Материал из .Net Framework эксперт
Default Button Demo
<%@ Page Language="C#" %>
<script runat="server">
protected void btnSearch_Click(object sender, EventArgs e)
{
lblResult.Text = "Search for: " + txtSearch.Text;
}
</script>
<html>
<head>
<title>Button Default Button</title>
</head>
<body>
<form id="form1" defaultbutton="btnSearch" runat="server">
<div>
<asp:Label
id="lblSearch"
Text="Search:"
AssociatedControlID="txtSearch"
Runat="server" />
<asp:TextBox
id="txtSearch"
Runat="server" />
<asp:Button
id="btnSearch"
Text="Search"
OnClick="btnSearch_Click"
Runat="server" />
<asp:Button
id="btnCancel"
Text="Cancel"
Runat="server" />
<hr />
<asp:Label
id="lblResult"
Runat="server" />
</div>
</form>
</body>
</html>
