Question

我有注册模型

我的模特课

public class RegisterViewModel
{


    [Required]
    [StringLength(100, ErrorMessage = "Please enter a minimum of {2} characters", MinimumLength = 6)]
    [DisplayName("University ID")]
    [Remote("doesusernameExist", "HEC",null, ErrorMessage = "usr name is allready exist", HttpMethod = "POST")]
    public string usrname { get; set; }    }

我的json控制器类

 [HttpPost]
    public JsonResult doesusernameExist(string usrname)
    {

         var institute = db.Institutes.Find(HEI_ID);
                   return Json(institute == null);


    }

用于创建新用户并使用上述模型编辑用户I。所以没有创建另一个模型，我想在编辑方法中禁用dousernameExist调用方法

Answer 1

首先在编辑视图中禁用username的客户端验证：

@Html.TextBoxFor(m => m.username, new { @data_val = "false" })

编辑帖子操作中的第二个从username删除ModelState的验证结果：

public ActionResult EditUser([Bind(Exclude = "usrname")]RegisterViewModel model)
{
    ModelState.Remove("username");
    if (ModelState.IsValid)
    {
    .
    .
    .

Answer 2

首先在“查看方式”中添加“隐藏”字段：

@Html.hidden("PreviousUsername", Model.usrname)

在您的.cs类中添加以下内容：

[Remote("doesusernameExist", "HEC", ErrorMessage = "usr name is allready exist", AdditionalFields = "PreviousUsername")]
public string usrname { get; set; }

您的控制器操作方法应类似于：

public JsonResult doesusernameExist(string usrname, string PreviousUsername)
{

     if(usrname==PreviousUsername)
     {
       return true;
     }
     var institute = db.Institutes.Find(HEI_ID);
     return Json(false, JsonAlloBehaviour.AllowGet);

}

远程验证限制编辑控制器方法

2 个答案: