Check for null before invoking DiffFile.

grokys · grokys · commit 68b6b4ca2f00 · 2018-11-28T16:02:54.000+01:00
Fixes #2082
diff --git a/src/GitHub.VisualStudio.UI/Views/GitHubPane/PullRequestFilesView.xaml.cs b/src/GitHub.VisualStudio.UI/Views/GitHubPane/PullRequestFilesView.xaml.cs
@@ -34,7 +34,11 @@ void changesTree_ContextMenuOpening(object sender, ContextMenuEventArgs e)
         void changesTree_MouseDoubleClick(object sender, MouseButtonEventArgs e)
         {
             var file = (e.OriginalSource as FrameworkElement)?.DataContext as IPullRequestFileNode;
-            (DataContext as IPullRequestFilesViewModel)?.DiffFile.Execute(file);
+
+            if (file != null)
+            {
+                (DataContext as IPullRequestFilesViewModel)?.DiffFile.Execute(file);
+            }
         }
 
         void changesTree_MouseRightButtonDown(object sender, MouseButtonEventArgs e)

Original file line number	Diff line number	Diff line change
`@@ -34,7 +34,11 @@ void changesTree_ContextMenuOpening(object sender, ContextMenuEventArgs e)`
`34`	`34`	`void changesTree_MouseDoubleClick(object sender, MouseButtonEventArgs e)`
`35`	`35`	`{`
`36`	`36`	`var file = (e.OriginalSource as FrameworkElement)?.DataContext as IPullRequestFileNode;`
`37`		`- (DataContext as IPullRequestFilesViewModel)?.DiffFile.Execute(file);`
	`37`	`+`
	`38`	`+ if (file != null)`
	`39`	`+ {`
	`40`	`+ (DataContext as IPullRequestFilesViewModel)?.DiffFile.Execute(file);`
	`41`	`+ }`
`38`	`42`	`}`
`39`	`43`
`40`	`44`	`void changesTree_MouseRightButtonDown(object sender, MouseButtonEventArgs e)`