Bitmap Resolution setting help

[gfaryd]

Dear All,

I have an image 1200*900 using 300 dpi added as a resource in my project

im using following code

Bitmap pic = new Bitmap(Project1.Properties.Resources.Picture);

Source image resolution is 300 dpi but when i create new Bitmap object it converts its resolution
to 96 dpi. i want it to remain 300 dpi.

i dont want to use setresolution (300f,300f) becuse it zooms in information in the source file

any help

[Silent Sojourner]

You don't need to use Bitmap pic = new Bitmap(Project1.Properties.Resources.Picture);

Project1.Properties.Resources.Picture should be Image type. Say if you want to display it in a picturebox, simply write:

picturebox1.Image = Project1.Properties.Resources.Picture;

and the resolution will remain unchanged as 300dpi.

If you just store the path of the image in your resource file, first use:

Image pic = Image.FromFile(Project1.Properties.Resources.Picture);

to load the image, then write something like this:

byte[] bytes = Encoding.UTF8.GetBytes("300/1");
PropertyItem item = pic.GetPropertyItem(0x011a);//X-resolution tag defined in EXIF standard
item.Value = bytes;
pic.SetPropertyItem(item);
item =  pic.GetPropertyItem(0x011b);//Y-resolution tag defined in EXIF standard
item.Value = bytes;
pic.SetPropertyItem(item);

If you use Bitmap to load the image, you may have to use SetResolution method to change the resolution.