Show ViewBag message for some seconds then redirect to another action
Question
I have an Action Method that sets a message to ViewBag and returns to the HomePage, like,
ViewBag.errormsg = "Some Temporary message";
return RedirectToAction("Index", "Dashboard");
As per this approach User won't be able to see the ViewBag.errormsg in that page, Because it redirects to Dashboard immediately, But I want to show That message for 1 to 2 second then after redirect to dashboard.
I have tried using Task.WaitAll(); method to delay the call for RedirectToAction like here,
ViewBag.errormsg = "Some Temporary message";
Task.WaitAll(Task.Delay(2000));
return RedirectToAction("Index", "Dashboard");
But it's fairly a silly work, that ViewBag won't show message until the return method is called, Is there any simple way to accomplish this ?
I think TempData is not suitable in my case because I don't want to show that ViewBag Message to HomePage, It should be shown in the current page.
2 answers
solution1
0 2016-06-15 06:04:39
You wont be able to do that on the server side, you'll have to use javascript.
You can use:
window.setTimeout(function(){
window.location.href='your URL';
}, 2000);
solution2
0 2016-06-15 06:48:22
I figured out what process that you want to do:
Controller => Current view => Redirect => Dashboard view
First, include your message in current view:
ViewBag.errormsg = "Some Temporary message";
return View("CurrentView");
Set an HTML element to show that message and use JS timeout on current CSHTML view:
<script type="text/javascript">
function onMessageShow() {
var msg = "@ViewBag.errormsg";
// if the message exists, set redirection to dashboard page
if (msg != null || typeof msg !== "undefined") {
setTimeout('redirect', 5000); // 5 seconds for example
}
}
function redirect() {
window.location.href = "@Url.Content("Index", "Dashboard")";
// or use window.location.replace, depending what your need
}
</script>
<html>
<body onload="onMessageShow()">
<!-- simplified for brevity -->
<p>@ViewBag.errormsg</p>
<!-- simplified for brevity -->
</body>
</html>
Task.WaitAll with Task.Delay used together in server-side to delay execution of server-side process (including async processes), in your case there are client-side events which redirecting to index page after message appears.
CMIIW.
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