在asp.net中,如何回车触发指定按钮的事件?
<script language="javascript">
        function btnClick()
        {
            if (event.keyCode == 13)
            {        
              event.keyCode=9;//Tab键的keyCode值
              event.returnValue = false;
              document.all["btnSearch"].click();
            }

        }
<script>

...
...
<form>
...
<asp:TextBox ID="txtUserName" onkeydown="btnClick();"   runat="server" Width="142px" AutoPostBack="True"></asp:TextBox>
<asp:Button ID="btnSearch" runat="server" OnClick="btnSearch_Click" Text="Button" AccessKey="K" /></td>

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