简单的分页控件SimplePager,支持datagrid，datalist，repeater
除了第一个乱七八糟的可输入可选择的DropDownList外，这算第二个控件吧，
有空改善一下
使用方法
1、设置分页控件绑定字符串BindControlString的datagrid之类的id
2、在使用页面的Page_Load()里面写上
using System;using System.Web.UI;using System.Web.UI.WebControls;using System.Web;using System.Data;using System.Diagnostics;using System.ComponentModel;using System.Web.UI.Design;using System.Text;using System.Drawing;namespace HMG.WebControls
{
/**//// <summary>
/// 数据提供的委托
/// </summary> public delegate DataTable PagerDataProvider(); 设计期支持（已完成）#region 设计期支持（已完成） /**//// <summary> /// SimplePager的设计期支持 /// </summary> public class SimplePagerDesigner:ControlDesigner { /**//// <summary> /// 设计期的Html /// </summary> /// <returns> 设计期的Html</returns> public override string GetDesignTimeHtml() { SimplePager temp=(SimplePager)this.Component; StringBuilder sb=new StringBuilder(); sb.Append("<div >"); sb.Append(temp.GetDescription()); sb.Append(" "); sb.Append(temp.ButtonStrings.ToString()); sb.Append("<input type='text' style='border:solid 1px black;width:40px'></input>"); sb.Append("<a style='width:40px'>"+temp.ButtonStrings.Go+"</a>"); sb.Append("</div>"); return sb.ToString(); //return base.GetDesignTimeHtml (); } /**//// <summary> /// 默认初始化 /// </summary> /// <param name="component">暂时没有用到</param> public override void Initialize(IComponent component) { base.Initialize (component); } } #endregion 按钮字符提供者，复合属性（已完成）#region 按钮字符提供者，复合属性（已完成） /**//// <summary> /// 按钮字符提供者，复合属性（已完成） /// </summary> [TypeConverter(typeof(ExpandableObjectConverter))] public class ButtonStringProvider { private string pre; private string end; private string first; private string next; private string go; /**//// <summary> /// 重写的ToString /// </summary> /// <returns>首页，尾页，上一页，下一页</returns> public override string ToString() { return first+" | "+end+" | "+pre+" | "+next; } /**//// <summary> /// 默认构造函数 /// </summary> public ButtonStringProvider():this("首页","尾页","上一页","下一页","跳到") { } /**//// <summary> /// 带参数的构造函数 /// </summary> /// <param name="first">首页的Text</param> /// <param name="end">尾页的Text</param> /// <param name="pre">上一页的Text</param> /// <param name="next">下一页的Text</param> /// <param name="go">跳转的Text</param> public ButtonStringProvider(string first,string end,string pre,string next,string go) { this.first=first; this.end=end; this.pre=pre; this.next=next; this.go=go; } /**//// <summary> /// 跳转的Text /// </summary> [NotifyParentProperty(true)] [DefaultValue("跳到")] [Browsable(true)] public string Go { get { return this.go; } set { this.go=value; } } /**//// <summary> /// 下一页的Text /// </summary> [DefaultValue("下一页")] [Browsable(true)] [NotifyParentProperty(true)] public string Next { get { return this.next; } set { this.next=value; } } /**//// <summary> /// 上一页的Text /// </summary> [DefaultValue("上一页")] [Browsable(true)] [NotifyParentProperty(true)] public string Pre { get { return this.pre; } set { this.pre=value; } } /**//// <summary> /// 尾页的Text /// </summary> [DefaultValue("尾页")] [Browsable(true)] [NotifyParentProperty(true)] public string End { get { return this.end; } set { this.end=value; } } /**//// <summary> /// 首页的Text /// </summary> [DefaultValue("首页")] [Browsable(true)] [NotifyParentProperty(true)] public string First { get { return this.first; } set { this.first=value; } } } #endregion /**//// <summary> /// SimplePager 的摘要说明。 /// </summary> [ ParseChildren(true), PersistChildren(false), Designer(typeof(SimplePagerDesigner)) ] [ToolboxBitmapAttribute(typeof(SimplePager), "SimplePager.bmp")] [DefaultProperty("FormatString"), ToolboxData("<{0}:SimplePager runat=\"server\"></{0}:SimplePager>")] public class SimplePager:System.Web.UI.WebControls.WebControl,INamingContainer { /**//// <summary> /// 获取信息描述，比如当前页{0}/{1},总记录数{2} /// </summary> /// <returns>信息描述</returns> public string GetDescription() { return string.Format(this.FormatString,new object[]{this.CurrentPageIndex,this.TotalPages,this.TotalRecordSize}); } /**//// <summary> /// 提供数据源的方法 /// </summary> private PagerDataProvider provider; /**//// <summary> /// 提供数据源的方法 /// </summary> public PagerDataProvider Provider { get { return provider; } set { provider=value; } } 超级链接列#region 超级链接列 /**//// <summary> /// 首页 /// </summary> private System.Web.UI.WebControls.LinkButton lbFirst; /**//// <summary>20 /// 尾页 /// </summary> private LinkButton lbEnd; /**//// <summary> /// 上一页 /// </summary> private LinkButton lbPre; /**//// <summary> /// 下一页 /// </summary> private LinkButton lbNext; /**//// <summary> /// 跳转 /// </summary> private LinkButton lbGo; /**//// <summary> /// 获取当前页 /// </summary> private TextBox tbNum; #endregion 设置各个链接列的字#region 设置各个链接列的字 /**//// <summary> /// 设置所有链接按钮的Text /// </summary> [DesignerSerializationVisibility(DesignerSerializationVisibility.Content),NotifyParentProperty(true)] [PersistenceMode(PersistenceMode.InnerProperty)] public ButtonStringProvider ButtonStrings { get { if(this.buttonStrs==null) { this.buttonStrs=new ButtonStringProvider(); } return this.buttonStrs; } } private ButtonStringProvider buttonStrs=new ButtonStringProvider(); #endregion 字符串#region 字符串 /**//// <summary> /// 格式化字符串 必须包括page {0} of {1} all{2]record /// </summary> private string formatStr="当前页{0}/{1},共{2}条记录"; /**//// <summary> /// 格式化字符串 必须包括page {0} of {1} all{2]record /// </summary> [DefaultValue("当前页{0}/{1},共{2}条记录")] [Browsable(true)] public string FormatString { get { return this.formatStr; } set { if(this.formatStr.IndexOf("{0}")==-1||this.formatStr.IndexOf("{1}")==-1||this.formatStr.IndexOf("{2}")==-1) { throw new ArgumentException("格式字符串必须包括{0},{1},{2}"); } this.formatStr=value; } } /**//// <summary> /// 绑定的控件名称 /// </summary> private string bindControl; /**//// <summary> /// 绑定的控件名称 /// </summary> public string BindControlString { get { return this.bindControl; } set { this.bindControl=value; } } /**//// <summary> /// 绑定的控件 /// </summary> [Browsable(false)] public Control BindedControl { get { //Control sender =this.OwnerPage.FindControl(this.bindControl); this.EnsureChildControls(); Control sender=this.Page.FindControl(this.bindControl); return sender; } } //private string delegateMethod; #endregion /**//// <summary> /// 初始化 /// </summary> /// <param name="e">参数</param> protected override void OnInit(EventArgs e) { //this.BindControl.DataBinding+=new EventHandler(BindControl_DataBinding); base.OnInit (e); } ViewState的属性#region ViewState的属性 /**//// <summary> /// 是否发生需要重新绑定 /// </summary> [DefaultValue(true)] [Browsable(true)] public bool Changed { get { if(ViewState["changed"]==null) { ViewState["changed"]=true; } return Convert.ToBoolean(ViewState["changed"].ToString()); } set { ViewState["changed"]=value; } } /**//// <summary> /// 页记录数大小 /// </summary> [DefaultValue(10)] [Browsable(true)] public int PageSize { get { if(ViewState["pagesize"]==null) { ViewState["pagesize"]=10; } int result=Convert.ToInt32(ViewState["pagesize"]); if(result<1) { throw new ArgumentException("页的大小必须大于1！"); } return result; } set { if(value<1) { throw new ArgumentException("页的大小必须大于1！"); } ViewState["pagesize"]=value; } } /**//// <summary> /// 当前页索引，格式字符串的{0} /// </summary> [DefaultValue(0)] [Browsable(false)] public int CurrentPageIndex { get { if(ViewState["currentpageindex"]==null) { ViewState["currentpageindex"]=1; } int result=Convert.ToInt32(ViewState["currentpageindex"]); if(result<1) { throw new ArgumentException("当前页不得小于1！"); } return result; } set { if(value<1) { throw new ArgumentException("当前页不得小于1！"); } ViewState["currentpageindex"]=value; } } /**//// <summary> /// 记录总数－格式字符串的{2} /// </summary> [DefaultValue(0)] [Browsable(false)] public int