园子里分页代码是老生常谈了，可惜找到的不是有问题就是满足不了自己的需求，静下心来重新改写了在用的一个分页器，因为有测试会比较稳定，虽然测试覆盖可能还不是很全面。
用例代码：
new
CNBlogs.Presentation.Web.PagingBuilder()
{
FirstPageLink = firstLink,
OnlickJsFunc =
"Return true;"
,
PageIndex = (
int
)(p??1),
ShowPageCount = 11,
TotalCount = 1,
UrlFormat = urlFormate,
PageSize = PAGE_SIZE,
AjaxUrl =
"/"
};
//MVC View Code
@{
Html.RenderPaging(Model.Paging);
}
|
先上代码：
public
class
PagingBuilder
{
private
TextWriter _writer;
private
int
_totalCount;
private
int
_pageIndex;
private
int
_pageSize;
private
int
_showPageCount;
private
string
_urlFormat;
private
string
_onclickJsFunc;
private
string
_firstPageLink;
private
string
_ajaxUrl =
"/ToolkitPaging/load"
;
private
int
_totalPageCount;
private
int
_lastPage = 1;
#region Properties
public
bool
OnlyLinkText {
get
;
set
; }
/// <summary>
/// 总记录数
/// </summary>
public
int
TotalCount
{
get
{
return
_totalCount;
}
set
{
_totalCount = value;
}
}
/// <summary>
/// 当前页码
/// </summary>
public
int
PageIndex
{
get
{
return
_pageIndex;
}
set
{
_pageIndex = value;
}
}
/// <summary>
/// 每页显示的记录数
/// </summary>
public
int
PageSize
{
get
{
return
_pageSize;
}
set
{
_pageSize = value;
}
}
/// <summary>
/// 默认显示的页码数
/// </summary>
public
int
ShowPageCount
{
get
{
return
_showPageCount;
}
set
{
_showPageCount = value;
}
}
/// <summary>
/// 页码链接地址
/// </summary>
public
string
UrlFormat
{
get
{
return
_urlFormat;
}
set
{
_urlFormat = value;
}
}
/// <summary>
/// 页码链接onclick事件处理js方法，pageIndex,pageSize参数无需添加
/// </summary>
public
string
OnlickJsFunc
{
get
{
return
_onclickJsFunc;
}
set
{
_onclickJsFunc = value;
}
}
/// <summary>
/// 第1页链接地址
/// </summary>
public
string
FirstPageLink
{
get
{
return
_firstPageLink;
}
set
{
_firstPageLink = value;
}
}
/// <summary>
/// ajax加载分页的请求地址，默认是/paging/load
/// </summary>
public
string
AjaxUrl
{
get
{
return
_ajaxUrl;
}
set
{
_ajaxUrl = value;
}
}
/// <summary>
/// ajax加载分页的js回调方法，有默认实现
/// </summary>
private
string
_ajaxCallbak;
public
string
AjaxCallbak
{
get
{
return
_ajaxCallbak;
}
set
{
_ajaxCallbak = value;
}
}
/// <summary>
/// 顶部分页Html标签Id
/// </summary>
private
string
_topPagerId =
"pager_top"
;
public
string
TopPagerId
{
get
{
return
_topPagerId;
}
set
{
_topPagerId = value;
}
}
public
bool
IsRenderScript {
get
;
set
; }
#endregion
public
PagingBuilder()
{
IsRenderScript =
true
;
}
public
void
Render(TextWriter writer)
{
_writer = writer;
Render();
}
public
void
Render()
{
if
(_totalCount <= _pageSize)
{
return
;
}
if
(
this
.IsRenderScript)
{
_writer.Write(
"<div id=\"paging_block\">"
);
}
if
(!
this
.OnlyLinkText)
{ _writer.Write(
"<div class=\"pager\">"
); }
//总页数
_totalPageCount = (_totalCount + _pageSize - 1) / _pageSize;
int
currint = _showPageCount / 2;
if
(_pageIndex - currint <= 1)
{
Head();
}
else
if
(_pageIndex + currint >= _totalPageCount)
{
Tail();
}
else
{
Middle();
}
if
(!
this
.OnlyLinkText)
{ _writer.Write(
"</div>"
); }
if
(IsRenderScript)
{
_writer.Write(
"</div>"
);
RenderScript();
}
}
private
void
Head()
{
int
totalPageCount = _totalPageCount;
int
currint = _showPageCount / 2;
if
(_pageIndex > 1)
{
//处理上一页的连接
RenderPage(_pageIndex - 1,
this
.OnlyLinkText ?
