javascript - How to display alert message in view page using viewbag - Stack Overflow

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In Cshtml the following doesn't work

ViewBag.alert = @"<script language='javascript'>alert('Plan Already Exists');</script>";

How can i achieve this

In Cshtml the following doesn't work

ViewBag.alert = @"<script language='javascript'>alert('Plan Already Exists');</script>";

How can i achieve this

• javascript
• alert

Share Improve this question Follow edited Mar 19, 2015 at 7:21 Satpal 133k1313 gold badges167167 silver badges170170 bronze badges asked Mar 19, 2015 at 7:14 Suhas ARSuhas AR 3911 gold badge11 silver badge88 bronze badges

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4 Answers 4

Sorted by: Reset to default 4

I am using MVC Razor with C#, and I got this logic to work in my view by updating it a bit:

@if (!string.IsNullOrEmpty(ViewBag.Message))
{
    <script type="text/javascript">
        alert("@ViewBag.Message");
    </script>
}

You need to pass ViewBag.alert as string to alert() function. Currently you are assign string to ViewBag.alert

Use

<script>
    alert('@ViewBag.alert');
</script>

You need to add a message to the ViewBag in your controller.

 public ActionResult Index() {
            ViewBag.Message = "Plan Already Exists";
            return View();
        } 

And then in your view, add a bit of script:

 <% if (!string.IsNullOrEmpty(ViewBag.Message)) { %>
    <script type="text/javascript">
        alert('<%=ViewBag.Message%>');
    </script>
<% } %>

You Can Use Like this:

Controller:

public ActionResult Index()
{
    ViewBag.msg = "View Bag Value";

    return View();
}

View:

if (!string.IsNullOrEmpty(ViewBag.msg))
{
     <script type="text/javascript">alert('@ViewBag.msg');</script>
}

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