The Asp.Net button has 2 attributes to trigger a click
event OnClick and OnClientClick.
OnClientClick – Calls the client side
(JavaScript) event handler
OnClick – Calls the server side (code-behind) event handler
The OnClientClick event handler can be used to perform client side validations and to get a confirmation from the user before triggering the server side event handler as follows.
OnClientClick="if(!confirm('Are you sure you want to Save?')) return false;"
Here is a full example
OnClick – Calls the server side (code-behind) event handler
The OnClientClick event handler can be used to perform client side validations and to get a confirmation from the user before triggering the server side event handler as follows.
OnClientClick="if(!confirm('Are you sure you want to Save?')) return false;"
Here is a full example
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>OnClientClick</title>
</head>
<body>
<form id="frmOnClientClick" runat="server">
<div>
<asp:Button
id="btnSave"
runat="server"
Text="Client Click"
OnClientClick="if(!confirm('Are you sure you want to Save?'))
return false;"
return false;"
onclick="btnSave_Click"/>
</div>
</form>
</body>
</html>Here once the user clicks on the button, a confirmation message 'Are you sure you want to Save?' will get poped up in a message box with, if the user selects Yes then the server side event will be triggered, else the server side event will not be triggered.
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