自定义的asp.net翻页控件

自定义的asp.net翻页控件,利用RenderContents事件，动态生成页码，

并用ＪＡＶＡＳＣＲＩＰＴ触发后台翻页事件

用脚　本触发事件得实例接口：IPostBackEventHandler  

其下有一个方法public void RaisePostBackEvent(string eventArgument)  

 

也就是当点击事件：output.AddAttribute(HtmlTextWriterAttribute.Onclick, Page.ClientScript.GetPostBackEventReference(this, "__sp_TurnPage_" + preIndex + "_" + PageCount));

传入参数。。分析参数就可以做自已想要的事情。

 

 

自定义控件不了解的可以看:http://www.jiamaocode.com/Cts/1035.html

自定义事件不懂的可以看另一篇:http://www.jiamaocode.com/Cts/1150.html

 

 

C# 代码

[DefaultProperty("Text")]  

    [ToolboxData("<{0}:splitpage runat=server></{0}:splitpage>")]  

    public class splitpage : WebControl,IPostBackEventHandler  

    {  

        private int _SelectPageCount = 10;  

        [Bindable(true)]  

        [Category("SelectPageCount")]  

        [DefaultValue("10")]  

        [Localizable(true)]  

        public int SelectPageCount {  

            get {  

                return _SelectPageCount;  

            }  

            set { _SelectPageCount = value; }  

        }  

  

        private int _PageIndex = 1;  

        [Bindable(true)]  

        [Category("PageIndex")]  

        [DefaultValue("10")]  

        [Localizable(true)]  

        public int PageIndex  

        {  

            get  

            {  

                return _PageIndex;  

            }  

            set { _PageIndex = value; }  

        }  

  

        private int _PageCount = 1;  

        [Bindable(true)]  

        [Category("PageCount")]  

        [DefaultValue("1")]  

        [Localizable(true)]  

        public int PageCount  

        {  

            get  

            {  

                return _PageCount;  

            }  

            set { _PageCount = value; }  

        }  

  

        string _pageindexCss = "PageIndexCSS";  

        /// <summary>  

        /// 翻页的样式  

        /// </summary>  

        [Bindable(true)]  

        [Category("PageIndexCss")]  

        [DefaultValue("1")]  

        [Localizable(true)]  

        public string PageIndexCss  

        {  

            get { return _pageindexCss; }  

            set { _pageindexCss = value; }  

        }  

        string _CurPageindexCss = "PageCurIndexCSS";  

        /// <summary>  

        /// 当前页的样式  

        /// </summary>  

        [Bindable(true)]  

        [Category("CurPageIndexCss")]  

        [DefaultValue("1")]  

        [Localizable(true)]  

        public string CurPageIndexCss  

        {  

            get { return _CurPageindexCss; }  

            set { _CurPageindexCss = value; }  

        }  

  

        public delegate void DelegatePageIndexChange(object sender,int pageIndex,int pageCount);  

        public event DelegatePageIndexChange PageIndexChangeHanlder;  

  

        //重写默认的标签  

        protected override HtmlTextWriterTag TagKey { get { return HtmlTextWriterTag.Div; } }       

    

        protected override void RenderContents(HtmlTextWriter output)  

        {  

            //output.AddAttribute(HtmlTextWriterAttribute.Onclick,Page.ClientScript.GetPostBackEventReference(this,"test"));  

            //output.RenderBeginTag(HtmlTextWriterTag.Div);  

            //output.Write("test");  

            //output.RenderEndTag();  

  

            //首先写入翻页样式  

            if (CurPageIndexCss == "PageCurIndexCSS" || PageIndexCss == "PageIndexCSS")  

            {  

                output.AddAttribute(HtmlTextWriterAttribute.Type, "text/css");  

                output.RenderBeginTag(HtmlTextWriterTag.Style);  

                output.Write("a.PageIndexCSS{padding: 2px;padding-left:4px;padding-right:4px;background: #fff;border: 1px solid #9AAFE5;text-decoration: none;color: #2452ac;margin-right:6px;" +  

        "cursor: pointer;}a.PageIndexCSS:link{color: #2452ac;text-decoration: none;cursor: pointer;}a.PageIndexCSS:visited{color: #2452ac;text-decoration: none;cursor: pointer;}a.PageIndexCSS:active" +  

