ASP.NET控件开发之-------自定义分页控件
本分页控件共四个文件,代码全部折叠,请打开查看,代码如下:
1.events.cs
events.cs
1 using System; 2 using System.Collections.Generic; 3 using System.Text; 4 using System.Web.UI.WebControls; 5 using System.Web.UI.HtmlControls; 6 using System.Web.UI; 7 using System.ComponentModel; 8 9 10 namespace Yangpu.Web.ExControls 11 { 12 /// <summary> 13 /// ASP.NET WebForm 分页控件 14 /// <remarks> 15 /// <author>作者：杨璞</author> 16 /// <CreateDataTime>创建日期：2012-09-26</CreateDataTime> 17 /// <LastModefyTime>修改日期：2012-09-26</LastModefyTime> 18 /// <WeiboAddress>新浪微博地址： http://weibo.com/yangpu1983</WeiboAddress> 19 /// </remarks> 20 /// </summary> 21 public partial class Pager:IPostBackDataHandler,IPostBackEventHandler 22 { 23 private readonly static object EventPageIndexChanged = new object(); 24 25 [Description("页序号改变事件\n作者：杨璞\n创建日期：2012-09-26\n修改日期：2012-09-26\n新浪微博地址： http://weibo.com/yangpu1983")] 26 /// <summary> 27 /// 页序号改变事件 28 /// <author>作者：杨璞</author> 29 /// <CreateDataTime>创建日期：2012-09-26</CreateDataTime> 30 /// <LastModefyTime>修改日期：2012-09-26</LastModefyTime> 31 /// <WeiboAddress>新浪微博地址： http://weibo.com/yangpu1983</WeiboAddress> 32 /// </summary> 33 public event PageIndexChangedEventHandler PageIndexChanged 34 { 35 add { Events.AddHandler(EventPageIndexChanged, value); } 36 remove { Events.RemoveHandler(EventPageIndexChanged, value); } 37 } 38 39 protected virtual void OnPageIndexChanged(PageIndexChangedEventArgs e) 40 { 41 PageIndexChangedEventHandler handlers = (PageIndexChangedEventHandler)Events[EventPageIndexChanged]; 42 if (handlers != null) 43 { 44 handlers(this, e); 45 } 46 } 47 48 public void RaisePostBackEvent(string eventArgument) 49 { 50 PageIndexChangedEventArgs e = new PageIndexChangedEventArgs(); 51 switch (eventArgument) 52 { 53 case "first": this.PageIndex = 0; break; 54 case "previouse": this.PageIndex--; break; 55 case "next": this.PageIndex++; break; 56 case "last": this.PageIndex = this.PageCount - 1; break; 57 case "SelectedIndexChanged": break; 58 default: this.PageIndex = int.Parse(eventArgument); break; 59 } 60 e.PageIndex = this.PageIndex; 61 OnPageIndexChanged(e); 62 } 63 64 public bool LoadPostData(string postDataKey, System.Collections.Specialized.NameValueCollection postCollection) 65 { 66 string strOldValue = this.PageIndex.ToString(); 67 string strNewValue = postCollection[this.UniqueID]; 68 if (strOldValue == null || (strOldValue != null && !strOldValue.Equals(strNewValue))) 69 { 70 this.PageIndex = int.Parse(strNewValue); return true; 71 } 72 return false; 73 } 74 75 public void RaisePostDataChangedEvent() 76 { 77 PageIndexChangedEventArgs e = new PageIndexChangedEventArgs(); 78 e.PageIndex = this.PageIndex; 79 OnPageIndexChanged(e); 80 } 81 82 } 83 }
2.Pager.cs
Pager.cs
using System; using System.Collections.Generic; using System.Text; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using System.Web.UI; using System.ComponentModel; namespace Yangpu.Web.ExControls { [DefaultProperty("PageCount")] [DefaultEvent("PageIndexChanged")] [ParseChildren(false)] [PersistChildren(false)] [ToolboxData("<{0}:Pager runat=server></{0}:Pager>")] [Description("ASP.NET WebForm 分页控件\n作者：杨璞\n创建日期：2012-09-26\n修改日期：2012-09-26\n新浪微博地址： http://weibo.com/yangpu1983")] /// <summary> /// ASP.NET