WPF(C#)中Bitmap与BitmapImage相互转换
2021-01-24 08:17
标签:new this 转换 图片 pca www empty poi bit
一、WPF的Image控件中设置ImageSource 还可以使用: 还可以使用: 二、Bitmap转BitmapImage 三、Bitmap转BitmapSource 四、BitmapSource转Bitmap WPF(C#)中Bitmap与BitmapImage相互转换 标签:new this 转换 图片 pca www empty poi bit 原文地址:https://www.cnblogs.com/lonelyxmas/p/12052140.htmlimage1.Source = new BitmapImage(new Uri(@"image file path", Urikind.RelativeOrAbsolute));
System.IO.FileStream fs = new System.IO.FileStream(filepath, System.IO.FileMode.Open, System.IO.FileAccess.Read);
byte[] buffer = new byte[fs.Length]; fs.Read(buffer, 0, buffer.Length);
fs.Close(); fs.Dispose();
System.IO.MemoryStream ms = new System.IO.MemoryStream(buffer);
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.BeginInit();
bitmapImage.StreamSource = ms;
bitmapImage.CacheOption = BitmapCacheOption.OnLoad; bitmapImage.EndInit();
ms.Dispose();
image1.Source = bitmapImage;
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.BeginInit();
bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
bitmapImage.UriSource = new Uri(szPath);//szPath为图片的全路径
bitmapImage.EndInit();
bitmapImage.Freeze();
image1.Source = bitmapImage;
先将Bitmap储存成memorystream,然后指定给BitmapImageprivate BitmapImage BitmapToBitmapImage(System.Drawing.Bitmap bitmap)
{
BitmapImage bitmapImage = new BitmapImage();
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
bitmap.Save(ms, bitmap.RawFormat);
bitmapImage.BeginInit();
bitmapImage.StreamSource = ms;
bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
bitmapImage.EndInit();
bitmapImage.Freeze();
}
return bitmapImage;
}
image1.Source = BitmapToBitmapImage(bitmap);
/*-------------------------------------------------------------------------
//Imaging.CreateBitmapSourceFromHBitmap方法,基于所提供的非托管位图和调色板信息的指针,
//返回一个托管的BitmapSource
---------------------------------------------------------------------------*/
Bitmap bitmap = CaptureScreen.GetDesktopImage();
IntPtr ip = bitmap.GetHbitmap();//从GDI+ Bitmap创建GDI位图对象
BitmapSource bitmapSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(ip, IntPtr.Zero, Int32Rect.Empty,
System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions());
image1.Source = bitmapSource;
BitmapSource m = (BitmapSource)image1.Source;
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(m.PixelWidth, m.PixelHeight, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
System.Drawing.Imaging.BitmapData data = bmp.LockBits(
new System.Drawing.Rectangle(System.Drawing.Point.Empty, bmp.Size), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
m.CopyPixels(Int32Rect.Empty, data.Scan0, data.Height * data.Stride, data.Stride); bmp.UnlockBits(data);
文章标题:WPF(C#)中Bitmap与BitmapImage相互转换
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