"Prev "
:
"< Prev"
);
}
for
(
int
i = 1; i <= (_showPageCount > totalPageCount ? totalPageCount : _showPageCount); i++)
{
RenderPage(i);
}
if
(_lastPage + 1 < totalPageCount)
{ _writer.Write(
"..."
); }
if
(_lastPage < totalPageCount)
{ RenderPage(totalPageCount); }
if
(_pageIndex < totalPageCount)
{
//处理下一页的链接
RenderPage(_pageIndex + 1,
this
.OnlyLinkText ?
"Next"
:
"Next >"
);
}
}
private
void
Middle()
{
int
totalPageCount = _totalPageCount;
int
currint = _showPageCount / 2;
if
(_pageIndex > 1)
{
//处理上一页的连接
RenderPage(_pageIndex - 1,
this
.OnlyLinkText ?
"Prev "
:
"< Prev"
);
}
if
(_pageIndex - currint > 1)
{
//处理首页连接
RenderPage(1);
if
(_pageIndex-currint>2)
{_writer.Write(
"..."
);}
}
for
(
int
i = 0; i <= _showPageCount; i++)
{
var
c = _pageIndex + i - currint;
//一共最多显示10个页码，前面5个，后面5个
if
(c > 1 && c < totalPageCount)
{
if
(c != 2 && _lastPage == 1)
{ _writer.Write(
"..."
); }
RenderPage(c);
}
}
if
(_pageIndex + currint < totalPageCount)
{
if
(_lastPage + 1 != totalPageCount)
{ _writer.Write(
"..."
); }
RenderPage(totalPageCount);
}
if
(_pageIndex < totalPageCount)
{
//处理下一页的链接
RenderPage(_pageIndex + 1,
this
.OnlyLinkText ?
"Next"
:
"Next >"
);
}
}
private
void
Tail()
{
int
totalPageCount = _totalPageCount;
int
currint = _showPageCount / 2;
if
(_pageIndex > 1)
{
//处理上一页的连接
RenderPage(_pageIndex - 1,
this
.OnlyLinkText ?
"Prev "
:
"< Prev"
);
}
if
(_pageIndex - currint > 1&&_totalPageCount>_showPageCount)
{
//处理首页连接
RenderPage(1);
}
for
(
int
i = ((_totalPageCount - _showPageCount) < 0 ? 0 : (_totalPageCount - _showPageCount)) + 1; i <= _totalPageCount; i++)
{
if
(i > 2 && _lastPage == 1)
{
_writer.Write(
"..."
);
}
RenderPage(i);
}
if
(_pageIndex < totalPageCount)
{
//处理下一页的链接
RenderPage(_pageIndex + 1,
this
.OnlyLinkText ?
"Next"
:
"Next >"
);
}
}
private
void
RenderPage(
int
pageIndex)
{
RenderPage(pageIndex,
string
.Empty);
}
private
void
RenderPage(
int
pageIndex,
string
pageText,
bool
visible =
true
)
{
_lastPage = pageIndex;
if
(OnlyLinkText)
{
if
(pageIndex == _pageIndex)
{
_writer.Write(
"-"
);
}
_writer.Write(
" "
);
if
(!
string
.IsNullOrEmpty(pageText))
{ _writer.Write(pageText); }
else
{
_writer.Write(pageIndex);
}
if
(pageIndex == _pageIndex)
{
_writer.Write(
"-"
);
}
return
;
}
string
link =
""
;
if
(
string
.IsNullOrEmpty(_urlFormat))
{
link =
"javascript:void(0)"
;
}
else
{
if
(pageIndex == 1 && !
string
.IsNullOrEmpty(_firstPageLink))
{
link = _firstPageLink;
}
else
{
link =
string
.Format(_urlFormat, pageIndex);
}
}
_writer.Write(
"<a href=\""
);
_writer.Write(link);
_writer.Write(
"\""
);
//style
if
(!visible)
{
_writer.Write(
" style=\"display:none\""
);
}
#region class
if
(
string
.IsNullOrEmpty(pageText))
{
_writer.Write(
" class=\"p_"
);
_writer.Write(pageIndex);
if
(pageIndex == _pageIndex)
{
_writer.Write(
" current"
);
}
_writer.Write(
"\""
);
}
#endregion
#region onclick
if
(!
