C#•2y ago

png image but background is not transparent

Can somebody help me out?
The original image is attached

BlckViperOP•6/18/24, 7:59 PM

I have a problem.

I have a png but the background is not transparent as presented in the attached img.

If you have an answer please ping me ^^ :pepeOkayThumb:

Keswiik•6/18/24, 7:59 PM

What exactly are you trying to do?

Keswiik•6/18/24, 7:59 PM

Just posting two pictures and saying "background is not transparent" doesn't give anyone useful info.

BlckViperOP•6/18/24, 8:00 PM

        public void ShowImage(string imagePath)
        {
            Bitmap image = new Bitmap(imagePath);

            
            image.MakeTransparent(Color.Transparent);

            PictureBox pictureBox = new PictureBox
            {
                Image = image,
                SizeMode = PictureBoxSizeMode.AutoSize, 
                
            };
            this.Controls.Add(pictureBox);
            this.ClientSize = pictureBox.Size;
        }

        public void ShowImage(string imagePath)
        {
            Bitmap image = new Bitmap(imagePath);

            
            image.MakeTransparent(Color.Transparent);

            PictureBox pictureBox = new PictureBox
            {
                Image = image,
                SizeMode = PictureBoxSizeMode.AutoSize, 
                
            };
            this.Controls.Add(pictureBox);
            this.ClientSize = pictureBox.Size;
        }

BlckViperOP•6/18/24, 8:00 PM

If that helps kind a bit

Keswiik•6/18/24, 8:00 PM

Is this WPF? WinForms?

BlckViperOP•6/18/24, 8:00 PM

c# win forms with .net

Keswiik•6/18/24, 8:03 PM

What is the background color of your picturebox?

Buddy•6/18/24, 8:09 PM

Winforms doesn't exactly support transparency, not very well at least.

KKeswiik What is the background color of your picturebox?

BlckViperOP•6/18/24, 9:31 PM

Should be transparent.

BBuddy Winforms doesn't exactly support transparency, not very well at least.

BlckViperOP•6/18/24, 9:31 PM

Yeah i think thats the problem i‘m running into :hidethepain:

BBlckViper ```cs public void ShowImage(string imagePath) { Bit...

Buddy•6/18/24, 9:33 PM

Set the BackColor to transparent too

Buddy•6/18/24, 9:33 PM

https://learn.microsoft.com/en-us/dotnet/desktop/winforms/controls/how-to-give-your-control-a-transparent-background?view=netframeworkdesktop-4.8

BlckViperOP•6/19/24, 4:56 AM

Hm, I‘ll try it later after I‘m home from work :harold:

BBuddy Set the BackColor to transparent too

BlckViperOP•6/19/24, 8:08 PM

But it isn't a button.
Can you show me with a little snippet what you mean?

Buddy•6/19/24, 8:09 PM

Button has nothing to do with it

Buddy•6/19/24, 8:09 PM

all controls have a BackColor property

BlckViperOP•6/19/24, 8:09 PM

Okay

BlckViperOP•6/19/24, 8:10 PM

Can you give me a little snippet of what you mean?

Like insert it into the snippet if its that what you mean?

Buddy•6/19/24, 8:11 PM

No.

Buddy•6/19/24, 8:11 PM

Read the docs

BBuddy Read the docs

BlckViperOP•6/20/24, 3:12 PM

Thanks a lot for your comment but the parameter with .BackColor = Color.Transparent doesn't work

Motley•6/20/24, 9:46 PM

Pretty sure you don't actually want

image.MakeTransparent(Color.Transparent);

image.MakeTransparent(Color.Transparent);

you use that to make a color that is NOT already transparent into a transparent color. For example changing solid pure white to transparent. It has been a long time since I've dealt with this, so take that with a grain of salt.

Motley•6/20/24, 9:49 PM

Also, why add a picturebox to the control isntead of just setting the background of the control? If you really need the picturebox, then make the picturebox background transparent too at the very least.

BlckViperOP•6/22/24, 11:40 AM

@Motley I think I already tried that but it doesn’t work

public void ShowImage(string imagePath) { Bitmap image = new Bitmap(imagePath); image.MakeTransparent(Color.Transparent); PictureBox pictureBox = new PictureBox { Image = image, SizeMode = PictureBoxSizeMode.AutoSize, }; this.Controls.Add(pictureBox); this.ClientSize = pictureBox.Size; }