Change Image Resolution

mcoscas

Hi everybody,
I try to change the resolution of the images imported in the field Picture of the table Item.(NAV 2017 CU 30)
The different steps are:
1. Import the file into a folder located in a server (I know that the standard NAV already do this my problem is not here but in the next point)
2. Change the resolution of the image (1280*720)
3. Upload the new image to a FTP server

I wrote this code:

Path := 'C:\\draw\Tchoupi_2.gif';
DrawBitmap := DrawBitmap.Bitmap(Path);
DrawBitmap.SetResolution(1280,720);

It compiles without error but when I run it I get the following error:
A call to System.Drawing.Bitmap failed with this message: Parameter is not valid.

I try differents syntaxes for the path with \ and / but it did not help.

Is someone has an idea ?

Thanks in advance.
Michael

mcoscas

Hi Alexey,
Thanks for your help but it did not help, I tried both RunOnClient = Yes and No, no difference.
But fortunately I found the solution of my problem this morning at this link:
https://www.delftstack.com/howto/csharp/resize-an-image-in-csharp/
It seems to be that a Microsoft issue exists when you tried to save a file after changed the resolution with the function SetResolution like this:
DrawBitmap := DrawBitmap.Bitmap(Path);
DrawBitmap.SetResolution(1280,720);
DrawNewBitmap.Save(NewPath);

So I changed my code like this:

DrawImage := DrawImage.FromFile(Path);
DrawBitmap := DrawBitmap.Bitmap(DrawImage);
DrawSize := DrawSize.Size(1280,720);
DrawNewBitmap := DrawNewBitmap.Bitmap(DrawImage, DrawSize);
DrawNewBitmap.Save(NewPath);

And it works fine !

AlexeyShamin

Hello!
Your problem in line DrawBitmap := DrawBitmap.Bitmap(Path);
system cannot find file.

Can you check property RunOnClient in DrawBitmap variablre? is it set to "No"?

mcoscas

Hi Alexey,
Thanks for your help but it did not help, I tried both RunOnClient = Yes and No, no difference.
But fortunately I found the solution of my problem this morning at this link:
https://www.delftstack.com/howto/csharp/resize-an-image-in-csharp/
It seems to be that a Microsoft issue exists when you tried to save a file after changed the resolution with the function SetResolution like this:
DrawBitmap := DrawBitmap.Bitmap(Path);
DrawBitmap.SetResolution(1280,720);
DrawNewBitmap.Save(NewPath);

So I changed my code like this:

DrawImage := DrawImage.FromFile(Path);
DrawBitmap := DrawBitmap.Bitmap(DrawImage);
DrawSize := DrawSize.Size(1280,720);
DrawNewBitmap := DrawNewBitmap.Bitmap(DrawImage, DrawSize);
DrawNewBitmap.Save(NewPath);

And it works fine !

JJMc

What variable did you create to use DrawImage?

mcoscas

Hi,
Here the variables:
DrawBitmap DotNet System.Drawing.Bitmap.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
DrawNewBitmap DotNet System.Drawing.Bitmap.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
DrawImage DotNet System.Drawing.Image.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
DrawSize DotNet System.Drawing.Size.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'

Regards,
Michael

JJMc

mcoscas wrote: »

Hi,
Here the variables:
DrawBitmap DotNet System.Drawing.Bitmap.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
DrawNewBitmap DotNet System.Drawing.Bitmap.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
DrawImage DotNet System.Drawing.Image.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
DrawSize DotNet System.Drawing.Size.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'

Regards,
Michael

Thank you ever so much.
And do you know if there is a way to convert from jpg to bmp?