string
.IsNullOrEmpty(_onclickJsFunc))
{
_writer.Write(
" onclick=\""
);
if
(_onclickJsFunc.IndexOf(
"()"
) < 0)
{
_writer.Write(_onclickJsFunc.Replace(
")"
,
","
+ pageIndex +
","
+ _pageSize +
")"
));
}
else
{
_writer.Write(_onclickJsFunc.Replace(
"()"
,
"("
+ pageIndex +
","
+ _pageSize +
")"
));
}
_writer.Write(
";buildPaging("
+ pageIndex +
");return false;"
);
_writer.Write(
"\""
);
}
#endregion
#region id
//if (pageText.IndexOf("<") > -1)
//{
// _writer.Write(" id=\"paging_p_prev\"");
//}
//else if (pageText.IndexOf(">") > -1)
//{
// _writer.Write(" id=\"paging_p_next\"");
//}
#endregion
_writer.Write(
">"
);
if
(
string
.IsNullOrEmpty(pageText))
{
_writer.Write(pageIndex);
}
else
{
_writer.Write(pageText);
}
_writer.Write(
"</a>"
);
}
private
void
RenderScript()
{
_writer.Write(
"<script type=\"text/javascript\">"
);
_writer.Write(
"function buildPaging(pageIndex){var pagingBuider="
);
_writer.Write(JsonConvert.SerializeObject(
this
));
_writer.Write(
";"
);
_writer.Write(
"pagingBuider.pageIndex=pageIndex;"
);
_writer.Write(
"$.ajax({url:pagingBuider.AjaxUrl,data:JSON.stringify(pagingBuider),"
);
_writer.Write(
"type:'post',dataType:'text',contentType:'application/json; charset=utf-8',"
);
_writer.Write(
"success:function (data) { $('#paging_block').html(data); "
);
_writer.Write(
"var pagerTop=$('#"
);
_writer.Write(_topPagerId);
_writer.Write(
"');"
);
_writer.Write(
"if(pageIndex>1){$(pagerTop).html(data).show();}else{$(pagerTop).hide();}}});"
);
_writer.WriteLine(
"}</script>"
);
}
}
|
测试分页效果，这里设定的弹性显示页数为11：
Render_Test : Passed
1//1
Result:
1//2
Result:- 1- 2 Next
2//2
Result: Prev 1- 2-
1//3
Result:- 1- 2 3 Next
2//3
Result: Prev 1- 2- 3 Next
3//3
Result: Prev 1 2- 3-
1//9
Result:- 1- 2 3 4 5 6 7 8 9 Next
3//9
Result: Prev 1 2- 3- 4 5 6 7 8 9 Next
5//9
Result: Prev 1 2 3 4- 5- 6 7 8 9 Next
7//9
Result: Prev 1 2 3 4 5 6- 7- 8 9 Next
9//9
Result: Prev 1 2 3 4 5 6 7 8- 9-
1//11
Result:- 1- 2 3 4 5 6 7 8 9 10 11 Next
3//11
Result: Prev 1 2- 3- 4 5 6 7 8 9 10 11 Next
5//11
Result: Prev 1 2 3 4- 5- 6 7 8 9 10 11 Next
7//11
Result: Prev 1 2 3 4 5 6- 7- 8 9 10 11 Next
10//11
Result: Prev 1 2 3 4 5 6 7 8 9- 10- 11 Next
1//13
Result:- 1- 2 3 4 5 6 7 8 9 10 11... 13 Next
3//13
Result: Prev 1 2- 3- 4 5 6 7 8 9 10 11... 13 Next
5//13
Result: Prev 1 2 3 4- 5- 6 7 8 9 10 11... 13 Next
7//13
Result: Prev 1 2 3 4 5 6- 7- 8 9 10 11 12 13 Next
8//13
Result: Prev 1... 3 4 5 6 7- 8- 9 10 11 12 13 Next
9//13
Result: Prev 1... 3 4 5 6 7 8- 9- 10 11 12 13 Next
10//13
Result: Prev 1... 3 4 5 6 7 8 9- 10- 11 12 13 Next
11//13
Result: Prev 1... 3 4 5 6 7 8 9 10- 11- 12 13 Next
12//13
Result: Prev 1... 3 4 5 6 7 8 9 10 11- 12- 13 Next
1//200
