ASP.NET单选按钮变化 [英] ASP.NET radio button change

问题描述

我试图找出为什么这个code不火的单选按钮更改事件。

这里的ASP页面code 2单选按钮

 ＆LT; ASP：单选按钮ID =rdoButton1组名=组1文本=是值=是=服务器OnCheckedChanged =Group1_CheckedChanged/＆GT;
  ＆LT; ASP：单选按钮ID =rdoButton2组名=组1文本=否值=否=服务器OnCheckedChanged =Group1_CheckedChanged/＆GT;
 

和这里的背后code：

 保护无效Group1_CheckedChanged（对象发件人，EventArgs的发送）
{
    如果（rdoButton1.Checked）{
        panel1.Visible = TRUE;
    }    如果（rdoButton2.Checked）{
        panel1.Visible = FALSE;
    }
}
 

解决方案

您需要指定属性和值<一个href=\"http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.checkbox.autopostback.aspx\"><$c$c>AutoPostBack=\"true\"为了告诉ASP.NET是不断变化的是的元素会触发回发。它应适用于您要进行回传每个单选按钮。

I am trying to figure out why this code doesn't fire the radio button change event.

here's the ASP page code for 2 radio buttons

  <asp:RadioButton ID="rdoButton1" GroupName="Group1" Text="Yes" Value="Yes"  runat="server" OnCheckedChanged="Group1_CheckedChanged" />
  <asp:RadioButton ID="rdoButton2" GroupName="Group1" Text="No" Value="No" runat="server" OnCheckedChanged="Group1_CheckedChanged" />

And here's the code behind:

protected void Group1_CheckedChanged(Object sender, EventArgs e)
{
    if (rdoButton1.Checked) {
        panel1.Visible = true;
    }

    if (rdoButton2.Checked) {
        panel1.Visible = false;
    }
}

解决方案

You'll need to specify the attribute and value AutoPostBack="true" in order to tell ASP.NET that changing of that element should trigger a postback. It should be applied to each individual RadioButton which you wish to cause a postback.

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