Casting error in Get and GetAsync methods (issue #262) (#263)

* issue262

#262

* Fix GetAsync method (#262)

* Update DapperAsyncExtensions.cs

* Update DapperAsyncExtensions.cs

Co-authored-by: Valfrid Couto <[email protected]>

Author: hfrances

DapperExtensions/DapperAsyncImplementor.cs

@@ -140,7 +140,7 @@ public async Task<bool> DeleteAsync<T>(IDbConnection connection, object predicat
         public async Task<T> GetAsync<T>(IDbConnection connection, dynamic id, IDbTransaction transaction = null, int? commandTimeout = null, bool buffered = false,
             IList<IProjection> colsToSelect = null, IList<IReferenceMap> includedProperties = null) where T : class
         {
-            return await Task.FromResult(InternalGet<T>(connection, id, transaction, commandTimeout, colsToSelect, includedProperties));
+            return await Task.FromResult((T)InternalGet<T>(connection, id, transaction, commandTimeout, colsToSelect, includedProperties));
         }
 
         /// <summary>

DapperExtensions/DapperImplementor.cs

@@ -58,7 +58,7 @@ public DapperImplementor(ISqlGenerator sqlGenerator)
 
         public T Get<T>(IDbConnection connection, dynamic id, IDbTransaction transaction, int? commandTimeout, IList<IReferenceMap> includedProperties = null) where T : class
         {
-            return InternalGet<T>(connection, id, transaction, commandTimeout, null, includedProperties);
+            return (T)InternalGet<T>(connection, id, transaction, commandTimeout, null, includedProperties);
         }
 
         public TOut GetPartial<TIn, TOut>(IDbConnection connection, Expression<Func<TIn, TOut>> func, dynamic id, IDbTransaction transaction, int? commandTimeout, IList<IReferenceMap> includedProperties = null) where TIn : class where TOut : class
@@ -770,7 +770,7 @@ protected void InternalUpdate<T>(IDbConnection connection, IEnumerable<T> entiti
 
         protected T InternalGet<T>(IDbConnection connection, dynamic id, IDbTransaction transaction, int? commandTimeout, IList<IProjection> colsToSelect, IList<IReferenceMap> includedProperties = null) where T : class
         {
-            IEnumerable<T> result = InternalGetListAutoMap<T>(connection, id, null, transaction, commandTimeout, true, colsToSelect, includedProperties);
+            var result = (IEnumerable<T>)InternalGetListAutoMap<T>(connection, id, null, transaction, commandTimeout, true, colsToSelect, includedProperties);
             return result.SingleOrDefault();
         }