TotalRecordSize { get { if(ViewState["totalrecordsize"]==null) { ViewState["totalrecordsize"]=0; } int result=Convert.ToInt32(ViewState["totalrecordsize"]); if(result<0) { throw new ArgumentException("记录数不得小于0！"); } return result; } set { ViewState["totalrecordsize"]=value; } } #endregion /**//// <summary> /// 重写的Render方法 /// </summary> /// <param name="writer">输出流</param> protected override void Render(HtmlTextWriter writer) { writer.AddAttribute(HtmlTextWriterAttribute.Id,this.ClientID); writer.RenderBeginTag(HtmlTextWriterTag.Span); writer.Write(this.GetDescription()); writer.Write(" "); this.lbFirst.RenderControl(writer); writer.Write(" | "); this.lbEnd.RenderControl(writer); writer.Write(" | "); this.lbPre.RenderControl(writer); writer.Write(" | "); this.lbNext.RenderControl(writer); writer.Write(" "); this.tbNum.RenderControl(writer); writer.Write(" "); this.lbGo.RenderControl(writer); writer.RenderEndTag();//Span //base.Render (writer); } /**//// <summary> /// 事件冒泡，暂时没有使用 /// </summary> /// <param name="source">事件源</param> /// <param name="args">参数</param> /// <returns>是否冒泡</returns> protected override bool OnBubbleEvent(object source, EventArgs args) { return base.OnBubbleEvent (source, args); } /**//// <summary> /// 注册控件为需要回传的事件 /// </summary> /// <param name="e"></param> protected override void OnPreRender(EventArgs e) { if(this.Changed) this.BindData(); base.OnPreRender (e); //Page.RegisterRequiresPostBack(this); } /**//// <summary> /// 重写的构造函数 /// </summary> protected override void CreateChildControls() { //base.CreateChildControls (); Controls.Clear(); this.lbFirst=new LinkButton(); this.lbFirst.ID="lbFirst"; lbFirst.Text=this.ButtonStrings.First; this.lbFirst.Click+=new EventHandler(lbFirst_Click); this.Controls.Add(this.lbFirst); this.lbPre=new LinkButton(); this.lbPre.ID="lbPre"; this.lbPre.Text=this.ButtonStrings.Pre; this.lbPre.Click+=new EventHandler(lbPre_Click); this.Controls.Add(this.lbPre); this.lbNext=new LinkButton(); this.lbNext.ID="lbNext"; this.lbNext.Text=this.ButtonStrings.Next; this.lbNext.Click+=new EventHandler(lbNext_Click); this.Controls.Add(this.lbNext); this.lbEnd=new LinkButton(); this.lbEnd.ID="lbEnd"; this.lbEnd.Text=this.ButtonStrings.End; this.lbEnd.Click+=new EventHandler(lbEnd_Click); this.Controls.Add(this.lbEnd); this.tbNum=new TextBox(); this.tbNum.ID="tbNum"; this.tbNum.Width=30; this.tbNum.Style.Add("border","solid 1px black;"); this.tbNum.Text=this.CurrentPageIndex.ToString(); this.Controls.Add(this.tbNum); this.lbGo=new LinkButton(); this.lbGo.ID="lbGo"; this.lbGo.Text=this.ButtonStrings.Go; this.lbGo.Click+=new EventHandler(lbGo_Click); this.Controls.Add(this.lbGo); //this.BindedControl.DataBinding+=new EventHandler(BindControl_DataBinding); } /**//// <summary> /// 默认构造函数 /// </summary> public SimplePager() { // // TODO: 在此处添加构造函数逻辑 // } /**//// <summary> /// 当前页记录起始行 /// </summary> private int StartRow { get { return (this.CurrentPageIndex-1)*this.PageSize; } } /**//// <summary> /// 是否允许数据绑定 /// </summary> [ Browsable(true) ] public bool AllowBinded { get { if (ViewState["allowbinded"] == null) { ViewState["allowbinded"] = false; } return (bool)ViewState["allowbinded"]; } set { ViewState["allowbinded"] = value; } } /**//// <summary> /// 当前页结束的行数 /// </summary> private int EndRow { get { int t=(this.CurrentPageIndex)*this.PageSize-1; return t<this.TotalRecordSize?t+1:this.TotalRecordSize; } } /**//// <summary> /// 总的页数 /// </summary> private int TotalPages { get { int temp=this.TotalRecordSize/this.PageSize; if (temp == 0) return 1; if(this.TotalRecordSize%this.PageSize>0) { temp++; } return temp; } } /**//// <summary> /// 从数据源取的数据筛选出当前页的数据来 /// </summary> /// <returns>新的DataTable</returns> private DataTable PreData() { try { DataTable dt=this.provider(); if(dt!