* Prevent the user from doing weird things

CodeDead · CodeDead · commit 5a97742ca4e7 · 2018-09-04T01:30:54.000+02:00
diff --git a/Advanced PortChecker/Windows/MainWindow.xaml.cs b/Advanced PortChecker/Windows/MainWindow.xaml.cs
@@ -171,6 +171,12 @@ private void ControlsEnabled(bool enabled)
         private void BtnScan_Click(object sender, RoutedEventArgs e)
         {
             if (IntStart.Value == null || IntStop.Value == null) return;
+            if (IntStart.Value > IntStop.Value)
+            {
+                MessageBox.Show("The starting port cannot be greater than the ending port!", "Advanced PortChecker", MessageBoxButton.OK, MessageBoxImage.Error);
+                return;
+            }
+
             if (_operations != null && _operations.Count > 0)
             {
                 MessageBox.Show("A previous scan is still running or in the process of being cancelled!", "Advanced PortChecker", MessageBoxButton.OK, MessageBoxImage.Error);

Original file line number	Diff line number	Diff line change
`@@ -171,6 +171,12 @@ private void ControlsEnabled(bool enabled)`
`171`	`171`	`private void BtnScan_Click(object sender, RoutedEventArgs e)`
`172`	`172`	`{`
`173`	`173`	`if (IntStart.Value == null \|\| IntStop.Value == null) return;`
	`174`	`+ if (IntStart.Value > IntStop.Value)`
	`175`	`+ {`
	`176`	`+ MessageBox.Show("The starting port cannot be greater than the ending port!", "Advanced PortChecker", MessageBoxButton.OK, MessageBoxImage.Error);`
	`177`	`+ return;`
	`178`	`+ }`
	`179`	`+`
`174`	`180`	`if (_operations != null && _operations.Count > 0)`
`175`	`181`	`{`
`176`	`182`	`MessageBox.Show("A previous scan is still running or in the process of being cancelled!", "Advanced PortChecker", MessageBoxButton.OK, MessageBoxImage.Error);`