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ASP.NET控件开发基础(1)

作者 佚名技术 来源 NET编程 浏览 发布时间 2012-05-21
继承CreditCardForm2类,重写Render方法即可

示例三

protected override void Render(HtmlTextWriter writer)
   {
    writer.AddStyleAttribute(HtmlTextWriterStyle.BorderWidth, "0");
    writer.RenderBeginTag(HtmlTextWriterTag.Table);
    writer.RenderBeginTag(HtmlTextWriterTag.Tr);
    writer.RenderBeginTag(HtmlTextWriterTag.Td);
    writer.Write("<strong>" + PaymentMethodText + "</strong>");
    writer.RenderEndTag();
    writer.RenderBeginTag(HtmlTextWriterTag.Td);
    writer.AddAttribute(HtmlTextWriterAttribute.Name, "PaymentMethod");
    writer.AddAttribute(HtmlTextWriterAttribute.Id, "PaymentMethod");
    writer.AddStyleAttribute(HtmlTextWriterStyle.Width, "100%");
    writer.RenderBeginTag(HtmlTextWriterTag.Select);

    writer.AddAttribute(HtmlTextWriterAttribute.Value, "0");
    writer.RenderBeginTag(HtmlTextWriterTag.Option);
    writer.Write("Visa");
    writer.RenderEndTag();

    writer.AddAttribute(HtmlTextWriterAttribute.Value, "1");
    writer.RenderBeginTag(HtmlTextWriterTag.Option);
    writer.Write("MasterCard");
    writer.RenderEndTag();

    writer.RenderEndTag();
    writer.RenderEndTag();
    writer.RenderEndTag();

    writer.RenderBeginTag(HtmlTextWriterTag.Tr);
    writer.RenderBeginTag(HtmlTextWriterTag.Td);
    writer.Write("<strong>" + CreditCardNoText + "</strong>");
    writer.RenderEndTag();
    writer.RenderBeginTag(HtmlTextWriterTag.Td);
    writer.AddAttribute(HtmlTextWriterAttribute.Name, "CreditCardNo");
    writer.AddAttribute(HtmlTextWriterAttribute.Id, "CreditCardNo");
    writer.AddAttribute(HtmlTextWriterAttribute.Type, "text");
    writer.RenderBeginTag(HtmlTextWriterTag.Input);
    writer.RenderEndTag();
    writer.RenderEndTag();
    writer.RenderEndTag();

    writer.RenderBeginTag(HtmlTextWriterTag.Tr);
    writer.RenderBeginTag(HtmlTextWriterTag.Td);
    writer.Write("<strong>" + CardholderNameText + "</strong>");
    writer.RenderEndTag();
    writer.RenderBeginTag(HtmlTextWriterTag.Td);
    writer.AddAttribute(HtmlTextWriterAttribute.Name, "CardholderName");
    writer.AddAttribute(HtmlTextWriterAttribute.Id, "CardholderName");
    writer.AddAttribute(HtmlTextWriterAttribute.Type, "text");
    writer.RenderBeginTag(HtmlTextWriterTag.Input);
    writer.RenderEndTag();
    writer.RenderEndTag();
    writer.RenderEndTag();

    writer.RenderBeginTag(HtmlTextWriterTag.Tr);
    writer.RenderBeginTag(HtmlTextWriterTag.Td);
    writer.Write("<strong>" + ExpirationDateText + "</strong>");
    writer.RenderEndTag();
    writer.RenderBeginTag(HtmlTextWriterTag.Td);
    writer.AddAttribute(HtmlTex

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