将变量添加到.NET MVC控制器

public ActionResult MyAction(string myVariable)
{
    // 在这里使用myVariable变量
    // ...
    return View();
}

http://example.com/Controller/MyAction?myVariable=value

<form action="/Controller/MyAction" method="post">
    <input type="text" name="myVariable" value="value" />
    <input type="submit" value="Submit" />
</form>

public ActionResult MyAction(string myVariable)
{
    ViewBag.VariableValue = myVariable;
    return View();
}

<p>Variable Value: @ViewBag.VariableValue</p>