.net 分页

转载于 2011-12-14 17:52:52 发布 · 429 阅读

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#.net #output #string

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本文详细阐述了如何实现网页分页导航与翻页逻辑，包括计算总页数、确定当前页左侧和右侧的页码范围，并生成翻页链接。

        int Step = 5;//偏移量 
        int LeftNum = 0;//做界限 
        int RightNum = 0;//右界限 
        string PageUrl = Request.FilePath; 
        int PageCount = (int)Math.Ceiling((double)(ToatalCountRecord) / PageItem); 
        if (CurrentPage - Step  < 1) 
        { 
            LeftNum = 1; 
        } 
        else 
        { 
            LeftNum = CurrentPage - Step; 
        } 
        if (CurrentPage + Step > PageCount) 
        { 
            RightNum = PageCount; 
        } 
        else 
        { 
            RightNum = CurrentPage + Step; 
        } 
        string OutPut = ""; 
        if (CurrentPage > 1) 
        { 
            OutPut += " <a href='" + PageUrl + "?page=" + (CurrentPage - 1) + "'>" + "上一页" + " </a>"; 
        } 
        for (int i = LeftNum; i  <= RightNum; i++) 
        { 
            if (i == CurrentPage) 
            { 
                OutPut += " <font color=red>" + " " +"["+i.ToString() +"]"+ "" + " </font>"; 
            } 
            else 
            { 
                OutPut += " <a href='" + PageUrl + "?page=" + i.ToString() + "'>" + " " +"["+ i.ToString() +"]"+ " " + " </a>"; 
            } 
        } 
        if (CurrentPage  < PageCount) 
        { 
            OutPut += " <a href='" + PageUrl + "?page=" + (CurrentPage + 1) + "'>" + "下一页" + " </a>"; 
        } 
        this.PageInfo.InnerHtml = OutPut; 
    }