哪个事件写以下代码? [英] Which event to write the following code?

问题描述

我想根据单选按钮列表中的选定项目启用按钮；我在radbtnlist的Selected_Item_Changed事件中编写了以下代码.但是它不起作用，可能是什么问题?

RadioButtonList1_SelectedIndexChanged(对象发送者，EventArgs e)
{
如果(RadioButtonList1.SelectedItem.Value ==我同意")
{
btnSubmit.Visible = true;
}
其他
{
btnSubmit.Visible = false;
}
}

Hi,
I want to enable a button depending on the selected item from the radio button list;I have written the following code in Selected_Item_Changed event of the radbtnlist.But it is not working,what can be the problem?

RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
{
if (RadioButtonList1.SelectedItem.Value == "I Agree")
{
btnSubmit.Visible = true;
}
else
{
btnSubmit.Visible = false;
}
}

推荐答案

你好，
像这样禁用表单加载上的按钮

Hello,
Disable the button on form load like this

private void Form1_Load(object sender, EventArgs e)
        {
            button1.Enabled = false;
        }

然后使用单选按钮的checked_changed事件完成操作

and then use the checked_changed event of radio button to do your trick

private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            if (radioButton1.Checked == true)
            {
                button1.Enabled = true;
            }
        }

一旦找到有用的答案，就对我的答案进行评分
谢谢&问候
基数:rose:

Do rate my answer once you find it useful
Thanks & Regards
Radix :rose:

您可能想看看CheckChanged

好吧，就像你说的那样，你想使按钮在选择特定项目时启用从单选按钮列表中，然后为您提供示例
在下面的代码中，我再次使按钮在表单加载时禁用

Ok like u said that u want to make the button enable on selecting a particular item from the radiobutton list right then hers an example for you
In the below code i have again made the button disable on form load

private void Form2_Load(object sender, EventArgs e)
        {
            button1.Enabled = false;
        }

现在您要做的就是在我的代码中使用单选按钮的SelectedIndexChanged事件，我使用了一个复选框列表，两者相同并且可以正常工作，唯一的区别是在复选框中您可以选择多个项目，但是在单选按钮中您不能执行那

now all you had to do is use the SelectedIndexChanged event of your radio button in my code i have used a checkbox list both are same and will work fine the only difference is that in checkbox u can select multiple item but in radio button you cannot do that

private void checkedListBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
//now here if the first item in the checklistbox is selected then the button will be enabled
            if (checkedListBox1.SelectedIndex == 0)
            {
                button1.Enabled = true;

            }
              else
            {
                button1.Enabled = false;
            }
            
        }

现在您要做的就是使用此逻辑在单选按钮的选定索引上启用该按钮，这里0表示我的复选框列表中的第一项...
一旦找到有用的答案，就对我的答案进行评分
谢谢&问候
基:rose:

Now all u have to do is use this logic to enable that button on the selected index of your radio button, here 0 indicates the first item in my checkbox list...
Do rate my answer once you find it useful
Thanks & Regards
Radix :rose:

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