为什么我不能在asp：复选框上设置值？ [英] Why I can't set a value on a asp:CheckBox?

问题描述

没有属性 Value ：

<asp:CheckBox ID="CheckBox1" runat="server" />

而对于标准HTML：

<input type="checkbox" ID="CheckBox1" value="My Valyue" />

为什么？

推荐答案

Text 属性用于为复选框渲染标签。

The Text property is used to render a label for the checkbox.

InputAttributes 属性可以添加到：

The control has an InputAttributes property that you can add to:

myChk.InputAttributes.Add("value", "My Value");

我相信如果你简单地添加 value

I believe that if you simply add the value attribute to the markup, this will also get populated.

您可以访问该值：

myChk.InputAttributes["value"];

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要回答 / em> 价值不是 CheckBox 控件的内置属性：

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To answer the question of why Value is not a build in attribute to the CheckBox control:

A CheckBox 在隔离（只是其本身）不需要任何值。根据定义，它是一个布尔值，由其ID标识。

A CheckBox in isolation (just by itself) needs no value. By definition it is a boolean and is identified by its ID. All you need to do is check whether it was checked or not.

当您群组核取方块并且有控制项时，该值就会起作用为此 - CheckBoxList 使用 ListItem - 每个 ListItem 有 Value 属性。

The value comes into play when you group checkboxes and there is a control for that - the CheckBoxList that uses ListItem - each ListItem does have a Value property.

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