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This article mainly shows you the "ASP.NET MVC5 verification of the Remote Validation sample analysis", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and study the "ASP.NET MVC5 verification of Remote Validation sample analysis" of this article.

Remote Validation invokes an Ajax request, either GET or POST, followed by a method, which has at least one parameter, and the return type of the method is in Json format. [this is done through JSOnResult in MVC], the parameter of this method is the attribute of the entity to be verified [must, otherwise it cannot be verified, the case of the parameter does not matter. If the value returned by this validation method is true, then the table name has the same user, and we return false to the foreground page. Indicates that the verification failed.

All right, let's get to the point!

First, create a new blank MVC project, and under the Model folder, create a new class RemoteUser:

Public class RemoteUser {public string Name {get; set;} public string Email {get; set;}}

Then create a test data class:

Public static class MyRemoteStaticData {public static List RemoteList {get {return new List () {new RemoteUser () {Name= "Daniel", Email= "Daniel@163.com"}, new RemoteUser () {Name= "CFS", Email= "CFS@163.com"};}

Create a new controller MyRemoteController [mainly used for Remote verification]:

Using Server_Side_Validation_IN_MVC.StaticData;using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;namespace Server_Side_Validation_IN_MVC.Controllers {public class MyRemoteController: Controller {/ / GET: MyRemote public JsonResult RemoteValidate (string name) / / the parameter name here must be the same as the name of the text box control in the view, but the case does not matter {/ / if there is a user name, that is, isExists=true bool isExists= MyRemoteStaticData.RemoteList. Where (s = > s.Name.ToLowerInvariant (). Equals (name.ToLower ()) .FirstOrDefault ()! = null; / / returns false to the foreground, indicating that userName return Json (! isExists,JsonRequestBehavior.AllowGet) already exists;}}

After adding validation above, let's modify the Model entity:

Using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;namespace Server_Side_Validation_IN_MVC.Models {public class RemoteUser {[Remote ("RemoteValidate", "MyRemote", ErrorMessage = "Sorry user name already exists! please re-enter!")] Public string Name {get; set;} public string Email {get; set;}

Then create a new test controller:

Using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;namespace Server_Side_Validation_IN_MVC.Controllers {public class UserController: Controller {public ActionResult AddRemoteUser () {return View ();}

Add AddRemoteUser view, [Note here, Remote Validation needs to introduce Jquery plug-in and enable client authentication]

Check here to introduce the script library, which is also mainly used to introduce Jquery plug-ins.

@ model Server_Side_Validation_IN_MVC.Models.RemoteUser@ {ViewBag.Title = "AddRemoteUser" } AddRemoteUser@using (Html.BeginForm ()) {@ Html.AntiForgeryToken () RemoteUser@ Html.ValidationSummary (true, ", new {@ class =" text-danger "}) @ Html.LabelFor (model = > model.Name, htmlAttributes: new {@ class =" control-label col-md-2 "}) @ Html.EditorFor (model = > model.Name, new {htmlAttributes = new {@ class =" form-control "}) @ Html.ValidationMessageFor (model = > model.Name," New {@ class = "text-danger"}) @ Html.LabelFor (model = > model.Email, htmlAttributes: new {@ class = "control-label col-md-2"}) @ Html.EditorFor (model = > model.Email, new {htmlAttributes = new {@ class = "form-control"}}) @ Html.ValidationMessageFor (model = > model.Email, ", new {@ class =" text-danger "}) @ Html.ActionLink (" Back to List ") "Index")

Then modify the default route:

Public static void RegisterRoutes (RouteCollection routes) {routes.IgnoreRoute ("{resource} .axd / {* pathInfo}"); routes.MapRoute (name: "Default", url: "{controller} / {action} / {id}", defaults: new {controller = "User", action = "AddRemoteUser", id = UrlParameter.Optional});}

Run the project:

Enter the test data: CFS, press the Tab key and verify it automatically.

Here we have done Remote verification on the Name field. Now I want to validate the Email field. I need to use the AdditionalFields attribute, and I need to add another verification method:

Using Server_Side_Validation_IN_MVC.StaticData;using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;namespace Server_Side_Validation_IN_MVC.Controllers {public class MyRemoteController: Controller {/ / GET: MyRemote public JsonResult RemoteValidate (string name) / / the parameter name here must be the same as the name of the text box control in the view, but the case does not matter {/ / if there is a user name, that is, isExists=true bool isExists= MyRemoteStaticData.RemoteList. Where (s = > s.Name.ToLowerInvariant (). Equals (name.ToLower ()) .FirstOrDefault ()! = null; / / returns false to the foreground, indicating that userName return Json (! isExists,JsonRequestBehavior.AllowGet) already exists;} public JsonResult RemoteValidationAddtional (string name, string email) {/ / if a user name exists, that is, isExists=true bool isExists= MyRemoteStaticData.RemoteList. Where (s = > s.Name.ToLowerInvariant (). Equals (name.ToLower ()) & & s.Email.ToLowerInvariant () .Equals (email.ToLower ()) .FirstOrDefault ()! = null; / / returns false to the foreground, indicating that userName return Json (! isExists, JsonRequestBehavior.AllowGet) already exists;}

Then modify the corresponding entity class:

Using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;namespace Server_Side_Validation_IN_MVC.Models {public class RemoteUser {[Remote ("RemoteValidate", "MyRemote", ErrorMessage = "Sorry user name already exists! please re-enter!")] Public string Name {get; set;} / / Note: for AdditionalFields= "Name" here, the Name field must be exactly the same as the field in Modle [Remote ("RemoteValidationAddtional", "MyRemote", AdditionalFields= "Name", ErrorMessage = "Sorry Email already exists! please re-enter!")] Public string Email {get; set;}

Then run the project:

Enter the test data written in the test class:

Here you Remote Validation the two fields.

The AdditionalFields validation field is used above, and if we want to validate more than one field, we can add it to the AddtionalFiled, separated by commas.

The above is all the contents of the article "sample Analysis of Remote Validation verified by ASP.NET MVC5". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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