不要再拖别人的控件----1.输出几个小东西-优快云博客

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();
        }


    }
}