动态单选按钮 CheckedChanged 事件不会触发答案

【问题标题】：Dynamic Radio Button CheckedChanged event won't fire动态单选按钮 CheckedChanged 事件不会触发
【发布时间】：2012-05-05 13:51:56
【问题描述】：

我正在使用 C# 动态创建两个单选按钮，但 CheckedChange 事件没有触发。我正在使用以下代码：

RadioButton enable = new RadioButton();
enable.ID = "enable";
enable.Text = "Enable";
enable.GroupName = "enableDisableGroup";
enable.CheckedChanged += new EventHandler(enableRadioButton_CheckedChanged);

RadioButton disable = new RadioButton();
disable.ID = "disable";
disable.Text = "Disable";
disable.GroupName = "enableDisableGroup";
disable.CheckedChanged += new EventHandler(disableRadioButton_CheckedChanged);

UpdatePanel upEnableDisable = new UpdatePanel();
upEnableDisable.UpdateMode = UpdatePanelUpdateMode.Conditional;
upEnableDisable.ContentTemplateContainer.Controls.Add(enable);
upEnableDisable.ContentTemplateContainer.Controls.Add(disable);

AsyncPostBackTrigger enableTrigger = new AsyncPostBackTrigger();
enableTrigger.ControlID = enable.ID;
enableTrigger.EventName = "CheckedChanged";
upEnableDisable.Triggers.Add(enableTrigger);
AsyncPostBackTrigger disableTrigger = new AsyncPostBackTrigger();
disableTrigger.ControlID = disable.ID;
disableTrigger.EventName = "CheckedChanged";
upEnableDisable.Triggers.Add(disableTrigger);

mainDiv.Controls.Add(upEnableDisable);

创建单选按钮后，我将Checked Changed 事件与它们相关联。然后我将这些放在更新面板中。我还尝试创建两个AsyncPostBackTriggers，但这也没有用。你能告诉我上面提供的代码 sn-p 有什么问题吗？

【问题讨论】：

我认为您必须为 checkchanged 事件注册 AsyncPostBackTrigger。但是您已经尝试过了，对吗？
是的，您可以在上面的代码中看到它。 enableTrigger.EventName = "CheckedChanged";
尝试为您的单选按钮设置 AutoPostBack="true"！

标签： c# asp.net updatepanel dynamic-controls

【解决方案1】：

RadioButton enable = new RadioButton();
enable.ID = "enable";
enable.Text = "Enable";
enable.AutoPostBack = true;
enable.GroupName = "enableDisableGroup";
enable.CheckedChanged += new EventHandler(enableRadioButton_CheckedChanged);

RadioButton disable = new RadioButton();
disable.ID = "disable";
disable.Text = "Disable";
disable.AutoPostBack = true;
disable.GroupName = "enableDisableGroup";
disable.CheckedChanged += new EventHandler(disableRadioButton_CheckedChanged);

UpdatePanel upEnableDisable = new UpdatePanel();
upEnableDisable.UpdateMode = UpdatePanelUpdateMode.Conditional;
upEnableDisable.ContentTemplateContainer.Controls.Add(enable);
upEnableDisable.ContentTemplateContainer.Controls.Add(disable);

AsyncPostBackTrigger enableTrigger = new AsyncPostBackTrigger();
enableTrigger.ControlID = enable.ID;
enableTrigger.EventName = "CheckedChanged";
upEnableDisable.Triggers.Add(enableTrigger);
AsyncPostBackTrigger disableTrigger = new AsyncPostBackTrigger();
disableTrigger.ControlID = disable.ID;
disableTrigger.EventName = "CheckedChanged";
upEnableDisable.Triggers.Add(disableTrigger);

mainDiv.Controls.Add(upEnableDisable);

【讨论】：