在做项目的过程中，最初采用Datagrid的默任的分页方式分页，后来发现对于大的数据量速度很慢，NET进程占用系统资源也很大，后来写了个分页的存储过程，每次取数据都只取当前页的，分页是分好了，但是发现翻页就没那么方便了，于是自己写了个简单的分页控件，代码如下(编译以后直接形成dll就可以用)。
程序代码：
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
namespace PageInfoControl
{
/// <summary>
/// WebCustomControl1 的摘要说明。
/// </summary>
[DefaultProperty("TotalRecord"),
ToolboxData("<{0}:PageInfo runat=server></{0}:PageInfo>")]
public class PageInfo : System.Web.UI.WebControls.WebControl,IPostBackEventHandler
{
#region Construct method
/// <summary>
/// 构造函数
/// </summary>
public PageInfo():base(HtmlTextWriterTag.Div)
{
}
#endregion
#region Variables and Constants
public event EventHandler ChangePageClick;
private string _BarBackGroundColor = "#F1F1F1";
private string _BarLinkColor = "Navy";
private string _BarCurrentColor = "#EEEEEE";
private int _TotalRecord = 0;
private int _TotalPage = 0;
private int _PageSize = 0;
private int _CurrentPageIndex = 1;
private int _ItemSize = 10;
#endregion
#region Properties
[
Description("分页条背景色"),
Bindable(true),
Category("Appearance"),
DefaultValue("#F1F1F1")
]
public string BarBackGroundColor
{
get{return _BarBackGroundColor;}
set{_BarBackGroundColor = value;}
}
[
Description("分页条带链接数字颜色"),
Bindable(true),
Category("Appearance"),
DefaultValue("Navy")
]
public string BarLinkColor
{
get{return _BarLinkColor;}
set{_BarLinkColor = value;}
}
[
Description("分页条当前页数字颜色"),
Bindable(true),
Category("Appearance"),
DefaultValue("#EEEEEE")
]
public string BarCurrentColor
{
get{return _BarCurrentColor;}
set{_BarCurrentColor = value;}
}
[
Description("总记录数"),
Bindable(false),
Category("Behavior"),
DefaultValue(0)
]
public int TotalRecord
{
get{return _TotalRecord;}
set
{
foreach(char c in System.Convert.ToString(value))
{
if (!Char.IsNumber(c))
{
_TotalRecord = 0;
break;
}
}
_TotalRecord = value;
}
}
[
Description("每页显示记录数"),
Bindable(true),
Category("Behavior"),
DefaultValue(0)
]
public int PageSize
{
get{return _PageSize;}
set
{
foreach(char c in System.Convert.ToString(value))
{
if (!Char.IsNumber(c))
{
_PageSize = 0;
break;
}
}
_PageSize = value;
}
}
[
Description("总页数"),
Bindable(true),
Category("Behavior"),
DefaultValue(0)
]
public int TotalPage
{
get{return _TotalPage;}
}
[
Description("数字规格"),
Bindable(true),
Category("Behavior"),
DefaultValue(10)
]
public int ItemSize
{
get{return _ItemSize;}
set
{
foreach(char c in System.Convert.ToString(value))
{
if (!Char.IsNumber(c))
{
_ItemSize = 10;
break;
}
}
_ItemSize = value;
}
}
[
Description("当前页值"),
Bindable(true),
Category("Behavior"),
DefaultValue(1)
]
public int CurrentPageIndex
{
get{return _CurrentPageIndex;}
set{_CurrentPageIndex = value;}
}
#endregion
//定义Div的样式
protected override void AddAttributesToRender(HtmlTextWriter writer)
{
writer.AddStyleAttribute("White-space","nowrap");
writer.AddStyleAttribute("Padding-Top","2px");
writer.AddStyleAttribute("Padding-Bottom","2px");
writer.AddStyleAttribute("Width",Width.ToString());
writer.AddStyleAttribute("Height",Height.ToString());
base.AddAttributesToRender (writer);
}
protected virtual void OnPageChangeClick(EventArgs e)
{
if (ChangePageClick != null)
{
ChangePageClick(this, e);
}
}
public void RaisePostBackEvent(string eventArgument)
{
int PageIndex = int.Parse(eventArgument);
this._CurrentPageIndex = PageIndex;
OnPageChangeClick(new EventArgs());
}
/// <summary>
/// 将此控件呈现给指定的输出参数。
/// </summary>
/// <param name="output"> 要写出到的 HTML 编写器 </param>
protected override void RenderContents(HtmlTextWriter output)
{
this._TotalPage = ((this.TotalRecord / PageSize) * this.PageSize == this.TotalRecord)?(this.TotalRecord / this.PageSize):((this.TotalRecord / this.PageSize) + 1);
int BeginRecord = (this.CurrentPageIndex - 1) * this.PageSize + 1;
int EndRecord = this.CurrentPageIndex * this.PageSize;
EndRecord = (EndRecord>this.TotalRecord)?this.TotalRecord:EndRecord;
