UrlReWriter 实现方法续_解决FROM action 跳转问题

最新推荐文章于 2025-09-08 00:09:35 发布

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最新推荐文章于 2025-09-08 00:09:35 发布

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文章标签： ui

原文链接：http://www.cnblogs.com/yssoft/articles/1488209.html

本文介绍了一种使用ASP.NET2.0的控件适配器扩展架构来自定义HtmlForm控件输出的方法，通过创建FormRewriterControlAdapter类并重写Render方法，可以修改form标签的action属性。

FormRewriterControlAdapter.cs

public class FormRewriterControlAdapter:System.Web.UI.Adapters.ControlAdapter
{
     public FormRewriterControlAdapter()
     {
         //
         // TODO: 在此处添加构造函数逻辑
         //
     }

     protected override void Render(HtmlTextWriter writer)
     {
         base .Render( new RewriteFormHtmlTextWriter(writer));
     }
}

public class RewriteFormHtmlTextWriter:HtmlTextWriter
{
     /// <summary>
     /// 调用基类的构造方法
     /// </summary>
     /// <param name="writer"></param>
     public RewriteFormHtmlTextWriter(HtmlTextWriter writer): base (writer)
     {
         this .InnerWriter = writer.InnerWriter;
     }

     public RewriteFormHtmlTextWriter(System.IO.TextWriter writer): base (writer)
     {

         base .InnerWriter = writer;
     }

     public override void WriteAttribute( string name, string value, bool fEncode)
     {
         if (name == " action " )
         {
             HttpContext context = HttpContext.Current;

             if (context.Items[ " ActionAlreadyWritten " ] == null )
             {
                 value = context.Request.RawUrl;

                 context.Items[ " ActionAlreadyWritten " ] = true ;
             }
         }
         base .WriteAttribute(name, value, fEncode);
     }
}

然后在 App_Browsers 文件夹添加 BrowserFile.browser 浏览器文件
在里面添加以下一段代码

   < browser refID ="Default" >
     < controlAdapters >
       < adapter controlType ="System.Web.UI.HtmlControls.HtmlForm"
                adapterType ="FormRewriterControlAdapter" />
     </ controlAdapters >
   </ browser >

这里利用新的 ASP.NET 2.0控件适配器扩展架构来定制控件的输出，用你提供的值来覆盖action属性的值
不需要自己重写页面代码

II原来的解决方法

namespace ActionlessForm {
   public class Form : System.Web.UI.HtmlControls.HtmlForm
   {
      protected override void RenderAttributes(HtmlTextWriter writer)
      {
         writer.WriteAttribute( " name " , this .Name);
         base .Attributes.Remove( " name " );

         writer.WriteAttribute( " method " , this .Method);
         base .Attributes.Remove( " method " );

         this .Attributes.Render(writer);

         base .Attributes.Remove( " action " );

         if ( base .ID != null )
            writer.WriteAttribute( " id " , base .ClientID);
      }
   }
}

页面中的 Form 继承该Form 就可以实现相同的目的了

转载于:https://www.cnblogs.com/yssoft/articles/1488209.html