回车键在ASP.NET2.0中的应用

1.按回车键不提交数据。 
if (window.event.keyCode == 13)
{
    event.returnValue=false;
    event.cancel = true;
}
2.在文件框中按回车键触发提交事件
TextBox1.Attributes.Add("onkeydown", "if(event.which || event.keyCode){if ((event.which == 13) || (event.keyCode == 13)) {document.getElementById('"+Button1.UniqueID+"').click();return false;}} else {return true}; ");
3.ASP.NET2.0中网页打开设置一个默认的按钮焦点
<form defaultbutton="button1" runat="server">
    <asp:textbox id="textbox1" runat="server"/>
    <asp:textbox id="textbox2" runat="server"/>
    <asp:button id="button1" text="Button1" runat="server"/>

    <asp:panel defaultbutton="button2" runat="server">
        <asp:textbox id="textbox3" runat="server"/>
        <asp:button id="button2" runat="server"/>
    </asp:panel>

</form>
Trackback：http://www.beansoftware.com/ASP.NET-Tutorials/Accept-Enter-Key.aspx