支持基于单选按钮来选择文本框中 [英] Enable text box based on radio button selected

问题描述

我有列出不同的业务类别的一个单选按钮列表。最后一个选项是其他类别。当用户选择了其他类，我希望能够使一个文本框，用户可以再输入更多的信息，解释其他的选择。

I have a Radio Button List that lists different business categories. The last option is the Other category. When the user selects the Other category, I want to be able to enable a text box that the user can then enter further information to explain the Other selection.

目前，我试图

    If rblCategory.SelectedIndex = 20 Then
        txtOther.Enabled = True
        lblOther.Text = rblCategory.SelectedItem.Text()
    End If

在此摘录，我这基础上的索引，但我也试着使其基于文本字段和值字段中，但我仍然没有得到它的工作。有什么建议？

In this excerpt, I am basing it on the index, but I've also tried basing it on the Text field as well as the Value field, but I still have not gotten it to work. Any suggestions?

推荐答案

如果您的断点没有被击中，这是一个很好的线索，更大的东西是错误的。做你与已ViewStateEnabled工作的控件=真的吗？对于一个单选按钮列表，我想你可能需要设置的CausesValidation = true，并且还的AutoPostBack =真。某些控件不回发默认情况下，我认为这可能是其中之一。

If your breakpoints aren't being hit, that is a good clue that something bigger is wrong. Do all of the controls you are working with have ViewStateEnabled=true? For a radio button list, I think you may need to set CausesValidation=true, and also AutoPostBack=true. Some controls do not post back by default and I think that may be one of them.

这篇关于支持基于单选按钮来选择文本框中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！