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

 

 

折叠 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:

 

本地下载