本文介绍了如何从服务器代码添加Control到ContentPlaceHolder？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我的意思是，我想做类似的事情：ContentPlaceHolder1.Controls.Add（Panel1），但我不想将Panel1放在aspx文件中，因为我想从抽象页面添加控件。
I mean, I want to do something like that: ContentPlaceHolder1.Controls.Add(Panel1), but I don't want to put Panel1 in aspx file because I want to add Controls from a abstract page.
推荐答案
Panel pnl = new Panel();
pnl.Controls.Add(new TextBox()); // add textbox to panel can be whatever control you want
ContentPlaceHolder cph = (ContentPlaceHolder)this.Master.FindControl("MainContent");
cph.Controls.Add(pnl);
或者：
Or alternatively:
Panel pnl2 = new Panel();
pnl2.Controls.Add(new TextBox()); // add textbox to panel can be whatever control you want
ContentPlaceHolder cph = (ContentPlaceHolder)this.Master.FindControl("MainContent").Controls.Add(pnl2);
ASPX页码：
ASPX Page Code:
<asp:content id="HeaderContent" runat="server" contentplaceholderid="HeadContent" xmlns:asp="#unknown">
</asp:content>
<asp:content id="BodyContent" runat="server" contentplaceholderid="MainContent" xmlns:asp="#unknown">
<p>Page content here</p>
</asp:content>
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