Introduction:
In this article I will explain how to show alert
message from server side using asp.net
in C#, VB.NET.
Description:
In previous articles I explained Call JavaScript function from code behind in asp.net, Call Server side function from JavaScript, Call Page methods from JSON in asp.net many articles relating to Asp.net, C#.NET, JavaScript, Gridview, JQuery etc. Now I will explain how to show alert message from server side using asp.net in C#, VB.NET.
In previous articles I explained Call JavaScript function from code behind in asp.net, Call Server side function from JavaScript, Call Page methods from JSON in asp.net many articles relating to Asp.net, C#.NET, JavaScript, Gridview, JQuery etc. Now I will explain how to show alert message from server side using asp.net in C#, VB.NET.
ScriptManager.RegisterStartupScript() method.
This method will allow us to show alert message directly from server side or we
can Call JavaScript function from code behind in asp.net.
Declaration
of ScriptManager.RegisterStartupScript()
metod:
|
ScriptManager.RegisterStartupScript(Control
control, Type type,string key, string script,
bool addScriptTags) |
Here
I will explain how to show JavaScript alert message in code behind and how to
call JavaScript function from code behind in asp.net. For that first create new
website and write following code in aspx page
|
<html
xmlns="http://www.w3.org/1999/xhtml">
<head
runat="server">
<title>Call Javascript functions and show alert
message from code behind file in asp.net Page</title>
<script
type="text/javascript">
function Showalert() {
alert('Call JavaScript function from codebehind');
}
</script>
</head>
<body>
<form
id="form1"
runat="server">
<div>
<asp:Button
ID="btnSubmit"
runat="server"
Text="Show
alert" onclick="btnSubmit_Click" />
<asp:Button
ID="btnClick"
runat="server"
Text="Call
JavaScript Function"
onclick="btnClick_Click"
/>
</div>
</form>
</body>
</html>
|
Now add following namespaces in codebehind file
|
using System;
using System.Web.UI;
|
After that write the following code in code behind
C#
code
|
protected void
Page_Load(object sender, EventArgs e)
{
}
//This button click event is used to show alert message directly
protected void
btnSubmit_Click(object sender, EventArgs e)
{
ScriptManager.RegisterStartupScript(this,GetType(),"showalert","alert('Only alert Message');",true);
}
// This button click event is used to show alert message from
JavaScript function
protected void
btnClick_Click(object sender, EventArgs e)
{
ScriptManager.RegisterStartupScript(this, GetType(), "displayalertmessage",
"Showalert();", true);
}
|
VB.NET
|
Imports System.Web.UI
Partial Class
Default
Inherits System.Web.UI.Page
Protected Sub
Page_Load(ByVal sender As Object, ByVal e As
EventArgs)
End Sub
'This button click event is used to show alert message directly
Protected Sub
btnSubmit_Click(ByVal sender As Object, ByVal e As
EventArgs)
ScriptManager.RegisterStartupScript(Me, [GetType](), "showalert",
"alert('Only alert Message');", True)
End Sub
' This button click event is used to show alert message from
JavaScript function
Protected Sub
btnClick_Click(ByVal sender As Object, ByVal e As
EventArgs)
ScriptManager.RegisterStartupScript(Me, [GetType](), "displayalertmessage",
"Showalert();", True)
End Sub
End Class
|
Demo
 |
|
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8 comments :
how to implement Google translate in website
Please Give a example for mobile application using c#
Give the example of chat application using C#
very simple to understand ur explanation with demo,Excellent.
hi sir,
how can we use scriptmanger.registerstartup in c# class file...
please help me.
when iam using ScriptManager.RegisterStartupScript the dropdown in the page is losing it's CSS..any solution for it
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