public async Task OnRgChanged(string value) { if (value != null) { Model.ResorceGroup = value; Model.VmName = null; Model.VmState = null; LastVmStatus = null; ShowLoading(); var vms = await VmService.GetVmNames(Model.SubcriptionId, Model.ResorceGroup); Vms = vms ?? new List <string>(); HideLoading(); } }