I want to display in my view some message when some user is added.
When something goes wrong in our model, there is a method (ModelState.AddModelError
) to handle unsuccessful messages. But, when the things go okay, how can we handle a message to the user saying that his action was a success?
I found this thread that provides a solution, but about three years passed and I need to know: there's not another way, perhaps more mature? Not that this is not, but we still deal with messages of success on this same way?
we can easily show the tempdata message in view all we need to do is binding the message to tempdata. View Code : In view we need to check whether “Tempdata” is null or not , if it is not null then put in any html tags like p , span ,etc..
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. Show activity on this post.
FormMethod – It specifies the Form Method i.e. GET or POST. In this case it will be set to POST. The Form consists of two elements i.e. a TextBox and a Submit Button. The ViewBag object named Message is checked for NULL and if it is not NULL then the value of the object is displayed using JavaScript Alert MessageBox.
Expanding from Brad Christie's answer, I created a NuGet package, BootstrapNotifications, that will do this for you with built-in Bootstrap3 support. This package also supports multiple notification types (error, warning, success, and info) with pre-styled alerts and is easily extendable.
The extension supports multiple notifications per request of the same type and different types elegantly.
NotificationExtensions.cs:
public static class NotificationExtensions
{
private static IDictionary<String, String> NotificationKey = new Dictionary<String, String>
{
{ "Error", "App.Notifications.Error" },
{ "Warning", "App.Notifications.Warning" },
{ "Success", "App.Notifications.Success" },
{ "Info", "App.Notifications.Info" }
};
public static void AddNotification(this ControllerBase controller, String message, String notificationType)
{
string NotificationKey = getNotificationKeyByType(notificationType);
ICollection<String> messages = controller.TempData[NotificationKey] as ICollection<String>;
if (messages == null)
{
controller.TempData[NotificationKey] = (messages = new HashSet<String>());
}
messages.Add(message);
}
public static IEnumerable<String> GetNotifications(this HtmlHelper htmlHelper, String notificationType)
{
string NotificationKey = getNotificationKeyByType(notificationType);
return htmlHelper.ViewContext.Controller.TempData[NotificationKey] as ICollection<String> ?? null;
}
private static string getNotificationKeyByType(string notificationType)
{
try
{
return NotificationKey[notificationType];
}
catch (IndexOutOfRangeException e)
{
ArgumentException exception = new ArgumentException("Key is invalid", "notificationType", e);
throw exception;
}
}
}
public static class NotificationType
{
public const string ERROR = "Error";
public const string WARNING = "Warning";
public const string SUCCESS = "Success";
public const string INFO = "Info";
}
_Notifications.cshtml:
@using YourApp.Extensions
@{
var errorList = Html.GetNotifications(NotificationType.ERROR);
var warningList = Html.GetNotifications(NotificationType.WARNING);
var successList = Html.GetNotifications(NotificationType.SUCCESS);
var infoList = Html.GetNotifications(NotificationType.INFO);
}
<!-- display errors -->
@if (errorList != null)
{
<div class="alert alert-danger alert-dismissable">
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button>
@if(errorList.Count() > 1){
<strong><span class="glyphicon glyphicon-remove"></span> There are @errorList.Count() errors: </strong>
<ul>
@foreach (String message in errorList)
{
<li>@Html.Raw(message)</li>
}
</ul>
}
else{
<strong><span class="glyphicon glyphicon-remove"></span> Error: </strong>
@Html.Raw(errorList.First())
}
</div>
}
<!-- display warnings -->
@if (warningList != null)
{
<div class="alert alert-warning alert-dismissable">
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button>
@if(warningList.Count() > 1){
<strong><span class="glyphicon glyphicon-warning-sign"></span> There are @warningList.Count() warnings: </strong>
<ul>
@foreach (String message in warningList)
{
<li>@Html.Raw(message)</li>
}
</ul>
}
else{
<strong><span class="glyphicon glyphicon-warning-sign"></span> Warning: </strong>
@Html.Raw(warningList.First())
}
</div>
}
<!-- display success -->
@if (successList != null)
{
<div class="alert alert-success alert-dismissable">
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button>
@if(successList.Count() > 1){
<strong><span class="glyphicon glyphicon-ok"></span> There are @successList.Count() successful notifications: </strong>
<ul>
@foreach (String message in successList)
{
<li>@Html.Raw(message)</li>
}
</ul>
}
else{
<strong><span class="glyphicon glyphicon-ok"></span> Success! </strong>
@Html.Raw(successList.First())
}
</div>
}
<!-- display success -->
@if (infoList != null)
{
<div class="alert alert-info alert-dismissable">
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button>
@if(infoList.Count() > 1){
<strong><span class="glyphicon glyphicon-info-sign"></span> There are @infoList.Count() notifications: </strong>
<ul>
@foreach (String message in infoList)
{
<li>@Html.Raw(message)</li>
}
</ul>
}
else{
<strong><span class="glyphicon glyphicon-info-sign"></span> </strong>
@Html.Raw(infoList.First())
}
</div>
}
To see all of this code and how its used, you can download a full working demo from github.
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With