OK

Ministreliy/Components/Pages/DatabaseType.razor

@@ -144,6 +144,7 @@ else
             //id_type = listDT.Count + 1;
             var a = listDT.Select(listDT => listDT.Id).ToList();
             id_type = Enumerable.Range(1, int.MaxValue).FirstOrDefault(i => !a.Contains(i));
+
         }
     }
     private async Task SaveType()

Strela/Controllers/DeviceController.cs

@@ -80,4 +80,5 @@ public class DeviceController : ControllerBase
             return Ok();
         }
     }
+
 }