ASP.NET MVC - 通过传递一些数据重定向到一个控制器/动作 [英] ASP.NET MVC - redirecting to a Controller/Action by passing some data

问题描述

我在需要检查执行前的一些条件不同的控制器动作。如果条件不满足，我希望用户被重定向到另一个页面上下一步该做什么指令（指令将包括一个链接，用户必须遵守）。

I have actions in different controllers that need to check for a some condition before execution. If the condition is not met, I want the user be redirected to another page with instructions on what to do next (the instructions will include a link that the user must follow).

例如SendMessage函数（）动作位于的消息控制器：

For example SendMessage() action is located in the Message controller:

public ActionResult SendMessage()
{
    // check if user has enough credit
    if (!hasEnoughCredit(currentUser))
    {
    	// redirect to another page that says:

    	// "You do not have enough credit. Please go to LinkToAddCreditAction
    	// to add more credit."
    }

    // do the send message stuff here 
}

我想有一个通用的行动称为ShowRequirements（）位于要求控制器。

I want to have a single generic action called ShowRequirements() located in Requirements controller.

在SendMessage函数（）动作，我想设置，我想展示给用户的消息，然后转发用户ShowRequirements（）动作。我只是不希望消息出现在ShowRequirements行动的URL。

In SendMessage() action, I would like to set the message that I want to show to the user and then forward the user to ShowRequirements() action. I just don't want the message to appear in the URL of the ShowRequirements action.

有什么办法）进行通信这些数据来ShowRequirements（动作？

Is there any way to communicate this data to ShowRequirements() action?

推荐答案

好吧，我觉得我得到它错了。正如约翰和安德鲁提到我只需要通过ViewData的数据传递到视图。

Okay, I think I was getting it wrong. As John and Andrew mentioned I simply have to pass the data via ViewData to a view.

于是我在共享的/视图/做出了RequirementsPage.aspx。现在我任何行动，我填写ViewData字典，并把它传递给RequirementsPage.aspx是这样的：

So I made a RequirementsPage.aspx in the /views/Shared. Now in whichever action I am, I fill in the ViewData dictionary and pass it to the RequirementsPage.aspx like this:

public ActionResult SendMessage()
{
    // check if user has enough credit
    if (!hasEnoughCredit(currentUser))
    {
        // redirect to another page that says:
        ViewData["key1"] = "some message";
        ViewData["key2"] = "UrlToTheAction";
        return View("RequirementsPage");
    }

    // do the send message stuff here 
}

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