using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Text;
namespace NSLzhPages
{
public class LzhPages : System.Web.UI.WebControls.WebControl
{
private int _count; //每页显示的记录条数
private int _currentPage; //当前页
private int _allCount; //所有记录条数
private int _showPages; //显示页数
//以下脚本用于从文本框输入页码
private const string SCRIPTSTRING = "
1<script language="javascript">\n" \+
2
3" function go(ctrl,max)\n" \+
4
5" {\n" \+
6
7" if(ctrl.value >= 1 && ctrl.value <= max)\n" \+
8
9" {\n" \+
10
11" var url;\n" \+
12
13" var index;\n" \+
14
15" url = location.href;\n" \+
16
17" index = url.indexOf('?');\n" \+
18
19" if(index == -1)\n" \+
20
21" {\n" \+
22
23" }\n" \+
24
25" else\n" \+
26
27" {\n" \+
28
29" url = url.substring(0,index);\n" \+
30
31" }\n" \+
32
33" location.href = url + '?currentPage=' + ctrl.value;\n" \+
34
35" }\n" \+
36
37" else\n" \+
38
39" {\n" \+
40
41" alert('您输入的页码必须是符合页面要求的数字,最大值是：' + max);\n" \+
42
43" return false;\n" \+
44
45" }\n" \+
46
47" }\n" \+
48
49"</script>
\n" ;
[DefaultValue(10),Category( "Customer" )]
public int Count
{
set
{
if ( value <= 0)
_count = 1;
else
_count = value ;
}
get
{
return _count;
}
}
[DefaultValue(1),Category( "Customer" )]
public int CurrentPage
{
set
{
if ( value < 0)
_currentPage = 1;
else
_currentPage = value ;
}
get
{
return _currentPage;
}
}
[DefaultValue(1),Category( "Customer" )]
public int AllCount
{
get
{
return _allCount;
}
set
{
if (_allCount < 0)
throw new Exception( "记录总条数不能为负数" );
else
_allCount = value ;
}
}
[DefaultValue(1),Category( "Customer" )]
public int Pages //总页数
{
get
{
if ( this ._allCount % this ._count > 0)
return (( int ) this ._allCount / this ._count) + 1;
else
return (( int ) this ._allCount / this ._count);
}
}
[DefaultValue(1),Category( "Customer" )]
public int ShowPages
{
set
{
if ( value > 0)
_showPages = value ;
else
_showPages = 9;
}
get
{
return _showPages;
}
}
protected override void Render(HtmlTextWriter writer)
{
base .Render (writer);
string leftInfo;
StringBuilder centerInfo = new StringBuilder();
//分页条分三部分，leftInfo是最左边的部分，用来显示当前页/总页数，每页显示的记录条数
leftInfo = "页:" + this .CurrentPage.ToString() + "/" + this .Pages.ToString() + " " + "每页" + this .Count.ToString() + "条" + " 共" + this .AllCount.ToString() + "条" ;
//中间的部分是分页部分
int min; //要显示的页面数最小值
int max; //要显示的页面数最大值
if ( this .CurrentPage > this .Pages) //当前页必须小于最大页
{
this .CurrentPage = this .Pages;