/// <summary>
/// 获取分页(排序)参数
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public static PageParams GetPageParams(HttpRequestBase request, ViewDataDictionary viewData)
{
int pageSize = request["PageSize"].ParseInt();
int pageIndex = request["PageIndex"].ParseInt();
int? sortField = request["SortField"] == null ? null : (int?)request["SortField"].ParseInt();
string sortFieldName = request["SortFieldName"];
SortDirectionEnum? sortDirection = request["SortDirection"] == null ? null : (SortDirectionEnum?)request["SortDirection"].ParseInt();
PageParams viewDataPageParams = viewData.GetPageParams();
//if (pageSize != viewDataPageParams.PageSize)
// pageIndex = 1; //改变了分页大小后自动跳到第一页
PageParams pageParams = new PageParams()
{
PageSize = pageSize <= 0 ? viewDataPageParams.PageSize : pageSize,
PageIndex = pageIndex <= 0 ? viewDataPageParams.PageIndex : pageIndex,
SortField = sortField == null ? viewDataPageParams.SortField : sortField.Value,
SortFiledName = sortFieldName,
sortDirection = sortDirection == null ? viewDataPageParams.sortDirection : sortDirection.Value
};
return pageParams;
}