Result:- 1- 2 3 4 5 6 7 8 9 10 11... 200 Next
3//200
Result: Prev 1 2- 3- 4 5 6 7 8 9 10 11... 200 Next
5//200
Result: Prev 1 2 3 4- 5- 6 7 8 9 10 11... 200 Next
7//200
Result: Prev 1 2 3 4 5 6- 7- 8 9 10 11 12 13... 200 Next
8//200
Result: Prev 1...... 3 4 5 6 7- 8- 9 10 11 12 13 14... 200 Next
9//200
Result: Prev 1...... 4 5 6 7 8- 9- 10 11 12 13 14 15... 200 Next
10//200
Result: Prev 1...... 5 6 7 8 9- 10- 11 12 13 14 15 16... 200 Next
11//200
Result: Prev 1...... 6 7 8 9 10- 11- 12 13 14 15 16 17... 200 Next
12//200
Result: Prev 1...... 7 8 9 10 11- 12- 13 14 15 16 17 18... 200 Next
88//200
Result: Prev 1...... 83 84 85 86 87- 88- 89 90 91 92 93 94... 200 Next
199//200
Result: Prev 1... 190 191 192 193 194 195 196 197 198- 199- 200 Next
Result:
1//2
Result:- 1- 2 Next
2//2
Result: Prev 1- 2-
1//3
Result:- 1- 2 3 Next
2//3
Result: Prev 1- 2- 3 Next
3//3
Result: Prev 1 2- 3-
1//9
Result:- 1- 2 3 4 5 6 7 8 9 Next
3//9
Result: Prev 1 2- 3- 4 5 6 7 8 9 Next
5//9
Result: Prev 1 2 3 4- 5- 6 7 8 9 Next
7//9
Result: Prev 1 2 3 4 5 6- 7- 8 9 Next
9//9
Result: Prev 1 2 3 4 5 6 7 8- 9-
1//11
Result:- 1- 2 3 4 5 6 7 8 9 10 11 Next
3//11
Result: Prev 1 2- 3- 4 5 6 7 8 9 10 11 Next
5//11
Result: Prev 1 2 3 4- 5- 6 7 8 9 10 11 Next
7//11
Result: Prev 1 2 3 4 5 6- 7- 8 9 10 11 Next
10//11
Result: Prev 1 2 3 4 5 6 7 8 9- 10- 11 Next
1//13
Result:- 1- 2 3 4 5 6 7 8 9 10 11... 13 Next
3//13
Result: Prev 1 2- 3- 4 5 6 7 8 9 10 11... 13 Next
5//13
Result: Prev 1 2 3 4- 5- 6 7 8 9 10 11... 13 Next
7//13
Result: Prev 1 2 3 4 5 6- 7- 8 9 10 11 12 13 Next
8//13
Result: Prev 1... 3 4 5 6 7- 8- 9 10 11 12 13 Next
9//13
Result: Prev 1... 3 4 5 6 7 8- 9- 10 11 12 13 Next
10//13
Result: Prev 1... 3 4 5 6 7 8 9- 10- 11 12 13 Next
11//13
Result: Prev 1... 3 4 5 6 7 8 9 10- 11- 12 13 Next
12//13
Result: Prev 1... 3 4 5 6 7 8 9 10 11- 12- 13 Next
1//200
Result:- 1- 2 3 4 5 6 7 8 9 10 11... 200 Next
3//200
Result: Prev 1 2- 3- 4 5 6 7 8 9 10 11... 200 Next
5//200
Result: Prev 1 2 3 4- 5- 6 7 8 9 10 11... 200 Next
7//200
Result: Prev 1 2 3 4 5 6- 7- 8 9 10 11 12 13... 200 Next
8//200
Result: Prev 1...... 3 4 5 6 7- 8- 9 10 11 12 13 14... 200 Next
9//200
Result: Prev 1...... 4 5 6 7 8- 9- 10 11 12 13 14 15... 200 Next
10//200
Result: Prev 1...... 5 6 7 8 9- 10- 11 12 13 14 15 16... 200 Next
11//200
Result: Prev 1...... 6 7 8 9 10- 11- 12 13 14 15 16 17... 200 Next
12//200
Result: Prev 1...... 7 8 9 10 11- 12- 13 14 15 16 17 18... 200 Next
88//200
Result: Prev 1...... 83 84 85 86 87- 88- 89 90 91 92 93 94... 200 Next
199//200
Result: Prev 1... 190 191 192 193 194 195 196 197 198- 199- 200 Next
本文转自today4king博客园博客，原文链接：http://www.cnblogs.com/jinzhao/archive/2012/07/12/2587838.html，如需转载请自行联系原作者
