如何在视图中显示用户名的此错误

尝试

{

if（storeView.storeid == 0）

{

// check如果usernamne存在

WebSecurity.CreateUserAndAccount（StoreModel.UserName，StoreModel.Password）;

}

}

//如果用户不存在到此处，我想显示我在模型状态中添加的错误。

catch（MembershipCreateUserException e）

{

ModelState.AddModelError（UserName，输入用户存在）;

返回View（storeModel）;

}





//无法显示错误，因为未通过@ Html.ValidationMessage显示错误，显示黄色死亡屏幕

try
{
if (storeView.storeid == 0)
{
//check if usernamne exists
WebSecurity.CreateUserAndAccount(StoreModel.UserName, StoreModel.Password);
}
}
//if user doesn't exists comes here and i want to display the error i added in modelstate in view.
catch (MembershipCreateUserException e)
{
ModelState.AddModelError("UserName", "Entered User exists");
return View(storeModel);
}


//unable to display error in view not showing error through @Html.ValidationMessage, showing Yellow screen of Death