Check vehice == null khi api trả về null

2020-06-25 10:42:26 +07:00
parent effa22abc9
commit b71846e3c9
1 changed files with 4 additions and 0 deletions
--- a/AIParkingApplication/Statistic.cs
+++ b/AIParkingApplication/Statistic.cs
@@ -44,6 +44,10 @@ namespace AIParkingApplication
                HttpResponseMessage response = await client.GetAsync("/api/statistics");
                response.EnsureSuccessStatusCode();
                var vehicle = await response.Content.ReadAsAsync<Vehicle>();
+                if(vehicle == null)
+                {
+                    return;
+                }
                lblSoLuongXeMay.Invoke(new Action(() =>
                {
                    lblSoLuongXeMay.Text = vehicle.NumberOfMoto.ToString();