第一步:定义Action
[HttpGet] //必须get,必须json public ActionResult CheckItemCodeExists(string ItemCode) //注意参数名称与前端的元素ID(属性名同名) { string[] itemCodes = { "bmw-x5", "audi-q7"}; bool isValid = string.IsNullOrEmpty(itemCodes.FirstOrDefault(x => x == ItemCode)); return Json(isValid, JsonRequestBehavior.AllowGet); //必须get,必须json }
第二步:定义Model
public class ItemModel { [DisplayName("物料代码")] [Required(ErrorMessage = "[物料代码]不能为空")] [Remote("CheckItemCodeExists", "Test", ErrorMessage = "[物料代码]已存在")] public string ItemCode { get; set; } }
第三步:
@model MvcApplication3.Models.ItemModel @section header1 { <script src="@Url.Content("~/Scripts/jquery-1.8.2.min.js")" type="text/javascript"></script> <script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script> <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script> } @{ ViewBag.Title = "Index"; } <h2>添加用户</h2> <fieldset> <legend>添加用户</legend> <div> @using(Html.BeginForm("index","Test")){ <p> @Html.ValidationSummary(true) @Html.LabelFor(m=>m.ItemCode): @Html.TextBoxFor(m=>m.ItemCode) @Html.ValidationMessageFor(m=>m.ItemCode) </p> <p> <input type="submit" value="提 交" /> </p> } </div> </fieldset>