禁用默认按钮或在asp.net C＃回车键 [英] disabling default button or enter key in asp.net c#

问题描述

我有，用户在扫描条形码形式，条码阅读器自动在值回车导致表单提交，因为浏览器选择的第一个按钮为默认值。我怎样才能从当在文本框entring一个值时，按下回车键禁用发生什么？

I have a form where users scan in a barcode, the barcode reader automatically enters a carriage return in the value causing the form to submit since the browser chooses the first button as the default. How can I disable anything from happening when the enter key is pressed when entring a value in that textbox?

推荐答案

您需要使用JavaScript来做到这一点。在您的标记文本框，添加的onkeydown处理，像这样：

You'll need to do it with javascript. In your markup for the text box, add an onkeydown handler like so:

<asp:TextBox ID="TextBox1" runat="server"
   onkeydown = "return (event.keyCode!=13);" >
</asp:TextBox>

这将返回false如果该键是输入键，将取消表单提交。

This will return false if the key was the enter key, which will cancel the form submission.

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