数字分页类

//分页通用类

public class Pager

{

　　private int pageIndex;

　　public int PageIndex

　　{

　　get; set;

　　}

private int currentPageCount;

public int CurrentPageCount

{

　　get;set;

}

protected string sbHtml = "";

if(currentPageCount <= 1)//如果就一夜，不显示分页

{

　　return;

}

int start = currentPage -5;//表示起始位置。。。一页有十条

if(start <=1)

{

　　start = 1;

}

　　int end = start +9;

if(end >currentPageCount)

{

　　end = currentPageCount;

start = end -9;

}

StringBuilder sb = new StringBuilder();

if(currentPage > 1)

{

sb.Append(string.Format("<a href = ?page={0}>&nbsp;上一页&nbsp;</a>"，currentPage－１))

}

for(int i = start;i<= end;i++)

{

　　if(i == currentPage)//等于当前页

{

　　sb.Append("&nbsp" + i + "&nbsp");

}

else

{

　　sb.Append(string.Format("<a href=?page={0}>&nbsp" + i + "nbsp;</a>));

}

if(currentPage <currentCount)

{

sb.Append(string.Format("<a href = ?page={0}>&nbsp;下一页&nbsp;</a>"，currentPage＋１))

}

sbHtml = sb.ToString();

}

}

//分页通用类2

public static string GetPageHTML(int recordTotalCount, int pageIndex,int perSize)
{
if (recordTotalCount <= perSize)
{
return "";
}
StringBuilder strBuilder = new StringBuilder();
string attr = "";
int pagecount = 0;//当前页面的总层数
int floorcount = 0;//分页的总层数
int currentLastPage = 0;//当前最后一页的页码，用来保存最后一页的号码
//总页数
// int pageTotalCount = recordTotalCount / 10 + 1;
int pageTotalCount = recordTotalCount % perSize == 0 ? recordTotalCount / perSize : recordTotalCount / perSize + 1;
// strBuilder.Append("<div class="badoo">");
attr = pageIndex == 1 ? "visible="" + "false"" : ""; //标志当前页第一页是否相等 来控制前俩个按钮的有效性
strBuilder.AppendFormat(GetAHtml(attr, "首页", pageIndex, 0));//上一页
if (attr != "visible="false"")
{
strBuilder.AppendFormat(GetAHtml(attr, "上一页",pageIndex-1,0));
}
pagecount = pageIndex / perSize;//当前页数 0~1~2
pagecount = pageIndex % perSize == 0 ? pagecount - 1 : pagecount;//清除当 当前页数为分页页码数的整数倍页时除数多一的状况
floorcount = pageTotalCount / perSize;//页面层数 0~1~2
currentLastPage = pageTotalCount < perSize * (pagecount + 1) ? pageTotalCount : perSize * (pagecount + 1);
//currentLastPage = recordTotalCount % 10 == 0 ? recordTotalCount / 10 : recordTotalCount / 10 + 1;

if (pageIndex > perSize) //如果大于10条则显示...
{
strBuilder.AppendFormat(GetAHtml("", "1", 1, 0)); //设置超链接
strBuilder.AppendFormat(GetAHtml("", "2", 2, 0)); //设置超链接
strBuilder.AppendFormat(GetAHtml("", "3", 3, 0)); //设置超链接
strBuilder.AppendFormat(GetAHtml("", "...", perSize * pagecount, 0));
}
for (int i = perSize * pagecount + 1; i <= currentLastPage; i++)
{
if (i == pageIndex)
{
strBuilder.AppendFormat(GetAHtml("", i.ToString(), i,1));//GetSpanHtml(i, "current")
}
else
{
strBuilder.AppendFormat(GetAHtml("", i.ToString(),i,0)); //设置超链接
}
}
if (pageIndex <= perSize * floorcount) //当当前序号小于倒数第二页页码时显示在后端...
{
strBuilder.AppendFormat(GetAHtml("", "", perSize * (pagecount + 1) + 1, 0));
}

attr = pageIndex == pageTotalCount ? "visible="" + "false"" : "";//标志当前页最后一页是否相等 来控制后俩个按钮的有效性

if (attr != "visible="false"")
{
strBuilder.AppendFormat(GetAHtml(attr, "下一页",(pageIndex+1),0)); //下一页
}