=null) { this.TotalRecordSize=dt.Rows.Count; if(this.TotalPages<this.CurrentPageIndex) { this.CurrentPageIndex=this.TotalPages; } Debug.WriteLine("记录总数:"+this.TotalRecordSize); Debug.WriteLine("起始记录："+this.StartRow); Debug.WriteLine("结束记录："+this.EndRow); DataTable temp=dt.Clone(); for(int i=this.StartRow;i<this.EndRow;i++) { temp.ImportRow(dt.Rows[i]); } return temp; } else { this.lbFirst.Enabled = false; this.lbPre.Enabled = false; this.lbNext.Enabled = false; this.lbEnd.Enabled = false; return null; } } catch(Exception ex) { Debug.WriteLine(ex.ToString()); throw new ArgumentException("提供的数据源不能转化为DataView"); } } /**//// <summary> /// 点击跳转按钮的事件 /// </summary> /// <param name="sender">跳转按钮</param> /// <param name="e">事件参数</param> private void lbGo_Click(object sender, EventArgs e) { try { int newIndex=Convert.ToInt32(this.tbNum.Text); if(newIndex>=1&&newIndex<=this.TotalPages) { this.CurrentPageIndex=newIndex; this.Changed=true; this.BindData(); } else { this.tbNum.Text=this.CurrentPageIndex.ToString(); } } catch { } } /**//// <summary> /// 点击尾页的按钮事件 /// </summary> /// <param name="sender">尾页按钮</param> /// <param name="e">事件参数</param> private void lbEnd_Click(object sender, EventArgs e) { this.CurrentPageIndex=this.TotalPages; this.Changed=true; this.BindData(); } /**//// <summary> /// 点击下一页的按钮事件 /// </summary> /// <param name="sender">下一页按钮</param> /// <param name="e">事件参数</param> private void lbNext_Click(object sender, EventArgs e) { if(this.CurrentPageIndex<this.TotalPages) this.CurrentPageIndex++; this.Changed=true; this.BindData(); } /**//// <summary> /// 点击前一页的按钮事件 /// </summary> /// <param name="sender">前一页按钮</param> /// <param name="e">事件参数</param> private void lbPre_Click(object sender, EventArgs e) { if(this.CurrentPageIndex>1) this.CurrentPageIndex--; this.Changed=true; this.BindData(); } /**//// <summary> /// 点击首页发生的事件 /// </summary> /// <param name="sender">首页按钮</param> /// <param name="e">事件参数</param> private void lbFirst_Click(object sender, EventArgs e) { this.CurrentPageIndex=1; this.Changed=true; this.BindData(); } /**//// <summary> /// 控件的数据绑定 /// </summary> private void BindData() { if (!this.AllowBinded) { this.lbFirst.Enabled = false; this.lbPre.Enabled = false; this.lbNext.Enabled = false; this.lbEnd.Enabled = false; this.lbGo.Enabled = false; return; } else if(this.Changed) { this.lbGo.Enabled = true; Control sender = this.BindedControl; try { if (sender is DataGrid) { DataGrid dg = (DataGrid)sender; DataTable dt = this.PreData(); if (dt != null) { dg.DataSource = dt; dg.DataBind(); } else { return; } } else if (sender is Repeater) { Repeater rp = (Repeater)sender; DataTable dt = this.PreData(); if (dt != null) { rp.DataSource = dt; rp.DataBind(); } else { return; } } else if (sender is DataList) { DataList list = (DataList)sender; DataTable dt = this.PreData(); if (dt != null) { list.DataSource = dt; list.DataBind(); } else { return; } } else { throw new ArgumentException("绑定的控件仅支持DataGrid,DataList,Repeater"); } if(this.TotalPages==1) { this.lbFirst.Enabled = false; this.lbPre.Enabled = false; this.lbNext.Enabled = false; this.lbEnd.Enabled = false; } else if (this.CurrentPageIndex == this.TotalPages) { this.lbFirst.Enabled = true; this.lbPre.Enabled = true; this.lbNext.Enabled = false; this.lbEnd.Enabled = false; } else if (this.CurrentPageIndex == 1) { this.lbFirst.Enabled = false; this.lbPre.Enabled = false; this.lbNext.Enabled = true; this.lbEnd.Enabled = true; } else if (this.CurrentPageIndex > 1 && this.CurrentPageIndex < this.TotalPages) { this.lbFirst.Enabled = true; this.lbPre.Enabled = true; this.lbNext.Enabled = true; this.lbEnd.Enabled = true; } this.tbNum.Text = this.CurrentPageIndex.ToString(); this.Changed=false; } catch { throw new ArgumentException("请提供一个可以转化为dataview的数据源！"); } } } }
}
代码如下：
