How about: using MColor = System.Windows.Media.Color; using DColor = System.Drawing.Color; … public static MColor ToMediaColor(this DColor color) { return MColor.FromArgb(color.A, color.R, color.G, color.B); } EDIT: Fixed the ‘unpacking’ of the ARGB.
A screenshot is a shot of the screen… everything on the screen. What you want is to save an image from a single UIElement and you can do that using the RenderTargetBitmap.Render Method. This method takes a Visual input parameter and luckily, that is one of the base classes for all UIElements. So assuming that … Read more
The option I used to workaround this problem was: Graphics graphics = new Graphics(); graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.SingleBitPerPixelGridFit; There are some others useful options in TextRenderingHint Hope it helps
There is an excellent blog post including C# code about using the ImageMagick graphics library through Interop over at TopTen Software Blog. This post deals specifically with running ASP.net on linux under mono; however, the C# code should be perfectly copy-paste-able, the only thing you’ll need to change is the Interop attributes if you are … Read more
Use the SolidBrush class: using (SolidBrush brush = new SolidBrush(yourColor)) { // … }
While I still did not find out the reason what exactly caused the error when saving the image, I found a workaround to apply: const string i1Path = @”c:\my\i1.jpg”; const string i2Path = @”c:\my\i2.jpg”; var i = Image.FromFile(i1Path); var i2 = new Bitmap(i); i2.Save(i2Path, ImageFormat.Jpeg); I.e. by copying the image internally into a Bitmap instance … Read more
Description The Bitmap is derived from Image so you can use Icon’s .ToBitmap() method. Sample Icon IEIcon = Icon.ExtractAssociatedIcon(@”C:\Program Files\Internet Explorer\iexplore.exe”); Image im = IEIcon.ToBitmap(); More Information MSDN – Bitmap Class MSDN – Image Class
Disclaimer: This is my software. I’m working on a cross-platform 2D Graphics library that runs on .NET Core It’s currently alpha but already supports a comprehensive feature set. https://github.com/JimBobSquarePants/ImageSharp Example usage. using (FileStream stream = File.OpenRead(“foo.jpg”)) using (FileStream output = File.OpenWrite(“bar.jpg”)) { Image image = new Image(stream); image.Resize(image.Width / 2, image.Height / 2) .Greyscale() .Save(output); … Read more
When either a Bitmap object or an Image object is constructed from a file, the file remains locked for the lifetime of the object. As a result, you cannot change an image and save it back to the same file where it originated. http://support.microsoft.com/?id=814675 A generic error occurred in GDI+, JPEG Image to MemoryStream Image.Save(..) … Read more
This should do it. private void resizeImage(string path, string originalFilename, /* note changed names */ int canvasWidth, int canvasHeight, /* new */ int originalWidth, int originalHeight) { Image image = Image.FromFile(path + originalFilename); System.Drawing.Image thumbnail = new Bitmap(canvasWidth, canvasHeight); // changed parm names System.Drawing.Graphics graphic = System.Drawing.Graphics.FromImage(thumbnail); graphic.InterpolationMode = InterpolationMode.HighQualityBicubic; graphic.SmoothingMode = SmoothingMode.HighQuality; graphic.PixelOffsetMode = … Read more