Question

我的页面有2个输入类型=文字..

@model MVC3.ViewModel.TalkToUsVM

@using (Html.BeginForm())
{
    <ul>
        <li>@Html.TextBoxFor(m => m.TalkToUsRequest.Name)</li>
        <li>@Html.TextBoxFor(m => m.TalkToUsRequest.Email)</li>
    </ul>

    <input type="submit" value="Save"/>
}

在我的控制器中我这样做：

[HttpPost]
public ActionResult Create(TalkToUsRequest talkToUsRequest)
{
    var vm = new TalkToUsVM();

    if (TryValidateModel(talkToUsRequest))
    {
        vm.Result = "Success";

        return View("Create",vm);
    }

    vm = new TalkToUsVM
    {
        Result = "Errrooooooor",
        TalkToUsRequest = talkToUsRequest
    };

    return View(vm);
}

所以问题..当我的模型有效时，我将结果设置为“Success”，此时vm.TalkToUsRequest为null ..但是当呈现页面时，所有字段都具有与我提交时相同的值..甚至我设置vm.TalkToUsRequest = null !! 我该如何清除这些字段？

Answer 1

因此，在这种情况下，如果返回到同一视图，则必须清除模型状态。请尝试以下方法：

    ModelState.Clear();
    return View(vm);
}

Answer 2

你的回答：

>>> import timeit
>>> dir(timeit)
['Timer', '__all__', '__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__sp
ec__', '_globals', 'default_number', 'default_repeat', 'default_timer', 'dummy_src_name', 'gc', 'itertools', 'main', 're
indent', 'repeat', 'sys', 'template', 'time', 'timeit']
>>> help(timeit.timeit)
Help on function timeit in module timeit:

timeit(stmt='pass', setup='pass', timer=<built-in function perf_counter>, number=1000000, globals=None)
    Convenience function to create Timer object and call timeit method.

>>> timeit.timeit('''a=""; a+="b"*1000;''')
0.14870357161726633
>>> timeit.timeit('''a=""; a+="b"*1000;''')
0.13576636550958954
>>>
>>>
>>> def testme():
...     a = ""
...     a = "eyang" * 10000
...
>>> timeit("testme()")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'module' object is not callable
>>>
>>> timeit("testme()", setup="from __main__ import testme")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'module' object is not callable
>>>

它将更新您的视图状态

如果您还想同时清除所有Modelstate.error 也用：

TryUpdateModel(yourmodelname);

成功后清除字段

2 个答案: