为什么在我的POST操作方法中无法使用模型绑定? [英] Why is Model Binding not working in my POST action method?
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问题描述
我对MVC有一个非常奇怪的问题. 我的模型不断被提交为空. 这可能真的很简单，但我只是找不到问题.
I have a really wierd issue with MVC. My models keeps getting submitted empty. And it's probably really simple, but I just can't find the issue.
我的模型如下:
public class LoginModel
{
public string Username;
public string Password;
}
我的控制器是这样的:
[HttpGet]
public ActionResult Login()
{
return View();
}
[HttpPost]
public ActionResult Login(LoginModel loginTest)
{
if (loginTest.Username != "x" && loginTest.Password != "y")
{
ModelState.AddModelError("a", "Login failed.");
return View(loginTest);
}
else
{
return RedirectToAction("Home", "Welcome");
}
}
这样的视图也非常简单.
And the view is also very simple, like this.
@model LoginSolution.Models.LoginModel
@{
Layout = null;
}
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Login</title>
</head>
<body>
@using (Html.BeginForm("Login", "Home"))
{
<div> <span>Username : </span>
@Html.EditorFor(model => model.Username)
<br />
<span>Password : </span>
@Html.EditorFor(model => model.Password)
<br />
@Html.ValidationSummary()
<br />
<input type="submit" value="Login" name="Login" />
</div>
}
</body>
</html>
这不是有关安全性或最佳实践的问题. 这只是一个问题，为什么模型在提交后仍将自身返回为空.
This is not a question about security or best practice. This is just a question regarding why the model keeps returning itself as empty upon submitting.
推荐答案
您的模型包含字段，而不是属性(没有getter/setter)，因此模型绑定器无法设置值.将模型更改为
Your model contains fields, not properties (no getter/setter) so the model binder cannot set the values. Change your model to
public class LoginModel
{
public string Username { get; set; }
public string Password { get; set; }
}
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