We formerly used reflection to create linq queries, e.g. for the GetById method:
private IQueryable<T> GetQueryById(TKey id)
{
var query = _dbset; //DbSet<T>
var keyNames = _context.Model
.FindRuntimeEntityType(typeof(T))
.FindPrimaryKey()
.Properties
.Select(x => x.Name)
.ToList();
if (keyNames.Count() == 1)
{
query = query.Where(e => e.GetType().GetProperty(keyNames[0]).GetValue(e, null)
.Equals(id)); //throws error
}
return query;
}
This does not seem to work any more in EF Core 3:
The LINQ expression 'DbSet .Where(c => c.GetType().GetProperty(__get_Item_0).GetValue( obj: c, index: null).Equals((object)__id_1))' could not be translated.
Is it possible to rewrite the query so that EF Core does not complain?
Aucun commentaire:
Enregistrer un commentaire