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();
}
}