private static TDictionary GetDictionary <TDictionary>(object obj, IPagerOption option) where TDictionary : IDictionary <string, object>, new()
{
var t = new TDictionary();
foreach (var item in obj.GetType().GetProperties())
{
var value = item.GetValue(obj, null);
if (value == null)
{
continue;
}
var name = item.Name;
switch (option.ParamNameFormat.ToLower())
{
case "lower":
name = name.ToLower();
break;
case "upper":
name = name.ToUpper();
break;
}
t.Add(name, value);
}
return(t);
}
/// <summary>
/// 分页方法
/// </summary>
/// <param name="html"></param>
/// <param name="routeValues">使用的路由的值</param>
/// <param name="option">分页选项</param>
/// <returns></returns>
public static HtmlString Pager(this IHtmlHelper html, object routeValues, IPagerOption option)
{
var routeValue = new RouteValueDictionary();
if (routeValues != null)
{
routeValue = GetDictionary <RouteValueDictionary>(routeValues, option);
}
return(html.Pager(option.RouteName, routeValue, option));
}
/// <summary>
/// 分页方法
/// </summary>
/// <param name="html"></param>
/// <param name="routeName">使用的路由名称</param>
/// <param name="routeValues">使用的路由的值</param>
/// <param name="option">分页选项</param>
/// <returns></returns>
public static HtmlString Pager(this IHtmlHelper html, string routeName, RouteValueDictionary routeValues, IPagerOption option)
{
//初始化
var routeData = html.ViewContext.RouteData;
if (routeData == null)
{
return(HtmlString.Empty);
}
var url = new UrlHelper(new ActionContext(html.ViewContext.HttpContext, routeData, html.ViewContext.ActionDescriptor));
if (routeValues == null)
{
routeValues = new RouteValueDictionary();
}
//计算分页信息
var pageCount = option.DataCount / option.PageSize;
if (option.DataCount % option.PageSize != 0)
{
pageCount += 1;
}
var strs = new StringBuilder();
if (option.PageIndex < 1)
{
option.PageIndex = 1;
}
else if (option.PageIndex > pageCount)
{
option.PageIndex = pageCount;
}
if (pageCount <= 1)
{
return(HtmlString.Empty);
}
strs.AppendFormat("<ul class='{0}'>", option.PagerClassName);
if (option.ShowDataCount)
{
strs.AppendFormat("<li><span class='{1}'>{0}</span></li>", string.Format(option.DataCountTextFormat, option.DataCount), option.PagerStatusClassName);
}
//添加分页状态
if (option.ShowPagerStatus)
{
strs.AppendFormat("<li><span class='{0}'>{1}</span></li>", option.PagerStatusClassName, string.Format(option.PagerStatusTextFormat, option.PageIndex, pageCount));
}
//判断路由值中是否包含页码参数,不存在就添加
if (routeValues.ContainsKey(option.PageIndexParamName))
{
routeValues[option.PageIndexParamName] = 1;
}
else
{
routeValues.Add(option.PageIndexParamName, 1);
}
//添加首页按钮
if (option.ShowFirstLastPageButton)
{
if (option.PageIndex != 1)
{
strs.AppendFormat("<li><a class='{2}' href='{0}'>{1}</a></li>", url.RouteUrl(routeName, routeValues), option.FirstPageButtonText, option.FirstPageButtonClassName);
}
else
{
strs.AppendFormat("<li><a class='{2}' href='{0}'>{1}</a></li>", "javascript:void(0)", option.FirstPageButtonText, option.FirstPageButtonClassName);
}
}
//计算按钮分组
int btnGroupNum = pageCount / option.PageButtonCount;//按钮分组的个数
if (pageCount % option.PageButtonCount != 0)
{
btnGroupNum += 1;
}
int btnGroupIndex = option.PageIndex / option.PageButtonCount;//当前按钮分组的索引
if (option.PageIndex % option.PageButtonCount != 0)
{
btnGroupIndex += 1;
}
//添加上一组按钮
if (option.ShowPreNextGroupButton)
{
if (btnGroupIndex > 1)
{
int preGroupIndex = btnGroupIndex - 1;
int preGroupBtnStart = preGroupIndex * option.PageButtonCount;
routeValues[option.PageIndexParamName] = preGroupBtnStart;
strs.AppendFormat("<li><a class='{2}' href='{0}'>{1}</a></li>", url.RouteUrl(routeName, routeValues), option.PreGroupButtonText, option.PreGroupButtonClassName);
}
else
{
strs.AppendFormat("<li><a class='{2}' href='{0}'>{1}</a></li>", "javascript:void(0)", option.PreGroupButtonText, option.PreGroupButtonClassName);
}
}
//添加上一页按钮
if (option.ShowPreNextPageButton)
{
if (option.PageIndex > 1)
{
routeValues[option.PageIndexParamName] = option.PageIndex > 1 ? option.PageIndex - 1 : option.PageIndex;
