Framework 2.0 in poi:
codice:
<asp:Button ID="btn" runat="server" Text="Esegui Javascript" OnClientClick="alert('ciao, mondo'); return false;" />
oppure:
codice:
ASPX:
<head runat="server">
<script type="text/javascript">
function ciaomondo() {
alert('ciao, mondo');
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="btn" runat="server" Text="Esegui Javascript" />
</div>
</form>
</body>
</html>
VB.Net
Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init
btn.Attributes.Add("onclick", "ciaomondo();return false;")
End Sub