设置 'onClick'在代码隐藏中动态添加控件时调用客户端方法 [英] Set the 'onClick' to call a client method when dynamically adding control in Code Behind

问题描述

我正在代码隐藏中动态添加一个 RadioButtonList.我想要它，以便OnClick"不调用 JavaScript，而是调用我后面代码中的方法.

I am dynamically adding a RadioButtonList in the Code Behind. I want it so that the 'OnClick' does not call JavaScript, but instead it calls a method in my code behind.

这可能吗?

另外，有没有办法设置它，让这个say control有runat="server"?

In addition, is there a way to set it up so that this say control has runat="server"?

推荐答案

是的，这是可能的.此外，由于您是在代码中创建控件，因此不需要 runat="server".

Yes, it is possible. Also, there is no need to have runat="server" since your are creating the control in code.

您需要设置 RadioButtonList 对象的 OnSelectedIndexChanged 事件.正如@Robert 提到的，如果您要动态创建控件，则需要将它们包装在 Page_Init() 中.

You need to set your RadioButtonList object's OnSelectedIndexChanged event. As @Robert mentioned, if you are creating controls dynamically you need to wrap them in the Page_Init().

    protected void Page_Init(Object sender, EventArgs e) {
        RadioButtonList radiobuttonlist = new RadioButtonList();

        radiobuttonlist.SelectedIndexChanged += radiobuttonList_CheckedChanged;

        //Set the AutoPostBack to true proptery to that the user action
        // will immediately post-back to the server

        radiobuttonlist.AutoPostBack = true;
    }

    private void radiobuttonList_CheckedChanged(object sender, EventArgs e) {
        //Code you want to execut when a user selects a different item
    }

参考:https://msdn.microsoft.com/en-us/library/System.Web.UI.WebControls.ListControl.SelectedIndexChanged(v=VS.110).aspx

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