当验证失败时,ASP.NET MVC如何在表单中重新填充值？

ModelState.IsValid告诉您,验证没有抛出任何错误.

ModelState.Values包含所有值和错误.

编辑

Ufuk的例子：

查看型号：

public class EmployeeVM
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

操作：

[HttpGet]
public ActionResult CreateEmployee()
{
    return View();
}

[HttpPost]
public ActionResult CreateEmployee(EmployeeVM model)
{
    model.FirstName = "AAAAAA";
    model.LastName = "BBBBBB";
    return View(model);
}

视图：

@model MvcApplication1.Models.EmployeeVM

@using (Html.BeginForm("CreateEmployee","Home")) {
    @Html.EditorFor(m => m)
    <input type="submit" value="Save"/>
}

如您所见,在POST方法中,值被AAAAA和BBBBB覆盖,但在POST后,表单仍显示已发布的值.它们取自ModelState.