如何提供asp.net mvc的成功消息?

How do I provide success messages in asp.net mvc?

如何在asp.net mvc中提供成功消息?

5 个解决方案

#1

If you're displaying a message on a different page than ViewData won't help you, since it's reinitialized with each request. On the other hand, TempData can store data for two requests. Here's an example:

如果在不同的页面上显示消息，那么ViewData不会对您有所帮助，因为每个请求都会重新初始化消息。另一方面，TempData可以为两个请求存储数据。这里有一个例子:

public ActionResult SomeAction(SomeModel someModel)
        {
            if (ModelState.IsValid)
            {
                //do something
                TempData["Success"] = "Success message text.";
                return RedirectToAction("Index");
            }
            else
            {
                ViewData["Error"] = "Error message text.";
                return View(someModel);
            }
        }

Inside if block you must use TempData because you're doing redirection (another request), but inside else you can use ViewData.

在if块内部，您必须使用TempData，因为您正在执行重定向(另一个请求)，但是在其他内部，您可以使用ViewData。

And inside view you could have something like this:

从内部来看，你可以有这样的东西:

@if (ViewData["Error"] != null)
{
    <div class="red">
        <p><strong>Error:</strong> @ViewData["Error"].ToString()</p>
    </div>
}
@if (TempData["Success"] != null)
{
    <div class="green">
        <p><strong>Success:</strong> @TempData["Success"].ToString()</p>
    </div>
}

#2

in your controller, you can do this:

在控制器中，您可以这样做:

ViewData["Message"] = "Success"

and in your view you you can check if there is a message to display, and if so than display it:

在您的视图中，您可以检查是否有要显示的消息，如果有，则显示:

@if (ViewData["Message"] != null)
    <div>success</div>

#3

Use ViewData to store success messages. Create the success message in the Controller and check for it in the View. If it exists, render it.

使用ViewData存储成功消息。在控制器中创建成功消息，并在视图中检查它。如果存在，渲染它。

#4

TempData can be used like a dictionary. Each saved value lasts for the current and the next request. Perfect for redirects.

TempData可以像字典一样使用。每个保存的值持续到当前和下一个请求。适合重定向。

this.TempData["messages"] = "Success!";
return RedirectToAction("YourAction");

#5

I have a tendency to store my errors and successes in the same array/object and pass them to the view.

我倾向于将我的错误和成功存储在同一个数组/对象中，并将它们传递给视图。

Since most of my error/success message would appear in the same spot and they usually don't occur at the same time, this is usually not a problem.

因为我的大多数错误/成功消息都会出现在同一个位置，而且它们通常不会同时出现，所以这通常不是问题。

I have a function called ShowFeedback() that is called as a usercontrol and does the logic to determine what to show. The errors and successes are marked up the same in HTML and only the css differs a bit. So you could have

我有一个名为ShowFeedback()的函数，它被称为usercontrol，并执行逻辑来确定要显示什么。错误和成功在HTML中标记为相同的，只有css稍有不同。所以你可以有

<div id="feedback" class="error">
    Your error message
</div>

或

<div id="feedback" class="success">
    Your success message
</div>

#1

public ActionResult SomeAction(SomeModel someModel)
        {
            if (ModelState.IsValid)
            {
                //do something
                TempData["Success"] = "Success message text.";
                return RedirectToAction("Index");
            }
            else
            {
                ViewData["Error"] = "Error message text.";
                return View(someModel);
            }
        }