done clicker

WpfAppFirstProj/MainWindow.xaml

@@ -14,10 +14,10 @@
         <TextBlock x:Name="textBlockScoreIncrement" HorizontalAlignment="Left" Margin="104,109,0,0" TextWrapping="Wrap" Text="Очков за клик: 1" VerticalAlignment="Top"/>
         <Button x:Name="buttonBuyUpgrade" Content="Купить обновление" HorizontalAlignment="Left" Margin="108,155,0,0" VerticalAlignment="Top" Click="buttonBuyUpgrade_Click"/>
 
-        <TextBlock x:Name="textBlockTimerScoreIncrement" HorizontalAlignment="Left" Margin="111,229,0,0" TextWrapping="Wrap" Text="Очки за тик: 1" VerticalAlignment="Top"/>
+        <TextBlock x:Name="textBlockTimerScoreIncrement" HorizontalAlignment="Left" Margin="111,229,0,0" TextWrapping="Wrap" Text="Очки за тик: 0" VerticalAlignment="Top"/>
         <TextBlock x:Name="textBlockTimerUpgradeCost" HorizontalAlignment="Left" Margin="110,249,0,0" TextWrapping="Wrap" Text="Стоимость обновления: 20" VerticalAlignment="Top"/>
         <TextBlock HorizontalAlignment="Left" Margin="111,268,0,0" TextWrapping="Wrap" Text="Интервал таймера: 5 сек." VerticalAlignment="Top"/>
-        <Button x:Name="buttonBuyTimerUpgrade" Content="Купить обновление таймера" HorizontalAlignment="Left" Margin="115,294,0,0" VerticalAlignment="Top"/>
+        <Button x:Name="buttonBuyTimerUpgrade" Content="Купить обновление таймера" HorizontalAlignment="Left" Margin="115,294,0,0" VerticalAlignment="Top" Click="buttonBuyTimerUpgrade_Click"/>
 
     </Grid>
 </Window>

WpfAppFirstProj/MainWindow.xaml.cs

@@ -38,7 +38,7 @@ namespace WpfAppFirstProj
             clickScoreIncrement = 1;
             clickUpgradeCost = 2;
 
-            timerScoreIncrement = 1;
+            timerScoreIncrement = 0;
             timerUpgradeCost = 20;
 
             timer = new DispatcherTimer();
@@ -75,5 +75,28 @@ namespace WpfAppFirstProj
 
             textBlockScore.Text = score.ToString();
         }
+
+        private void buttonBuyTimerUpgrade_Click(object sender, RoutedEventArgs e)
+        {
+            if (score < timerUpgradeCost)
+            {
+                MessageBox.Show("У вас недостаточно очков для покупки");
+                return;
+            }
+
+            if (timer.IsEnabled == false)
+            {
+                timer.Start();
+            }
+
+            timerScoreIncrement++;
+            score -= timerUpgradeCost;
+            timerUpgradeCost *= 2;
+
+            textBlockTimerScoreIncrement.Text = $"Очки за тик: {timerScoreIncrement}";
+            textBlockTimerUpgradeCost.Text = $"Стоимость обновления: {timerUpgradeCost}";
+
+            textBlockScore.Text = score.ToString();
+        }
     }
 }