下面这一段代码的具体执行流程,那个高手能说一下,看不懂,新手求教
IEnumerable<system_acl_resource> data = _context.system_acl_resource;
if (!String.IsNullOrEmpty(Request["resource_type"]))
{
data = data.Where(c => c.resource_type == Request["resource_type"]);}
var model = new PageInfo<system_acl_resource>
{
CurrentPageIndex = page != null ? page.Value : 1,
//确定记录总数(才能计算出PageCount页数)
RecordCount = data.Count(),
};
// 获取当前页的信息
model.PageData = data.OrderBy(c => c.resource_id).Skip((model.CurrentPageIndex - 1) * model.PageSize).Take(model.PageSize).ToList();
return View(model);
IEnumerable<system_acl_resource> data = _context.system_acl_resource;
if (!String.IsNullOrEmpty(Request["resource_type"]))
{
data = data.Where(c => c.resource_type == Request["resource_type"]);}
var model = new PageInfo<system_acl_resource>
{
CurrentPageIndex = page != null ? page.Value : 1,
//确定记录总数(才能计算出PageCount页数)
RecordCount = data.Count(),
};
// 获取当前页的信息
model.PageData = data.OrderBy(c => c.resource_id).Skip((model.CurrentPageIndex - 1) * model.PageSize).Take(model.PageSize).ToList();
return View(model);
Linq 唉 老是不想去接触。但确实很优雅.
IEnumerable<system_acl_resource> data = _context.system_acl_resource; //数据源
//获取Reques["resource_type"]的值 如果不为空 则筛选data中c.resource_type等于这个的数据
if (!String.IsNullOrEmpty(Request["resource_type"]))
{
data = data.Where(c => c.resource_type == Request["resource_type"]);
}
//实体类实例化并且属性赋值 CurrentPageIndex;RecordCount
var model = new PageInfo<system_acl_resource>
{
CurrentPageIndex = page != null ? page.Value : 1,
//确定记录总数(才能计算出PageCount页数)
RecordCount = data.Count(),
};
// 得到该页的数据(排序处理) 然后返回给view
model.PageData = data.OrderBy(c => c.resource_id).Skip((model.CurrentPageIndex - 1) * model.PageSize).Take(model.PageSize).ToList();
return View(model);