string PageInfo = "[共<font color=#CC0000>"+this.TotalPage.ToString()+"</font>页/当前第<font color=#CC0000>"+this.CurrentPageIndex.ToString()+"</font>页 共<font color=#CC0000>"+TotalRecord.ToString()+"</font>条记录,当前记录数<font color=#CC0000>"+BeginRecord.ToString()+"</font>到<font color=#CC0000>"+EndRecord.ToString()+"</font>]";
string PageListStr = "";
string PageIndexColor = "#0000C0";
int SingleNumber = this.TotalPage - (TotalPage/ItemSize) * ItemSize; //得到分页后的尾数(比如：总共58页，按10页规格显示，则尾数为8)
int IntPageForMax = (this.CurrentPageIndex - 1) / ItemSize;
int MinInt = (1 + ItemSize * IntPageForMax);
int MaxInt = ((IntPageForMax + 1) * ItemSize)>TotalPage?TotalPage:((IntPageForMax + 1) * ItemSize);
if(this.TotalRecord == 0 || this.TotalPage == 0)
{
PageListStr = "<font color="+PageIndexColor+">0</font>";
PageListStr = PageListStr + " [共<font color=#CC0000>0</font>页/当前第<font color=#CC0000>0</font>页 共<font color=#CC0000>0</font>条记录,当前记录数<font color=#CC0000>0</font>到<font color=#CC0000>0</font>]";
output.Write(PageListStr);
}
else
{
if(this.TotalPage <= this.ItemSize)
{
for(int i = 1;i <= TotalPage;i++)
{
PageIndexColor = CurrentPageIndex==i?"#CC0000":"#0000C0";
if(CurrentPageIndex == i)
PageListStr = PageListStr + " <a title='当前为第『"+i+"』页' href='#' id=\"" + this.UniqueID + "\"><font color="+PageIndexColor+">"+i.ToString()+"</font></a>";
else
PageListStr = PageListStr + " <a title='点击转到第『"+i+"』页' id=\"" + this.UniqueID + "\" href=\"javascript:" + Page.GetPostBackEventReference(this,i.ToString()) +"\"><font color="+PageIndexColor+">"+i.ToString()+"</font></a>";
}
PageListStr = PageListStr ==""?"<font color="+PageIndexColor+">0</font>":PageListStr;
PageListStr = PageListStr + " "+PageInfo;
output.Write(PageListStr);
}
else
{
for(int i = MinInt;i <= MaxInt;i++)
{
PageIndexColor = CurrentPageIndex==i?"#CC0000":"#0000C0";
if(CurrentPageIndex == i)
PageListStr = PageListStr + " <a title='当前为第『"+i+"』页' href='#' id=\"" + this.UniqueID + "\"><font color="+PageIndexColor+">"+i.ToString()+"</font></a>";
else
PageListStr = PageListStr + " <a title='点击转到第『"+i+"』页' id=\"" + this.UniqueID + "\" href=\"javascript:" + Page.GetPostBackEventReference(this,i.ToString()) +"\"><font color="+PageIndexColor+">"+i.ToString()+"</font></a>";
}
//当当前页数小于ItemSize且总的页数大于ItemSize时
if(CurrentPageIndex <= ItemSize && TotalPage > ItemSize)
{
PageListStr = PageListStr + " <a id=\"" + this.UniqueID + "\" title='点击转到第『"+System.Convert.ToString(ItemSize + 1)+"』页' href=\"javascript:" + Page.GetPostBackEventReference(this,System.Convert.ToString(ItemSize + 1)) +"\">>></a>";
}
//当当前页数大于ItemSize，且总的页数减去当前页数大于等于尾数值页数时
if(this.CurrentPageIndex > ItemSize && (TotalPage - this.CurrentPageIndex) >= SingleNumber)
{
int MultiMinPageIndex = (IntPageForMax * ItemSize);
int MultiMaxPageIndex = ((IntPageForMax+1) * ItemSize) + 1;
PageListStr = "<a id=\"" + this.UniqueID + "\" title='点击转到第『"+MultiMinPageIndex+"』页' href=\"javascript:" + Page.GetPostBackEventReference(this,MultiMinPageIndex.ToString()) +"\"><<</a>" + PageListStr.Trim() + "<a id=\"" + this.UniqueID + "\" title='点击转到第『"+MultiMaxPageIndex+"』页' href=\"javascript:" + Page.GetPostBackEventReference(this,MultiMaxPageIndex.ToString()) +"\">>></a>";
}
//当当前页数大于ItemSize，且总的页数减去当前页数大于等于尾数值页数时
if(CurrentPageIndex > 10 && (TotalPage - CurrentPageIndex) < SingleNumber)
{
int MultiMinPageIndex = (IntPageForMax * ItemSize);
PageListStr = "<a id=\"" + this.UniqueID + "\" title='点击转到第『"+MultiMinPageIndex+"』页' href=\"javascript:" + Page.GetPostBackEventReference(this,MultiMinPageIndex.ToString()) +"\"><<</a>" + PageListStr.Trim();
}
PageListStr = PageListStr ==""?"<font color="+PageIndexColor+">0</font>":PageListStr;
PageListStr = PageListStr + " "+PageInfo;
output.Write(PageListStr);
}
}
base.RenderContents(output);
}
}
}
控件中有几个相关的属性，在使用的时候，只需要指定：TotalRecord(总记录数)、PageSize(每页的数据记录数)、CurrentPageIndex(当前页面值)、ItemSize(分页条显示页面值的规格)
控件中有个ChangePageClick事件，可以利用“控件ID.CurrentPageIndex”属性来获取当前页面值。
