Proper type conversion.

Author: cincuranet

Provider/src/FirebirdSql.Data.FirebirdClient/FirebirdClient/FbDatabaseInfo.cs

@@ -473,7 +473,7 @@ private T GetValue<T>(byte item)
 				IscCodes.isc_info_end
 			};
 			var info = Connection.InnerConnection.Database.GetDatabaseInfo(items);
-			return info.Any() ? (T)info[0]: default;
+			return info.Any() ? ConvertValue<T>(info[0]): default;
 		}
 		private async Task<T> GetValueAsync<T>(byte item, CancellationToken cancellationToken = default)
 		{
@@ -485,7 +485,7 @@ private async Task<T> GetValueAsync<T>(byte item, CancellationToken cancellation
 				IscCodes.isc_info_end
 			};
 			var info = await Connection.InnerConnection.Database.GetDatabaseInfoAsync(items, cancellationToken).ConfigureAwait(false);
-			return info.Any() ? (T)info[0] : default;
+			return info.Any() ? ConvertValue<T>(info[0]) : default;
 		}
 
 		private List<T> GetList<T>(byte item)
@@ -499,7 +499,7 @@ private List<T> GetList<T>(byte item)
 					IscCodes.isc_info_end
 				};
 
-			return (db.GetDatabaseInfo(items)).Cast<T>().ToList();
+			return (db.GetDatabaseInfo(items)).Select(ConvertValue<T>).ToList();
 		}
 		private async Task<List<T>> GetListAsync<T>(byte item, CancellationToken cancellationToken = default)
 		{
@@ -512,9 +512,11 @@ private async Task<List<T>> GetListAsync<T>(byte item, CancellationToken cancell
 					IscCodes.isc_info_end
 				};
 
-			return (await db.GetDatabaseInfoAsync(items, cancellationToken).ConfigureAwait(false)).Cast<T>().ToList();
+			return (await db.GetDatabaseInfoAsync(items, cancellationToken).ConfigureAwait(false)).Select(ConvertValue<T>).ToList();
 		}
 
+		static T ConvertValue<T>(object value) => value is IConvertible ? (T)Convert.ChangeType(value, typeof(T)) : (T)value;
+
 		#endregion
 	}
 }