strBuilder.AppendFormat(GetAHtml(attr, "末页",pageTotalCount,0));//末页

//strBuilder.AppendFormat("</div>");

return strBuilder.ToString();
}

/// <summary>
/// get the html of a label
/// </summary>
/// <param name="title">a's title</param>
/// <param name="url">the url of a</param>
/// <param name="attr">the attribute</param>
/// <returns>return html string</returns>
private static string GetAHtml(string attr, string title,int index,int isCurrent)
{
string str = "";
// string temp = index.ToString() + "^";
switch (title)
{
case "首页":
str = "<a id = "first" " + attr + " href = 'javascript:void(0)' style="margin-right:5px;" onclick = "GetDataByPage(" + index + ")">首页</a> ";
break;
case "末页":
str = "<a id = "end" " + attr + " href = 'javascript:void(0)' style="margin-right:5px;" onclick = "GetDataByPage(" + index + ")">末页</a> ";
break;
case "上一页":
str = "<a id ="prev" " + attr + " href = 'javascript:void(0)' style="margin-right:5px;" onclick = "GetDataByPage(" + index + ")">上一页</a> ";
break;
case "下一页":
str = "<a id = "next" " + attr + " href = 'javascript:void(0)' style="margin-right:5px;" onclick = "GetDataByPage(" + index + ")">下一页</a> ";
break;
default:
if (isCurrent == 1)
{
str = "<a id = "page"+index+"" " + attr + " class = "current" href = 'javascript:void(0)' style="margin-right:5px;" onclick = "GetDataByPage(" + index + ")">" + index + "</a> ";
}
else
{
str = "<a id = "page" + index + "" " + attr + " href = 'javascript:void(0)' style="margin-right:5px;" onclick = "GetDataByPage(" + index + ")">" + index + "</a> ";
}
break;
}
return str;
}

//这个方法的目的是固定住当前用户点击的页索引
private static string GetSpanHtml(int num, string className)
{
return "<span class="" + className + "">" + num + "</span> ";
}