WebForm 分页控件 /// <remarks> /// <author>作者：杨璞</author> /// <CreateDataTime>创建日期：2012-09-26</CreateDataTime> /// <LastModefyTime>修改日期：2012-09-26</LastModefyTime> /// <WeiboAddress>新浪微博地址： http://weibo.com/yangpu1983</WeiboAddress> /// </remarks> /// </summary> public partial class Pager:Control { protected override void Render(HtmlTextWriter writer) { base.Render(writer); switch (this.RenderStyle) { case RenderType.Link: { ////第一页 //writer.AddAttribute(HtmlTextWriterAttribute.Href, Page.ClientScript.GetPostBackClientHyperlink(this, "first")); //writer.AddAttribute(HtmlTextWriterAttribute.Style, "padding:3px 3px;margin:3px;"); //if (this.PageIndex == 0) // writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "false"); //writer.RenderBeginTag(HtmlTextWriterTag.A); //writer.Write("第一页"); //writer.RenderEndTag(); //上一页 writer.AddAttribute(HtmlTextWriterAttribute.Href, Page.ClientScript.GetPostBackClientHyperlink(this, "previouse")); writer.AddAttribute(HtmlTextWriterAttribute.Style, "padding:3px 3px;margin:3px;font-size:14px;"); if (this.PageIndex == 0) writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "false"); writer.RenderBeginTag(HtmlTextWriterTag.A); writer.Write("上一页"); writer.RenderEndTag(); //链接 for (int i = 0; i < this.PageCount; i++) { writer.AddAttribute(HtmlTextWriterAttribute.Href, Page.ClientScript.GetPostBackClientHyperlink(this, i.ToString())); writer.AddAttribute(HtmlTextWriterAttribute.Style, "padding:3px 3px;margin:3px;font-size:14px;"); if (i == this.PageIndex) writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "false"); writer.RenderBeginTag(HtmlTextWriterTag.A); writer.Write(i + 1); writer.RenderEndTag(); } //下一页 writer.AddAttribute(HtmlTextWriterAttribute.Href, Page.ClientScript.GetPostBackClientHyperlink(this, "next")); writer.AddAttribute(HtmlTextWriterAttribute.Style, "padding:3px 3px;margin:3px;font-size:14px;"); if (this.PageCount == 0 || this.PageIndex == this.PageCount - 1) writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "false"); writer.RenderBeginTag(HtmlTextWriterTag.A); writer.Write("下一页"); writer.RenderEndTag(); ////最末页 //writer.AddAttribute(HtmlTextWriterAttribute.Href, Page.ClientScript.GetPostBackClientHyperlink(this, "last")); //writer.AddAttribute(HtmlTextWriterAttribute.Style, "padding:3px 3px;margin:3px;"); //if (this.PageCount == 0 || this.PageIndex == this.PageCount - 1) // writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "false"); //writer.RenderBeginTag(HtmlTextWriterTag.A); //writer.Write("最末页"); //writer.RenderEndTag(); } break; case RenderType.Button: { writer.RenderBeginTag(HtmlTextWriterTag.Label); writer.Write(string.Format("共 {3} 条记录,每页显示 {1} 条, 当前为 {0}/{2} 页", this.PageIndex + 1, this.PageSize, this.PageCount,this.RowCount)); writer.RenderEndTag(); //第一页 writer.AddAttribute(HtmlTextWriterAttribute.Value, "第一页"); writer.AddAttribute(HtmlTextWriterAttribute.Type, "Submit"); if (this.PageIndex == 0) writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "false"); writer.AddAttribute(HtmlTextWriterAttribute.Onclick, Page.ClientScript.GetPostBackClientHyperlink(this, "first")); writer.RenderBeginTag(HtmlTextWriterTag.Input); writer.RenderEndTag(); //上一页 