javascript 如何使用 viewbag 在视图页面中显示警报消息
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How to display alert message in view page using viewbag
提问by Suhas AR
In Cshtml the following doesn't work
在 Cshtml 中以下不起作用
ViewBag.alert = @"<script language='javascript'>alert('Plan Already Exists');</script>";
How can i achieve this
我怎样才能做到这一点
回答by Dana Carrubba
I am using MVC Razor with C#, and I got this logic to work in my view by updating it a bit:
我正在将 MVC Razor 与 C# 一起使用，并且通过稍微更新它使此逻辑在我的视图中起作用：
@if (!string.IsNullOrEmpty(ViewBag.Message))
{
<script type="text/javascript">
alert("@ViewBag.Message");
</script>
}
回答by Satpal
You need to pass ViewBag.alertas string to alert()function. Currently you are assign string to ViewBag.alert
您需要将ViewBag.alert字符串作为字符串传递给alert()函数。目前您将字符串分配给ViewBag.alert
Use
利用
<script>
alert('@ViewBag.alert');
</script>
回答by Rahul Tripathi
You need to add a message to the ViewBag in your controller.
您需要向控制器中的 ViewBag 添加一条消息。
public ActionResult Index() {
ViewBag.Message = "Plan Already Exists";
return View();
}
And then in your view, add a bit of script:
然后在您看来，添加一些脚本：
<% if (!string.IsNullOrEmpty(ViewBag.Message)) { %>
<script type="text/javascript">
alert('<%=ViewBag.Message%>');
</script>
<% } %>
回答by belal ahmad
You Can Use Like this:
你可以这样使用：
Controller:
控制器：
public ActionResult Index()
{
ViewBag.msg = "View Bag Value";
return View();
}
View:
看法：
if (!string.IsNullOrEmpty(ViewBag.msg))
{
<script type="text/javascript">alert('@ViewBag.msg');</script>
}