    "{color: #2452ac;text-decoration: underline;cursor: pointer;}a.PageIndexCSS:hover{border: 1px solid #2452ac;color: black;text-decoration: underline;cursor: pointer;}a.PageCurIndexCSS{padding: 2px;" +  

       "padding-left:4px;padding-right:4px;border: 1px solid #2452ac;background-color: #2452ac;text-decoration: none;color: #fff;margin-right:6px;}");  

                output.RenderEndTag();  

            }  

            var showPagesList = new List<int>();  

            showPagesList.Add(1);//加上第一页     

            if (PageCount > 1) showPagesList.Add(2);  

  

            int showFirst = PageIndex - SelectPageCount / 2 + 1;  

            int showLast = PageIndex + SelectPageCount / 2;  

            if (showFirst < 0) showLast = showLast - showFirst;  

            if (showLast > PageCount) showLast = PageCount;  

  

            for (int i = showFirst; i < showLast; i++)  

            {  

                if (!showPagesList.Contains(i) && i > 0) showPagesList.Add(i);//如果里面不存在则加入显示行列  

            }  

  

            if (PageCount - 1 > 1 && !showPagesList.Contains(PageCount - 1)) showPagesList.Add(PageCount - 1);//加上最后第二页  

            if (PageCount > 1 && !showPagesList.Contains(PageCount)) showPagesList.Add(PageCount);//加上最后一页  

  

            //写入上一页  

            int preIndex = PageIndex > 1 ? PageIndex - 1 : 0;  

            //如果当前页不如首页.则显示上一页  

            if (preIndex > 0)  

            {  

                output.AddAttribute(HtmlTextWriterAttribute.Class, PageIndexCss);  

                output.AddAttribute(HtmlTextWriterAttribute.Onclick, Page.ClientScript.GetPostBackEventReference(this, "__sp_TurnPage_" + preIndex + "_" + PageCount));  

                output.RenderBeginTag(HtmlTextWriterTag.A);  

                output.Write("上一页");  

                output.RenderEndTag();  

            }  

            //显示中间页  

            int showedindex = 0;  

            foreach (int index in showPagesList)  

            {  

                if (index - showedindex > 1)  

                {  

                    output.RenderBeginTag(HtmlTextWriterTag.Span);  

                    output.Write(" ... ");  

                    output.RenderEndTag();  

                }  

                output.AddAttribute(HtmlTextWriterAttribute.Class,index==PageIndex?CurPageIndexCss:PageIndexCss);  

                if (index != PageIndex) output.AddAttribute(HtmlTextWriterAttribute.Onclick, Page.ClientScript.GetPostBackEventReference(this, "__sp_TurnPage_" + index + "_" + PageCount));  

                output.RenderBeginTag(HtmlTextWriterTag.A);  

                output.Write(index);  

                output.RenderEndTag();  

  

                showedindex = index;  

            }  

  

            //写入下一页  

            int nextIndex = PageIndex < PageCount ? PageIndex + 1 : 0;  

            //如果当前页不为最后一页.则显示下一页  

            if (nextIndex > 0)  

            {  

                output.AddAttribute(HtmlTextWriterAttribute.Class, PageIndexCss);  

                output.AddAttribute(HtmlTextWriterAttribute.Onclick, Page.ClientScript.GetPostBackEventReference(this, "__sp_TurnPage_" + nextIndex + "_" + PageCount));  

                output.RenderBeginTag(HtmlTextWriterTag.A);  

                output.Write("下一页");  

                output.RenderEndTag();  

            }  

        }         

  

        /// <summary>  

        /// 响应事件  

        /// </summary>  

        /// <param name="eventArgument"></param>  

        public void RaisePostBackEvent(string eventArgument)  

        {  

            string[] pcs = eventArgument.Split('_');  

            PageIndex = int.Parse(pcs[4]);//转到第几页  

            PageCount = int.Parse(pcs[5]);//总共有几页  

  

            if (PageIndexChangeHanlder != null)  

            {  

                PageIndexChangeHanlder(this, PageIndex, PageCount);//触发翻页事件  

            }  

        }  

    }  

 

源码其实例下载:

 

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