C# linq至llblgen的分组
这是我的立场C# linq至llblgen的分组,c#,.net,linq,group-by,llblgen,C#,.net,Linq,Group By,Llblgen,这是我的立场 private IEnumerable<IGrouping<AccountEntity,AxsEntity>> GetAxsEntitiesForInvoicing(IDataAccessAdapter adapter) { var metaData = new LinqMetaData(adapter); var query = from axsEntity in metaData.Axs join acco
private IEnumerable<IGrouping<AccountEntity,AxsEntity>> GetAxsEntitiesForInvoicing(IDataAccessAdapter adapter)
{
var metaData = new LinqMetaData(adapter);
var query = from axsEntity in metaData.Axs
join accountEntity in metaData.Account on axsEntity.AccountId equals accountEntity.AccountId
where
(axsEntity.DateDeleted.HasValue? axsEntity.DateDeleted.Value<DateTime.Now:true) &&
(axsEntity.DateEnd == null || axsEntity.DateEnd > axsEntity.DateRenewal) &&
axsEntity.DateRenewal < RenewalDate // NONE INCLUSIVE DATE
group axsEntity by accountEntity into axsCol
select axsCol;
return query;
private IEnumerable GetAxSenties发票(IDataAccessAdapter)
{
var元数据=新的LinqMetaData(适配器);
var query=来自metaData.Axs中的axsEntity
在元数据中加入accountEntity。axsEntity.AccountId上的帐户等于accountEntity.AccountId
哪里
(axsEntity.DateDeleted.HasValue?axsEntity.DateDeleted.Value axsEntity.date续订)&&
axsEntity.DateRenewal
一旦我尝试将其转换为.ToList(),它就会抛出一个错误
类型“System.Linq.IQueryable1[[f_uanonymoustype0
2[[Data.Rad.EntityClasses.AxsEntity,Data.Rad,Version=1.0.4125.30654,Culture=neutral,PublicKeyToken=null],[Data.Rad.EntityClasses.AccountEntity,Data.Rad,Version=1.0.4125.30654,Culture=neutral,PublicKeyToken=null]],Model.Rad,Version=1.0.0.0,Culture=neutral,PublicKeyToken=null]]”无法以任何方式转换为实体类型。是否对group by子句使用了let语句
无论如何都可以这样做。如果我在内存中按分组,它会杀死我的计算机。您不能使用groupby查询来获取实体,因为groupby查询组数据,而实体直接从表中获取