C#自己写的一个自定义分页控件

C#自己写的一个自定义分页控件（源码下载，没有DEMO）

分页以前一直是用第三方分页控件AspNetPager.dll，使用起来也挺方便的，就是样式设置起来感觉不是很好，于是经理决定我们自己做一个分页控件，这个任务就交到我的手上。这个自定义分页控件是模仿58同城的分页及结合我们现在项目的需要写的。感觉比较实用，没什么亮点。

　　其实分页控件也没啥，就是生成相关的HTML代码，你需要啥HTML代码，用你的代码生成就是了，不管是AspNetPager.dll还是58同城也都是生成分页相关的HTML代码，其实就是一堆a标签，点分页的时候，分页控件所在的页面会刷新。

using System.Text; using System.Web; using System.Web.UI; using System.ComponentModel; using System.Collections.Generic; using System.Web.UI.WebControls; //自定义分页控件 namespace ObjectCommon.Libary.Component { [ToolboxData("<{0}:PagingControl runat=\"server\"></{0}:PagingControl>"), DefaultProperty("")] public class PagingControl : Literal { #region 分页属性 private int pageSize = 10; public int PageSize { set { if (value > 0) { pageSize = value; } } get { return pageSize; } } private int pageIndex = 1; public int PageIndex { set { if (value > 0) { pageIndex = value; } } get { return pageIndex; } } public int RecordCount { set; get; } private int PageCount = 0; //分页参数 private string paraName = "page"; public string ParaName { set { if (value != null && value.Trim() != "") { paraName = value.Trim(); } } get { return paraName; } } #endregion #region Css //分页控件的样式 public string CssClass { set; get; } //上一页样式 public string CssPrev { set; get; } //下一页样式 public string CssNext { set; get; } //当前页样式 public string CssCurrent { set; get; } //首页样式 public string CssFirst { set; get; } //尾页样式 public string CssLast { set; get; } //其它页样式 public string CssOther { set; get; } #endregion #region Img //首页图片 public string ImgFirst { set; get; } //上一页页图片 public string ImgPrev { set; get; } //下一页页图片 public string ImgNext { set; get; } //尾页 public string ImgLast { set; get; } #endregion // A标签的HRef private string ATargetHref { set; get; } //获取paraname之外的请求参数 private void GetUrl() { HttpContext ctx = HttpContext.Current; string hostName ="http://"+ ctx.Request.Url.Host + ":" + ctx.Request.Url.Port ; string url = ctx.Request.Url.ToString().Substring(hostName.Length).Split('?')[0] + "?"; StringBuilder query = new StringBuilder(url); foreach (string key in ctx.Request.QueryString) { if (key!=null && key.ToLower() != this.ParaName) { query.Append(string.Format("{0}={1}&", key, ctx.Request.QueryString[key])); } } this.ATargetHref = query.ToString(); } private string GetUrl(int pageIndex) { return string.Format("{0}{1}={2}", this.ATargetHref,this.paraName, pageIndex); } //初始化属性 private void Initializtion() { GetUrl(); this.PageCount = (this.RecordCount - 1) / this.PageSize + 1; if (!string.IsNullOrEmpty(HttpContext.Current.Request[this.ParaName])) { this.PageIndex = int.Parse(HttpContext.Current.Request[this.ParaName]); } } //生成控件 private void LoadControl(List<Tag> divPaging) { if (divPaging == null || divPaging.Count == 0) { this.Text = null; return; } StringBuilder sb = new StringBuilder(256); if (this.CssClass == null || this.CssClass.Trim() == "") { sb.Append("<div>"); } else { sb.Append(string.Format("<div class='{0}'>", this.CssClass)); } for (int i = 0; i < divPaging.Count;i++) { if (divPaging[i] == null) { sb.Append(GetCurrentPage()); } else { sb.Append(divPaging[i].ToString()); } } sb.Append("</div>"); this.Text = sb.ToString(); } private string GetCurrentPage() { if (this.CssCurrent == null || this.CssCurrent.Trim() == "") { return string.Format("<span>{0}</span>", this.PageIndex); } else { return string.Format("<span class={0}>{1}</span>", this.CssCurrent, this.PageIndex); } } /// <summary> /// 加载控件 /// </summary> public void LoadControl() { if (this.RecordCount<=this.PageSize) { this.Text = null; } else { Initializtion(); LoadControl(AddATarget()); } } #region 创建标签 private Tag CreateATarget(string img,string css,int pageIndex,string content) { Tag a = new Tag(); a.HRef = GetUrl(pageIndex); if (img == null || img.Trim() == "") { a.InnerHtml = content; } else { a.InnerHtml = string.Format("<img src={0}/>",img); } if (css != null && css.Trim() != "") { a.CssClass = css; } return a; } #endregion // 向集合中添加标签 private List<Tag> AddATarget() { List<Tag> divPaging = new List<Tag>(); if (this.PageIndex > 1) { divPaging.Add(CreateATarget(this.ImgFirst, this.CssFirst, 1, "首页"));//添加首页 divPaging.Add(CreateATarget(this.ImgPrev, this.CssPrev, this.PageIndex - 1, "上一页"));//添加上一页 } int end = this.PageIndex + 5; if (end < 11) { end = 11; } if (end > this.PageCount) { end = this.PageCount; } int start = end - 10 > 0 ? end - 10 : 1; for (int i = start; i <= end; i++) { if (i == this.PageIndex) { divPaging.Add(null); } else { divPaging.Add(CreateATarget(null, this.CssOther, i, i.ToString())); } } if (this.PageIndex < this.PageCount) { divPaging.Add(CreateATarget(this.ImgNext, this.CssNext, this.PageIndex + 1, "下一页"));//添加下一页 divPaging.Add(CreateATarget(this.ImgLast, this.CssLast, this.PageCount, "尾页"));//添加尾页 } return divPaging; } // 标签实体 private class Tag { //链接 public string HRef { set; get; } //链接显示的内容 public string InnerHtml { set; get; } //样式 public string CssClass { set; get; } public override string ToString() { if (this.CssClass != null && this.CssClass.Trim() != "") { this.CssClass = string.Format(" class='{0}'", this.CssClass); } return string.Format("<a href='{0}'{1}>{2}</a>", this.HRef, this.CssClass, this.InnerHtml); } } } }