C#•6mo ago

png image but background is not transparent

Can somebody help me out? The original image is attached

16 Replies

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•6mo ago

What exactly are you trying to do? Just posting two pictures and saying "background is not transparent" doesn't give anyone useful info.

BlckViperOP•6mo ago

        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;
        }

If that helps kind a bit

Keswiik•6mo ago

Is this WPF? WinForms?

BlckViperOP•6mo ago

c# win forms with .net

Keswiik•6mo ago

What is the background color of your picturebox?

Buddy•6mo ago

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

BlckViperOP•6mo ago

Should be transparent. Yeah i think thats the problem i‘m running into :hidethepain:

Buddy•6mo ago

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

BlckViperOP•6mo ago

Hm, I‘ll try it later after I‘m home from work :harold: But it isn't a button. Can you show me with a little snippet what you mean? 😄

Buddy•6mo ago

Button has nothing to do with it all controls have a BackColor property

BlckViperOP•6mo ago

Okay Can you give me a little snippet of what you mean? Like insert it into the snippet if its that what you mean?

Buddy•6mo ago

No. Read the docs

BlckViperOP•6mo ago

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

Motley•6mo ago

Pretty sure you don't actually want 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. 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•6mo ago

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

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png image but background is not transparent