In this article we will learn how to display alert and confirm message Box in ASP.NET.
In ASP.NET to display alert message Box using Java Script and make a alertmethod().
The below code define the Alert message Box.
We can also define the Alert MessageBox with the Response.Write.
For example
Double click on the Button control and add the following code.
In ASP.NET web page to display the confirm Message box using java script.
The below code define the Java script to display confirm message Box.
Alert Message Box
The below code define the Alert message Box.
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="WebForm1.aspx.vb" Inherits="WebApplication42.WebForm1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/Javascript" language ="javascript" >
function alert_meth() {
alert("This show the alert MessageBox");
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Style="z-index: 100; left: 64px; position: absolute;
top: 88px" Text="Alert" OnClientClick ="alert_meth()" Font-Bold="True" ForeColor="Red" Width="72px"/>
</div>
</form>
</body>
</html>
Now run the application.
Now click on the alert Button to display the alert MessageBox.
We can also define the Alert MessageBox with the Response.Write.
For example
Double click on the Button control and add the following code.
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
Response.Write("<script>alert('Hello')</script>")
End Sub
Confirmation Message box
The below code define the Java script to display confirm message Box.
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="WebForm1.aspx.vb" Inherits="WebApplication42.WebForm1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script language="javascript" type="text/javascript">
function confirm()
{
if (confirm ==true)
else
return false;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Style="z-index: 100; left: 64px; position: absolute;
top: 88px" Text="Confirm" Font-Bold="True" ForeColor="Brown" Width="72px"/>
</div>
</form>
</body>
</html>
Now double click on the button control and add the following code.Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
Button1.Attributes.Add("onclick", "return confirm('This is a confirm Box?');")
End Sub
Now run the application and click on the Confirm Button.
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