如何在控制器中显示警报消息

I am using one controller which is inserting values in the database. I want to display alert message from controller when the values insertesd in the database successfully. Is it possible. If yes then how?

我正在使用一个在数据库中插入值的控制器。我想在值成功插入数据库时显示来自控制器的警报消息。可能吗。如果是，那怎么样？

4 个解决方案

#1

Basically that depends on how are you inserting the value into the database, as you would need a method to tells you whether the insertion was successful. As there's a few ways to do that now, linq/entity framework/sql/etc.

基本上，这取决于您如何将值插入数据库，因为您需要一种方法来告诉您插入是否成功。因为现在有几种方法可以做到，linq / entity framework / sql / etc.

Then after you know whether did the insertion happens, then you can just assign a value to a variable and then from the code/aspx just check the value and do a simple alert.

然后在您知道插入是否发生之后，您可以只为变量赋值，然后从代码/ aspx中检查值并执行简单警报。

<script type="text/javascript">
//i'm using jquery ready event which will call the javascript chunk after the page has completed loading
$(document).ready(function(){
//assuming that your variable name from the code behind is bInsertSuccess
var bSuccess = "<%= bInsertSuccess %>";
if(bSuccess){
    alert("Successfully Inserted");
}
});
</script>

#2

You can add the result to ViewData. For example:

您可以将结果添加到ViewData。例如：

if (SaveToDbOK)
{
    ViewData["Success"] = "Data was saved successfully.";
   // Do other things or return view
}

In your view you can place anywhere:

在您的视图中，您可以放在任何地方

MVC2:

MVC2：

<% if (ViewData["Success"] != null) { %>
    <div id="successMessage">
        <%: ViewData["Success"] %>
    </div>
<% } %>

MVC3:

MVC3：

@if (ViewData["Success"] != null) {
    <div id="successMessage">
        @ViewData["Success"]
    </div>
@}

I used this approach in my last project in order to make the information returned from the server unobtrusive. Checking whether ViewData["Success"] or ViewData["Failure"] are done in the Master page, the divs are formatted using CSS, jQuery code was used to hide the notifications after 5 seconds.

我在上一个项目中使用了这种方法，以便从服务器返回的信息不引人注目。检查ViewData [“Success”]或ViewData [“Failure”]是否在Master页面中完成，div使用CSS格式化，jQuery代码用于在5秒后隐藏通知。

Regards,

问候，

Huske

#3

public ActionResult UploadPropertyImage()
{
    // Business logic....
    return Content("<script language='javascript' type='text/javascript'>alert('Save Successfully');</script>");
}

#4

You may add below code to tell user

您可以添加以下代码来告诉用户

Return Content("Data added successfully");

#1