单选按钮组：当回发为真时未触发事件，并且在单选按钮上设置为默认值时为未选中 [英] radio button group : event is not firing when post back is true and when checked is set for on radio button as default value

问题描述

我有一个页面

 <％@     Page    标题 < span class =code-keyword> =    语言  =  C＃    MasterPageFile   = 〜/ UserArea / MainMaster.master    AutoEventWireup   =  true    CodeFile   =  Default.aspx.cs   继承  =  _默认   ％>  
 
 <   asp：内容    ID   =  Content1    ContentPlaceHolderID   =  head    Runat   = 服务器 >  
 <   / asp：Content  >  
 <   asp：内容    ID   =  Content2    ContentPlaceHolderID   =  ContentPlaceHolder1    Runat   = 服务器 >  
 <  < span class =code-leadattribute> p  >  
 <   br     /  >  
 <   asp：RadioButton     ID   =  RadioButton1    runat   =  server    AutoPostBack   =  True  
   
                          已检查  =  True    GroupName   =     oncheckedchanged   =  RadioButton1_CheckedChanged    /  >  
 <   asp：RadioButton     ID   =  RadioButton2    runat   =  server    AutoPostBack   =  True  
   
                           GroupName   =  a    oncheckedchanged   =  RadioBu tton2_CheckedChanged    /  >  
 <   asp：按钮    ID   =  Button1 < span class =code-attribute>   runat   =  server    onclick   =   Button1_Click   文字  = 按钮    /  >  
 <   / p  >  
 <   p  >  
 & nbsp;  <   / p  >  
 <   p  < span class =code-keyword>>  
 <   / p  >  
 <   / asp：内容 >  

和CS页面

 使用系统; 
 使用 System.Collections.Generic; 
 使用 System.Linq; 
 使用 System.Web; 
 使用 System.Web.UI; 
 使用 System.Web.UI.WebControls; 
 
  public   partial   class  _Default：System.Web.UI.Page 
 {
  protected   void  Page_Load（ object  sender，EventArgs e）
 {
  //    
} 
  protected   void  RadioButton1_CheckedChanged（ object  sender，EventArgs e）
 {
  //  代码块 
} 
 受保护  void  RadioButton2_CheckedChanged（ object  sender，EventArgs e）
 {
  //  代码块 
} 
 受保护  void  Button1_Click（ object  sender，EventArgs e）
 {
 RadioButton2.Checked =  true ; 
} 
} 

我要求在页面加载期间选中单选按钮1并按下按钮更改为未选中，单选按钮2被选中。我的问题是在按下按钮后检查更改事件未触发..plzz帮助.........

解决方案

< blockquote>我通过更改我的按钮点击来解决这个问题

  protected   void  Button1_Click（ object  sender，EventArgs e）
 {
 RadioButton2.Checked = 真; 
 RadioButton1.Checked =  false ; 
} 

这是一个很好的。为什么单选按钮显示这样的行为

i have a page

<%@ Page Title="" Language="C#" MasterPageFile="~/UserArea/MainMaster.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <p>
        <br />
        <asp:RadioButton ID="RadioButton1" runat="server" AutoPostBack="True"

            Checked="True" GroupName="a" oncheckedchanged="RadioButton1_CheckedChanged" />
        <asp:RadioButton ID="RadioButton2" runat="server" AutoPostBack="True"

            GroupName="a" oncheckedchanged="RadioButton2_CheckedChanged" />
        <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
    </p>
    <p>
        &nbsp;</p>
    <p>
    </p>
</asp:Content>

and CS page

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
      //
    }
    protected void RadioButton1_CheckedChanged(object sender, EventArgs e)
    {
//code block
    }
    protected void RadioButton2_CheckedChanged(object sender, EventArgs e)
    {
//code block
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        RadioButton2.Checked = true;
    }
}

its my requirement that radio button 1 is checked during page load and when button pressed it change to unchecked and radio button 2 is checked.my problem is after pressing button checked change event is not firing..plzz help.........

解决方案

i solve this by changing my button click

protected void Button1_Click(object sender, EventArgs e)
  {
      RadioButton2.Checked = true;
      RadioButton1.Checked = false;
  }

is this a good one.why radio button show such behaviour

这篇关于单选按钮组：当回发为真时未触发事件，并且在单选按钮上设置为默认值时为未选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！