如何使用输入类型=隐藏控件? [英] How to use input type=hidden control?

问题描述

朋友，

我是第一次使用隐藏的文本框

Hi Friends,

I''m using the hidden textbox for the first time

< input type="hiddden"/>

我以前没用过.应用程序要求将数据库中的值绑定到隐藏的输入标签.我尽了最大努力，但没有找到解决方案.请帮帮我.
下面给出的是我在.aspx文件中的代码:

I haven''t used it before. Application requires that a value from the database bound to a hidden input tag. I tried my best but didn''t get solution. Please help me out.
Given below is my code in the .aspx file:

<input id="Item_ID" type="hidden" name="Item_ID" runat="server"/>

并在.cs文件中:

and in the .cs file:

int.TryParse(Item_ID.Value, out subpageid);
Subpage subpage = subpageid > 0 ? new Subpage(subpageid) : new Subpage();

修正了他的拼写，并添加了asp.net标签[/编辑]

Fixed his spellings and added asp.net tag[/Edit]

推荐答案

嘿，

如果您没有为隐藏控件分配值，那么它将不会在回发时返回值.就这么简单:)

Hey there,

If you don''t assign a value to the hidden control then it won''t return a value on postback. Simple as that :)

<input id="Item_ID" type="hidden" name="Item_ID" runat="server" value="2" />

请，请参阅我设置的值属性.

DaveAuld试图告诉您的是，这是一个专业论坛，而不是SMS服务.因此，请尽量使用正确的拼写.

@DaveAuld:也许，他可能不会说流利的英语.为了以防万一，给他割个懒腰:)

希望对您有所帮助

Please, See the value attribute I''ve set.

What DaveAuld is trying to tell you is that, this is a professional forum, not a SMS service. So use correct spellings to the best of your strength.

@DaveAuld: Perhaps, he might not be fluent in using his english. Just in case, cut him some slack :)

Hope this helps, regards

您可以直接将值绑定到隐藏字段，例如，
值=''<％= YourServerSideVariable％>''

在这里请注意，"YourServerSideVariable"必须是公共的.


谢谢

Hi,

You can bind value to hidden field directly like,
value = ''<%= YourServerSideVariable%>''

Here note that "YourServerSideVariable" must be public.


Thanks

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