public List <TDocument> Search(Expression <Func <TDocument, bool> > filter, MongoPager pager = null)
{
if (filter == null)
{
return(null);
}
var docs = GetCollection();
var task = docs.Find <TDocument>(filter);
if (pager != null)
{
task = task.Skip((pager.PageNo - 1) * pager.PageSize).Limit(pager.PageSize);
}
var taskResult = task.ToListAsync();
taskResult.Wait();
return(taskResult.Result);
}
public List <TOutput> Search <TOutput>(Expression <Func <TOutput, bool> > filter, MongoPager pager = null) where TOutput : TDocument
{
if (filter == null)
{
return(null);
}
var docs = GetCollection <TOutput>();
var task = docs.Find <TOutput>(filter);
if (pager != null)
{
task = task.Skip((pager.PageNo - 1) * pager.PageSize).Limit(pager.PageSize);
}
var taskResult = task.ToListAsync();
taskResult.Wait();
return(taskResult.Result);
//泛型列表向下转型例子
//List<TOutput> outputList = docList.ConvertAll<TOutput>(new Converter<TDocument, TOutput>(o => (o as TOutput)));
}