不要再拖别人的控件----1.输出几个小东西

 1.输出几个小东西

不要再拖别人的控件，开发自己的控件让别人拖去吧。

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namespace Mycontrol
{
    [DefaultProperty("Text")]
    [ToolboxData("<{0}:checkEmail runat=server ></{0}:checkEmail>")]
    public class checkEmail : WebControl
    {

        /// <summary>
        /// 用视图存取值
        /// </summary>
        public string txtValue
        {
            get { return ViewState["txtvalue"] == null ? "" : ViewState["txtvalue"].ToString(); }
            set { ViewState["txtvalue"] = value; }
        }


        protected override void RenderContents(HtmlTextWriter writer)
        {
            //输出一个表格 表格中有个文本框和按钮
            writer.AddAttribute(HtmlTextWriterAttribute.Border, "1px #CCC red");
            //输出表格
            writer.RenderBeginTag(HtmlTextWriterTag.Table);
            //输出tr
            writer.RenderBeginTag(HtmlTextWriterTag.Tr);

            //输出td1
            writer.RenderBeginTag(HtmlTextWriterTag.Td);
            /*--------------------输出文本框----------------*/
            writer.AddAttribute(HtmlTextWriterAttribute.Width, "100px");
            writer.AddAttribute(HtmlTextWriterAttribute.Id, "txtEmailValue");
            writer.AddAttribute(HtmlTextWriterAttribute.Type, "text");
            writer.AddAttribute(HtmlTextWriterAttribute.Value, this.txtValue);
            writer.RenderBeginTag(HtmlTextWriterTag.Input);
            writer.RenderEndTag();
            /*--------------------输出文本框 end----------------*/
            //end 输出td1
            writer.RenderEndTag();

            //输出td2
            writer.RenderBeginTag(HtmlTextWriterTag.Td);
            /*--------------------输出按钮----------------*/
            writer.AddAttribute(HtmlTextWriterAttribute.Width, "50px");
            writer.AddAttribute(HtmlTextWriterAttribute.Id, "btnSend");
            writer.AddAttribute(HtmlTextWriterAttribute.Type, "button");
            writer.AddAttribute(HtmlTextWriterAttribute.Value, "check");
            writer.RenderBeginTag(HtmlTextWriterTag.Input);
            /*--------------------输出按钮 end---------------*/
            writer.RenderEndTag();
            //end 输出td2
            writer.RenderEndTag();

            //end 输出tr
            writer.RenderEndTag();
            //end 输出表格
            writer.RenderEndTag();
        }


    }
}