1 //该方法为入口方法2 public virtual void RenderControl (HtmlTextWriter writer)   3 {        4   this.RenderControl(writer,this.xxxAdapter);   5 }   6  7 protected void RenderControl(HtmlTextWriter writer, ControlAdapter adapter)   8 {9   if (adapter != null)
10   {
11     //调用相关的适配器方法
12   }
13   else
14   {
15     this.Render(writer);
16   }
17 }
18
19 protected internal virtual void Render(HtmlTextWriter writer)
20 {
21   this.RenderChildren();
22 }
23
24 protected internal virtual void RenderChildren(HtmlTextWriter writer)
25 {
26   //呈现子控件
27 }
28
29 /*
30 整个呈现顺序就是：
31 1.RenderControl(HtmlTextWriter writer)
32 2.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
33 3.Render(HtmlTextWriter writer)
34 4.RenderChildren(HtmlTextWriter writer)
35 */

 1 protected override void Render(HtmlTextWriter writer)  2 {          3   this.RenderBeginTag(writer);  4   this.RenderContents(writer);  5   this.RenderEndTag(writer);  6 } 7  8 public virtual void RenderBeginTag  (HtmlTextWriter writer)  9 {
10   this.AddAttributesToRender(writer);
11   //呈现Tag开始标记
12 }
13
14 protected internal virtual void RenderContents  (HtmlTextWriter writer)
15 {
16   //调用Control的呈现
17   base.Render(writer);
18 }
19
20 public virtual void RenderEndTag(HtmlTextWriter writer)
21 {
22   //呈现结束标记
23 }
24
25 protected virtual void AddAttributesToRender  (HtmlTextWriter writer)
26 {
27   //呈现Attribute
28 } 

1 protected internal override void Render(HtmlTextWriterwriter)
2 {
3   //如果在设计时，创建子控件，也就是在设计时增加友好体验
4   if(DesignMode)
5     this.EnsureChildControls();
6   base.Render(writer);
7 }

 1 <configuration>2   <system.web>    3     <pages>4       <controls>5         <add tagPrefix="scottgu" src="~/Controls/Header.ascx" tagName="header"/>6         <add tagPrefix="scottgu" src="~/Controls/Footer.ascx" tagName="footer"/>7         <add tagPrefix="ControlVendor" assembly="ControlVendorAssembly"/>8       </controls>9     </pages>
10   </system.web>
11 </configuration>