public PageList <TEntity> GetOrderPagedList(Expression <Func <TEntity, bool> > Condition, PageQueryParam Param)
{
var property = typeof(TEntity).GetProperty(Param.OrderFiled);
var parameter = Expression.Parameter(typeof(TEntity), "p");
var propertyAccess = Expression.MakeMemberAccess(parameter, property);
var orderByExp = Expression.Lambda(propertyAccess, parameter);
var query = DbContext.Set <TEntity>().Where(Condition);
string methodName = Param.IsDesc ? "OrderByDescending" : "OrderBy";
MethodCallExpression resultExp = Expression.Call(typeof(Queryable), methodName, new Type[] { typeof(TEntity), property.PropertyType }, query.Expression, Expression.Quote(orderByExp));
query = query.Provider.CreateQuery <TEntity>(resultExp);
var result = query.AsEnumerable().ToPagedList(Param.PageIndex, Param.PageSize);
Param.Count = result.TotalItemCount;
return(result);
}
public PageList <TEntity> GetPagedList(Expression <Func <TEntity, bool> > predicate, PageQueryParam condition, OrderCallBack <TEntity> CallBack)
{
IQueryable <TEntity> query = DbContext.Set <TEntity>().Where(predicate);
query = CallBack(query);
var result = query.AsEnumerable().ToPagedList(condition.PageIndex, condition.PageSize);
condition.Count = result.TotalItemCount;
return(result);
}
public IQueryable <TEntity> QueryPagedList(Expression <Func <TEntity, bool> > predicate, PageQueryParam condition, OrderCallBack <TEntity> CallBack)
{
IQueryable <TEntity> query = DbContext.Set <TEntity>().Where(predicate);
query = CallBack(query);
int totalCount = 0;
var queryList = query.ToPagedList(condition.PageIndex, condition.PageSize, out totalCount);
return(queryList);
}
/// <summary>
/// 根据条件获取分页列表
/// </summary>
/// <param name="predicate">查询条件表达式</param>
/// <param name="condition">条件</param>
/// <returns>实体分页列表</returns>
public PageList <TEntity> GetPagedList(Expression <Func <TEntity, bool> > predicate, PageQueryParam condition)
{
IQueryable <TEntity> query = DbContext.Set <TEntity>().Where(predicate);
if (!String.IsNullOrEmpty(condition.OrderFiled))
{
query = query.OrderBy(condition.OrderFiled);
}
var result = query.AsEnumerable().ToPagedList(condition.PageIndex, condition.PageSize);
condition.Count = result.TotalItemCount;
return(result);
}
/// <summary>
/// 根据条件获取分页列表
/// </summary>
/// <param name="predicate">查询条件表达式</param>
/// <param name="condition">条件</param>
/// <returns>实体分页列表</returns>
public IQueryable <TEntity> QueryPagedList(Expression <Func <TEntity, bool> > predicate, PageQueryParam condition)
{
IQueryable <TEntity> query = DbContext.Set <TEntity>().Where(predicate);
if (!String.IsNullOrEmpty(condition.OrderFiled))
{
query = query.OrderBy(condition.OrderFiled);
query = query.OrderByDescending(t => condition.OrderFiled);
}
int totalCount = 0;
var queryList = query.ToPagedList(condition.PageIndex, condition.PageSize, out totalCount);
return(queryList);
}
