WPF & C# - Image 형변환 모음 ( Bitmap / BitmapImage / MemoryStream / FrameworkElement / Controls.Image / Byte[] )

WPF & C# - Image 형변환 모음 ( Bitmap / BitmapImage / MemoryStream / FrameworkElement /  Controls.Image / Byte[] )

Bitmap > MemoryStream > BitmapImage

using System.Drawing;

Bitmap bitmap = new Bitmap(this.Width, this.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
 
// Bitmap 담을 메모리스트림 준비
MemoryStream ms = new MemoryStream();   // 초기화
bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);   // 
 
// BitmapImage 로 변환
var bi = new BitmapImage();
bi.BeginInit();
bi.StreamSource = ms;
bi.CacheOption = BitmapCacheOption.OnLoad;
bi.EndInit();

(확인완료)

BitmapImage > Byte | Bitmap2Byte | BitmapToByte

public Byte[] ImageToByte(BitmapImage imageSource)
{
    Stream stream = imageSource.StreamSource;
    Byte[] buffer = null;
    if (stream != null && stream.Length > 0)
    {
        using (BinaryReader br = new BinaryReader(stream))
        {
            buffer = br.ReadBytes((Int32)stream.Length);
        }
    }
 
    return buffer;
}

byte[] data = null;
 
using(MemoryStream ms = new MemoryStream())
{
    bitmapImage.Save(ms);
    data = ms.ToArray();
}

출처 : https://stackoverflow.com/questions/6597676/bitmapimage-to-byte

Byte[] > BitmapImage | Byte2Bitmap | ByteToBitmap

byte[] buffer = ...;
 
var width = 100; // for example
var height = 100; // for example
var dpiX = 96d;
var dpiY = 96d;
var pixelFormat = PixelFormats.Pbgra32; // for example
var bytesPerPixel = (pixelFormat.BitsPerPixel + 7) / 8;
var stride = bytesPerPixel * width;
 
var bitmap = BitmapSource.Create(width, height, dpiX, dpiY, pixelFormat, null, buffer, stride);

https://stackoverflow.com/questions/15270844/how-can-i-convert-byte-to-bitmapimage

Byte[] > Controls.Image | Byte2Image | ByteToImage

private static BitmapImage Byte2ControlsImage(byte[] imageData)
{
    if (imageData == null || imageData.Length == 0) return null;
    var image = new BitmapImage();
    using (var mem = new MemoryStream(imageData))
    {
        mem.Position = 0;
        image.BeginInit();
        image.CreateOptions = BitmapCreateOptions.PreservePixelFormat;
        image.CacheOption = BitmapCacheOption.OnLoad;
        image.UriSource = null;
        image.StreamSource = mem;
        image.EndInit();
    }
    image.Freeze();
    return image;
}

(확인완료)

https://stackoverflow.com/questions/9564174/convert-byte-array-to-image-in-wpf

FrameworkElement > BitmapImage

private static RenderTargetBitmap Element2BitmapImage(FrameworkElement element)
{
    DrawingVisual drawingVisual = new DrawingVisual();
    DrawingContext drawingContext = drawingVisual.RenderOpen();
    drawingContext.DrawRectangle(new VisualBrush(element), null, new Rect(new Point(0, 0), new Point(element.ActualWidth, element.ActualHeight)));
    drawingContext.Close();
 
    RenderTargetBitmap target = new RenderTargetBitmap((int)element.ActualWidth, (int)element.ActualHeight, 96, 96, System.Windows.Media.PixelFormats.Pbgra32);
 
    target.Render(drawingVisual);
    return target;
}

출처 : https://blog.naver.com/seokcrew/30114201157

Uri > byte[] | Uri2Byte | UriToByte

byte[] imageBytes = null;
using (MemoryStream ms = new MemoryStream())
{
    System.Windows.Media.Imaging.BmpBitmapEncoder bbe = new BmpBitmapEncoder();
    bbe.Frames.Add(BitmapFrame.Create(new Uri(img.Source.ToString(), UriKind.RelativeOrAbsolute)));
    bbe.Save(ms);
    imageBytes = ms.ToArray();
}