/*别人写的分页类*/

///<summary>
  2 /// 生成分页标签
  3 ///</summary>
  4  publicclass Pager
  5     {
  6 privateint pageIndex;
  7 ///<summary>
  8 /// 当前请求的页码
  9 ///</summary>
 10  publicint PageIndex
 11         {
 12 get { return pageIndex; }
 13 privateset { pageIndex = value; }
 14         }
 15 
 16 privateint pageSize;
 17 ///<summary>
 18 /// 请求的当前页的大小
 19 ///</summary>
 20 publicint PageSize
 21         {
 22 get { return pageSize; }
 23 privateset { pageSize = value; }
 24         }
 25 
 26 privateint rowCount;
 27 ///<summary>
 28 /// 数据总量，可以根据这个判断出能够显示多少页
 29 ///</summary>
 30 publicint RowCount
 31         {
 32 get { return rowCount; }
 33 privateset { rowCount = value; }
 34         }
 35 
 36 privatestring hrefFormat;
 37 ///<summary>
 38 /// 页码连接所要指向的url格式化字符串例如：aticleList.aspx?{0}&delegate=wenxue
 39 ///</summary>
 40 publicstring HrefFormat
 41         {
 42 get { return hrefFormat; }
 43 set { hrefFormat = value; }
 44         }
 45 privateint pageCount;
 46 
 47 private Pager() { }
 48 
 49 public Pager(int pageIndex, int pageSize, int rowCount)
 50         {
 51 //计算出总共有多少页
 52 this.pageCount = (int)Math.Ceiling(rowCount / (double)pageSize);
 53 //如果pageIndex<1 就让当前页码等于1，如果pageIndex大于最大页码.
 54 this.PageIndex = GetPageIndex(pageIndex, pageSize, rowCount);
 55 
 56 this.PageSize = pageSize;
 57         }
 58 
 59 publicstring CreatePager()
 60         {
 61             StringBuilder sb =new StringBuilder();
 62             sb.AppendLine("<div class='pager'>");
 63 if (this.PageIndex >1)
 64             {
 65                 sb.AppendLine("	<a id='pre' href='"+string.Format(this.HrefFormat, "page="+ GetPageIndex(this.pageIndex -1, this.PageSize, this.RowCount)) +"'>"+"上一页"+"</a>");
 66             }
 67 else
 68             {
 69                 sb.AppendLine("	<a id='pre' class='false'>"+"上一页"+"</a>");
 70             }
 71             CreatePageIndex(sb);
 72 if (this.pageIndex <this.pageCount)
 73             {
 74                 sb.AppendLine("	<a id='next' href='"+string.Format(this.HrefFormat, "page="+ GetPageIndex(this.pageIndex +1, this.PageSize, this.RowCount)) +"'>"+"下一页"+"</a>");
 75             }
 76 
 77             sb.AppendLine("</div>");
 78 return sb.ToString();
 79         }
 80 
 81 privatevoid CreatePageIndex(StringBuilder sb)
 82         {
 83 if (this.pageIndex <=7)
 84             {
 85 int i =1;
 86 for (; i <= (this.pageIndex >this.pageCount ?10 : this.pageCount); i++)
 87                 {
 88 if (i ==this.pageIndex)
 89                     {
 90                         sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page="+ i) +"' class='Active'>"+ i +"</a>");
 91 continue;
 92                     }
 93                     sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page="+ i) +"'>"+ i +"</a>");
 94                 }
 95 if (i <this.pageCount)
 96                 {
 97                     sb.AppendLine("...");
 98                     sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page="+this.pageCount +"") +"'>"+this.pageCount +"</a>");
 99 
100                 }
101             }
102 elseif (this.PageIndex >12&&this.pageCount >this.pageIndex +5)
103             {
104                 sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page=1") +"'>"+1+"</a>");
105                 sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page=2") +"'>"+2+"</a>");
106                 sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page=3") +"'>"+3+"</a>");
107                 sb.AppendLine("...");
108 for (int i =this.pageIndex -4; i <= (this.pageIndex +4>this.pageCount ?this.pageCount : this.pageIndex +4); i++)
109                 {
110 if (i ==this.pageIndex)
111                     {
112                         sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page="+ i) +"' class='Active'>"+ i +"</a>");
113 continue;
114                     }
115                     sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page="+ i) +"'>"+ i +"</a>");
116                 }
117                 sb.AppendLine("...");
118 for (int j =this.pageCount -2; j <=this.pageCount; j++)
119                 {
120                     sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page="+ j) +"'>"+ j +"</a>");
121                 }
122             }
123 elseif (this.pageIndex >7)
124             {
125 
126 int i =this.pageIndex -4;
127 if (i >2)
128                 {
129                     sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page=1") +"'>"+1+"</a>");
130                     sb.AppendLine("...");
131                 }
132 for (; i <= (this.pageIndex +4>this.pageCount ?this.pageCount : this.pageIndex +4); i++)
133                 {
134 if (i ==this.pageIndex)
135                     {
136                         sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page="+ i) +"' class='Active'>"+ i +"</a>");
137 continue;
138                     }
139                     sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page="+ i) +"'>"+ i +"</a>");
140 
141                 }
142 if (i <this.pageCount)
143                 {
144                     sb.AppendLine("...");
145                     sb.AppendLine("	<a href='"+string.Format(HrefFormat, "page="+this.pageCount +"") +"'>"+this.pageCount +"</a>");
146                 }
147             }
148         }
149 
150 privateint GetPageIndex(int pageIndex, int pageSize, int rowCount)
151         {
152 int pageCount = (int)Math.Ceiling(rowCount / (double)pageSize);
153 if (pageIndex <1)
154             {
155 return1;
156             }
157 elseif (pageIndex >this.pageCount)//就让他等于最大页码
158             {
159 return pageCount;
160             }
161 else
162             {
163 return pageIndex;
164             }
165         }
166     }

css:

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div.pager a {     display:block;     float:left;     margin-left:3px;     text-align:center;     text-decoration:none;     border:1px solid Gray;     color:Gray;     26px; } #pre {     80px; } #pre.false:hover {     border:1px solid Gray;     color:Gray;     background-Color:White; } #next {     80px; } div.pager a:hover,div.pager a.Active {     border:1px solid black;     background-Color:#4b6c9e;     color:#f9f9f9; }