禁用后，asp.net文本不发送值 [英] asp.net text doesn't send value when disabled

问题描述

我必须使用jQuery启用和禁用文本框，效果很好.禁用的文本框中有值.但是我面临的问题是，禁用的文本框不会将值传递给服务器.当我使用jQuery启用它时，我在后面的代码中看到了文本框值(调试模式).为何会发生这种情况的任何想法，或者从背后的代码中从禁用的文本框中获取价值的替代方法.

I have to enable and disable the text box using jQuery, which works fine. The disabled text box has value in it. But the issue I am facing is that, the disabled textbox doesn't pass value to server.When I enable it using jQuery, I see text box value in code behind (Debugging mode). Any ideas why this is happening or alternative approach to get value from disabled textbox in code behind.

HTML:

 <asp:TextBox ID="txtUniqueNo" runat="server" onkeyup = "OnChange(this)" required/>

我用来在视图页面中禁用的Javascript

Javascript that i use to disable in view page

var inputBox = $("#<%=txtUniqueNo.ClientID%>");
inputBox.prop('disabled', true);

谢谢

推荐答案

原因很简单，由于网络浏览器提交限制政策，已禁用输入值未提交给服务器.

The reason is simple, disabled inputs values aren't submitted to the server due to web-browsers submission limitation policy.

W3 规范指出，禁用的输入标签被认为是无效的，不应提交.

The W3 spec says that input tags that are disabled are considered invalid and should not be submitted.

相反，请使用readonly属性:

<input type="text" readonly />

或使用jQuery:

$("#<%=txtUniqueNo.ClientID%>").attr('readonly', 'readonly');

更新:

请根据需要查看如何删除readonly属性: http://jsfiddle.net/ynevet/84HrM/

Look how to remove the readonly attribute if needed: http://jsfiddle.net/ynevet/84HrM/

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