writer.AddAttribute(HtmlTextWriterAttribute.Value, "上一页"); writer.AddAttribute(HtmlTextWriterAttribute.Type, "Submit"); if (this.PageIndex == 0) writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "false"); writer.AddAttribute(HtmlTextWriterAttribute.Onclick, Page.ClientScript.GetPostBackClientHyperlink(this, "previouse")); writer.RenderBeginTag(HtmlTextWriterTag.Input); writer.RenderEndTag(); //下一页 writer.AddAttribute(HtmlTextWriterAttribute.Value, "下一页"); writer.AddAttribute(HtmlTextWriterAttribute.Type, "Submit"); if (this.PageCount == 0 || this.PageIndex == this.PageCount - 1) writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "false"); writer.AddAttribute(HtmlTextWriterAttribute.Onclick, Page.ClientScript.GetPostBackClientHyperlink(this, "next")); writer.RenderBeginTag(HtmlTextWriterTag.Input); writer.RenderEndTag(); //最末页 writer.AddAttribute(HtmlTextWriterAttribute.Value, "最末页"); writer.AddAttribute(HtmlTextWriterAttribute.Type, "Submit"); if (this.PageCount == 0 || this.PageIndex == this.PageCount - 1) writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "false"); writer.AddAttribute(HtmlTextWriterAttribute.Onclick, Page.ClientScript.GetPostBackClientHyperlink(this, "last")); writer.RenderBeginTag(HtmlTextWriterTag.Input); writer.RenderEndTag(); } break; case RenderType.DropDownList: { writer.RenderBeginTag(HtmlTextWriterTag.Label); writer.Write(string.Format("共 {3} 条记录,每页显示 {1} 条, 当前为 {0}/{2} 页", this.PageIndex + 1, this.PageSize, this.PageCount,this.RowCount)); writer.RenderEndTag(); // 下拉列表 writer.AddAttribute(HtmlTextWriterAttribute.Onchange, Page.ClientScript.GetPostBackClientHyperlink(this, "SelectedIndexChanged")); writer.AddAttribute(HtmlTextWriterAttribute.Name, UniqueID); writer.RenderBeginTag(HtmlTextWriterTag.Select); for (int i = 0; i < this.PageCount; i++) { writer.AddAttribute(HtmlTextWriterAttribute.Value, i.ToString()); if (i == this.PageIndex) writer.AddAttribute(HtmlTextWriterAttribute.Selected, "true"); writer.RenderBeginTag(HtmlTextWriterTag.Option); writer.Write(string.Format("第{0}页", i + 1)); writer.RenderEndTag(); } writer.RenderEndTag(); } break; } } } }
3.Properties.cs
Properties.cs
using System; using System.Collections.Generic; using System.Text; using System.ComponentModel; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; namespace Yangpu.Web.ExControls { /// <summary> /// ASP.NET WebForm 分页控件 /// <remarks> /// <author>作者：杨璞</author> /// <CreateDataTime>创建日期：2012-09-26</CreateDataTime> /// <LastModefyTime>修改日期：2012-09-26</LastModefyTime> /// <WeiboAddress>新浪微博地址： http://weibo.com/yangpu1983</WeiboAddress> /// </remarks> /// </summary> public partial class Pager { [Category("数据"), DefaultValue(0),Description("每页显示数据条数\n作者：杨璞\n创建日期：2012-09-26\n修改日期：2012-09-26\n新浪微博地址： http://weibo.com/yangpu1983")] /// <summary> /// 每页显示数据条数 /// <author>作者：杨璞</author> /// <CreateDataTime>创建日期：2012-09-26</CreateDataTime> /// <LastModefyTime>修改日期：2012-09-26</LastModefyTime> /// <WeiboAddress>新浪微博地址： http://weibo.com/yangpu1983</WeiboAddress> /// </summary> public int PageSize { get { if (ViewState["PageSize"] == null) ViewState["PageSize"] = 0; return Convert.ToInt32(ViewState["PageSize"]); } set { ViewState["PageSize"] = value; } } [Category("数据"), DefaultValue(0), Description("总记录条数\n作者：杨璞\n创建日期：2012-09-26\n修改日期：2012-09-26\n新浪微博地址： http://weibo.com/yangpu1983")] /// <summary> /// 