strs.AppendFormat("<li><a class='{2}' href='{0}'>{1}</a></li>", url.RouteUrl(routeName, routeValues), option.PrePageButtonText, option.PrePageButtonClassName);
}
else
{
strs.AppendFormat("<li><a class='{2}' href='{0}'>{1}</a></li>", "javascript:void(0)", option.PrePageButtonText, option.PrePageButtonClassName);
}
}
//添加数字按钮
var btnStart = option.PageIndex - option.PageButtonCount / 2;
if (btnStart <= 0)
{
btnStart = 1;
}
if (!option.CurrentPageInCenter)
{
btnStart = ((btnGroupIndex - 1) * option.PageButtonCount) + 1;
}
var btnEnd = btnStart + option.PageButtonCount;
for (int i = btnStart; i < btnEnd; i++)
{
if (i <= pageCount)
{
routeValues[option.PageIndexParamName] = i;
if (i == option.PageIndex)
{
strs.AppendFormat("<li class='{2}'><a href='{0}' class='{2}'>{1}</a></li>", url.RouteUrl(routeName, routeValues), i, option.CurrentPageClassName);
}
else
{
strs.AppendFormat("<li><a href='{0}'>{1}</a></li>", url.RouteUrl(routeName, routeValues), i);
}
}
}
//添加下一页按钮
if (option.ShowPreNextPageButton)
{
if (option.PageIndex < pageCount)
{
routeValues[option.PageIndexParamName] = option.PageIndex + 1 > pageCount ? pageCount : option.PageIndex + 1;
strs.AppendFormat("<li><a class='{2}' href='{0}'>{1}</a></li>", url.RouteUrl(routeName, routeValues), option.NextPageButtonText, option.NextPageButtonClassName);
}
else
{
strs.AppendFormat("<li><a class='{2}' href='{0}'>{1}</a></li>", "javascript:void(0)", option.NextPageButtonText, option.NextPageButtonClassName);
}
}
//添加下一组按钮
if (option.ShowPreNextGroupButton)
{
if (btnGroupIndex < btnGroupNum)
{
int nextGroupIndex = btnGroupIndex + 1;
int nextGroupBtnStart = ((nextGroupIndex - 1) * option.PageButtonCount) + 1;
routeValues[option.PageIndexParamName] = nextGroupBtnStart;
strs.AppendFormat("<li><a class='{2}' href='{0}'>{1}</a></li>", url.RouteUrl(routeName, routeValues), option.NextGroupButtonText, option.NextGroupButtonClassName);
}
else
{
strs.AppendFormat("<li><a class='{2}' href='{0}'>{1}</a></li>", "javascript:void(0)", option.NextGroupButtonText, option.NextGroupButtonClassName);
}
}
//添加尾页按钮
if (option.ShowFirstLastPageButton)
{
if (option.PageIndex < pageCount)
{
routeValues[option.PageIndexParamName] = pageCount;
strs.AppendFormat("<li><a class='{2}' href='{0}'>{1}</a></li>", url.RouteUrl(routeName, routeValues), option.LastPageButtonText, option.LastPageButtonClassName);
}
else
{
strs.AppendFormat("<li><a class='{2}' href='{0}'>{1}</a></li>", "javascript:void(0)", option.LastPageButtonText, option.LastPageButtonClassName);
}
}
//添加跳转区域
if (option.ShowGotoPanel)
{
var txtId = Guid.NewGuid().ToString();
string funcName = "func_" + Guid.NewGuid().ToString().Replace("-", "");
strs.AppendFormat("<li><input type='text' class='{0}' id='{1}'/>", option.GotoPageInputClassName, txtId);
strs.AppendFormat("<a class='{0}' href='javascript:{2}();'>{1}</a></li>", option.GotoPageButtonClassName, option.GotoPageBtuttonText, funcName);
string js = @"<script type='text/javascript'>
function funcName()
{
var pageIndex=document.getElementById('{0}').value;
if(pageIndex.length==0 || !/[1-9][0-9]*/.test(pageIndex))return;
var url=location.toString().toLowerCase();
if (url.indexOf('{1}')<0) {
if (url.indexOf('?')<0) {
url+='?{1}='+pageIndex;
}
else {
url+='&{1}='+pageIndex;
}
}
else
{
var reg=/{1}=-?[0-9]+/;
url=url.replace(reg,'{1}='+pageIndex);
}
location=url;
}
</script>";
js = js.Replace("funcName", funcName).Replace("{0}", txtId).Replace("{1}", option.PageIndexParamName.ToLower());
strs.Append(js);
}
//结束
strs.Append("</ul>");
return(new HtmlString(strs.ToString()));
}
/// <summary>
/// 分页方法
/// </summary>
/// <param name="html"></param>
/// <param name="routeName">使用的路由名称</param>
/// /// <param name="option">分页选项</param>
/// <returns></returns>
public static HtmlString Pager(this IHtmlHelper html, string routeName, IPagerOption option)
{
var routeValue = new RouteValueDictionary();
return(html.Pager(routeName, routeValue, option));
}
public PagerController(IPagerOption pagerOption)
{
PagerOption = pagerOption;
}
