Render,RenderChildren,RenderControl

protected internal virtual void Render(HtmlTextWriter writer)
{
    this.RenderChildren(writer);
}

protected internal virtual void RenderChildren(HtmlTextWriter writer)
{
    ICollection children = (this._occasionalFields == null) ? null : ((ICollection) this._occasionalFields.Controls);
    this.RenderChildrenInternal(writer, children);
}


internal void RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
{
    if ((this.RareFields != null) && (this.RareFields.RenderMethod != null))
    {
        writer.BeginRender();
        this.RareFields.RenderMethod(writer, this);
        writer.EndRender();
    }
    else if (children != null)
    {
        foreach (Control control in children)
        {
            control.RenderControl(writer);
        }
    }
}

 

 
public virtual void RenderControl(HtmlTextWriter writer)
{
    this.RenderControl(writer, this.Adapter);
}

protected void RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
{
    if (!this.flags[0x10] && !this.flags[0x200])
    {
        HttpContext context = (this.Page == null) ? null : this.Page._context;
        if ((context != null) && context.TraceIsEnabled)
        {
            int bufferedLength = context.Response.GetBufferedLength();
            this.RenderControlInternal(writer, adapter);
            int num2 = context.Response.GetBufferedLength();
            context.Trace.AddControlSize(this.UniqueID, num2 - bufferedLength);
        }
        else
        {
            this.RenderControlInternal(writer, adapter);
        }
    }
}

private void RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
{
    if (adapter != null)
    {
        adapter.BeginRender(writer);
        adapter.Render(writer);
        adapter.EndRender(writer);
    }
    else
    {
        this.Render(writer);
    }
}

 
Render----->RenderChilds---->RenderControl------Render
 
一个重写Render的例子:

 

 

protected override void Render(HtmlTextWriter pOutPut)
        {
            pOutPut.Write("<Div Class=\"TabControl tab-pane\" ID=\"" + this.UniqueID + "_Tab\" Style=\"" + EPWebControl.GetControlStyle(this.Width, base.Style) + "\">");
            //隐藏的控件
            this.SelectedTab.RenderControl(pOutPut);
            //标签头部
            pOutPut.Write("<DIV Class=\"tab-row\">");
            this.RenderTabButton(pOutPut);
            pOutPut.Write("</Div><Div>");
            //标签内容
            this.RenderTabContent(pOutPut);
            pOutPut.Write("</Div></Div>");
        }

 

private void RenderTabButton(HtmlTextWriter pOutPut)
        {
                for (int num1 = 0; num1 < this.Items.Count; num1++)
                {
                    if(this.Items[num1].Visible == true)
                    {
                        if (this.Items[num1].Selected)
                        {
                            pOutPut.Write("<H2 class=\"tab hover selected\" onMouseOver=\"Tab_OnMouseOver(this)\" onMouseOut=\"Tab_OnMouseOut(this)\">" + this.Items[num1].Caption + "</H2>");
                        }
                        else 
                        {
                            pOutPut.Write("<H2 class=\"tab\" onMouseOver=\"Tab_OnMouseOver(this)\" onMouseOut=\"Tab_OnMouseOut(this)\" onClick=\"Tab_OnSelectServerClick(this,'" + this.Items[num1].UniqueID + "');" + this.Page.GetPostBackEventReference(this, "") + "\">" + this.Items[num1].Caption + "</H2>");
                        }
                    }
                }
            
        }

 

private void RenderTabContent(HtmlTextWriter pOutPut)
        {
            for (int i = 0; i < this.Items.Count; i++)
            {
                if(this.Items[i].Visible == true)
                {
                    this.Items[i].RenderControl(pOutPut);
                }
            }
        }

 

item的 Render

 

protected override void Render(HtmlTextWriter pOutPut)
        {
            if(this.Visible)
            {
                if (this.Selected)
                {
                    pOutPut.Write(string.Concat(new object[] { "<DIV id=\"", this.UniqueID, "\" class=\"tab-page\" style=\"Height:", this._Owner.Height, ";Width:100%;DISPLAY: block\">" }));
                }
                else
                {
                    pOutPut.Write(string.Concat(new object[] { "<DIV id=\"", this.UniqueID, "\" class=\"tab-page\" style=\"Height:", this._Owner.Height, ";Width:100%;DISPLAY: none\">" }));
                }
            }
            this.RenderChildren(pOutPut);
            pOutPut.Write("</DIV>");
        }