每页显示数据条数 /// <author>作者：杨璞</author> /// <CreateDataTime>创建日期：2012-09-26</CreateDataTime> /// <LastModefyTime>修改日期：2012-09-26</LastModefyTime> /// <WeiboAddress>新浪微博地址： http://weibo.com/yangpu1983</WeiboAddress> /// </summary> public int RowCount { get { if (ViewState["RowCount"] == null) ViewState["RowCount"] = 0; return Convert.ToInt32(ViewState["RowCount"]); } set { ViewState["RowCount"] = value; } } [Category("数据"),DefaultValue(0), Description("页索引\n作者：杨璞\n创建日期：2012-09-26\n修改日期：2012-09-26\n新浪微博地址： http://weibo.com/yangpu1983")] /// <summary> /// 页索引 /// <author>作者：杨璞</author> /// <CreateDataTime>创建日期：2012-09-26</CreateDataTime> /// <LastModefyTime>修改日期：2012-09-26</LastModefyTime> /// <WeiboAddress>新浪微博地址： http://weibo.com/yangpu1983</WeiboAddress> /// </summary> public int PageIndex { get { if (ViewState["PageIndex"] == null) ViewState["PageIndex"] = 0; return Convert.ToInt32(ViewState["PageIndex"]); } set { ViewState["PageIndex"] = value; } } [Category("外观"), DefaultValue(1), Description("显示样式\n作者：杨璞\n创建日期：2012-09-26\n修改日期：2012-09-26\n新浪微博地址： http://weibo.com/yangpu1983")] public RenderType RenderStyle { get { if (ViewState["RenderStyle"] == null) ViewState["RenderStyle"] = RenderType.Link; return (RenderType)ViewState["RenderStyle"]; } set { ViewState["RenderStyle"] = value; } } [Category("数据"), Description("总页数\n作者：杨璞\n创建日期：2012-09-26\n修改日期：2012-09-26\n新浪微博地址： http://weibo.com/yangpu1983")] /// <summary> /// 总页数 /// <author>作者：杨璞</author> /// <CreateDataTime>创建日期：2012-09-26</CreateDataTime> /// <LastModefyTime>修改日期：2012-09-26</LastModefyTime> /// <WeiboAddress>新浪微博地址： http://weibo.com/yangpu1983</WeiboAddress> /// </summary> public int PageCount { get { if (ViewState["PageCount"] == null) if (this.PageSize != 0) ViewState["PageCount"] = this.RowCount % this.PageSize == 0 ? this.RowCount / this.PageSize : (this.RowCount / this.PageSize) + 1; else ViewState["PageCount"] = 0; return Convert.ToInt32(ViewState["PageCount"]); } set { ViewState["PageCount"] = value; } } } }
4.PagerEventHandler.cs
PagerEventHandler.cs
using System; using System.Collections.Generic; using System.Text; using System.ComponentModel; namespace Yangpu.Web.ExControls { /// <summary> /// 分页控件事件委托原型 /// <author>作者：杨璞</author> /// <CreateDataTime>创建日期：2012-09-26</CreateDataTime> /// <LastModefyTime>修改日期：2012-09-26</LastModefyTime> /// <WeiboAddress>新浪微博地址： http://weibo.com/yangpu1983</WeiboAddress> /// </summary> /// <param name="sender">事件源对象</param> /// <param name="e">分页控件事件处理参数</param> public delegate void PageIndexChangedEventHandler(object sender, PageIndexChangedEventArgs e); /// <summary> /// 分页控件呈现模式 /// </summary> public enum RenderType { /// <summary> /// 链接模式 /// </summary> Link = 1, /// <summary> /// 按钮模式 /// </summary> Button = 2, /// <summary> /// 下拉列表模式 /// </summary> DropDownList = 3 } /// <summary> /// 分页控件事件处理参数类 /// <author>作者：杨璞</author> /// <CreateDataTime>创建日期：2012-09-26</CreateDataTime> /// <LastModefyTime>修改日期：2012-09-26</LastModefyTime> /// <WeiboAddress>新浪微博地址： http://weibo.com/yangpu1983</WeiboAddress> /// </summary> public class PageIndexChangedEventArgs : EventArgs { public int PageIndex { get; set; } } }