Constant error in .net framework app image resizing

[yauhenikh]

I have this method in my asp .net framework app for image resizing:

public static void SaveImageWithNewSize(int newWidth, string filePathName, string savePathName, int quality)
{
  using (var image = Image.NewFromFile(filePathName))
  {
    var scale = (double)newWidth / image.Width;
    var resized = image.Resize(scale);

    resized.WriteToFile(savePathName, new VOption
    {
      {"Q", quality}
    });
  }
}

And I always get error
NetVips.VipsException: unable to call VipsForeignSaveJpegFile
{savePathName}: unable to open for write
system error: Invalid argument

When I use other image libraries (magick.net, system.drawing, skiasharp etc.) in the similar method, there are no errors, resizing is working.
But I want to try netvips library.

Can you help me?
Thanks

[yauhenikh]

Fixed, used

var image = Image.NewFromBuffer(File.ReadAllBytes(filePathName))
instead of
var image = Image.NewFromFile(filePathName)

[kleisauke]

Sounds like a similar issue as #239.

FWIW, as mentioned in #97 (comment) I recommend using the static Image.Thumbnail* functions instead of Resize or ThumbnailImage.

@@ -1,13 +1,9 @@
 public static void SaveImageWithNewSize(int newWidth, string filePathName, string savePathName, int quality)
 {
-  using (var image = Image.NewFromFile(filePathName))
+  using var thumb = Image.Thumbnail(filePathName, newWidth);
+  // Or: using var thumb = Image.ThumbnailBuffer(File.ReadAllBytes(filePathName), newWidth);
+  thumb.WriteToFile(savePathName, new VOption
   {
-    var scale = (double)newWidth / image.Width;
-    var resized = image.Resize(scale);
-
-    resized.WriteToFile(savePathName, new VOption
-    {
-      {"Q", quality}
-    });
-  }
+    {"Q", quality}
+  });
 }