsonResult)mi.Invoke(instance, new object[] { value });
// Return success or the error message string from CustomRemoteAttribute
return (bool) result.Data ? ValidationResult.Success : new ValidationResult(base.ErrorMessageString);
}
}
验证控制器代码
/// <summary>
/// Controller for Client and Server validation
/// <remarks>disable OutputCache</remarks>
/// </summary>
[OutputCache(Location = OutputCacheLocation.None, NoStore = true)]
public class ValidationController : Controller
{
/// <summary>
/// !!!!!!!!!!!!!!!!!! Needed for instance creation in custom attribute !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
/// </summary>
public ValidationController()
{
}
/// <summary>
/// IP regex pattern of my choice
/// </summary>
const string IpPattern = @"^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$";
/// <summary>
/// MAC regex pattern of my choice
/// </summary>
const string MacPattern = "^([0-9A-F]{2}[:-]){5}([0-9A-F]{2})$";
/// <summary>
/// Validate IP
/// </summary>
/// <param name="ip">IP param is only submited on Serverside validation!!!</param>
/// <returns>Validation Result</returns>
public JsonResult ValidateIP(string ip)
{
// Check if ip and httpcontext is null to dodge NullReferenceException on Server side validation
if (string.IsNullOrEmpty(ip) && HttpContext == null)
{
return Json(false, JsonRequestBehavior.AllowGet);
}
/* Use IP on Serverside validation
* Use Querystring Param 0 to get IP from Client side vaildation without the need for the correct Id of input control */
string checkip = string.IsNullOrEmpty(ip) ? HttpContext.Request.QueryString[0] : ip;
if (string.IsNullOrEmpty(checkip))
{
return new JsonResult { Data = true, JsonRequestBehavior = JsonRequestBehavior.AllowGet };
}
return new JsonResult
{
Data = Regex.IsMatch(checkip, IpPattern),
JsonRequestBehavior = JsonRequestBehavior.AllowGet
};
}
}