在 C# 中将原始图像转换为位图
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/17956960/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Convert raw images to bitmap in c#
提问by
My code currently looks like this:
我的代码目前看起来像这样：
if (fe == "CR2")
{
Image img = null;
byte[] ba = File.ReadAllBytes(open.FileName);
using (Image raw = Image.FromStream(new MemoryStream(ba)))
{
img = raw;
}
Bitmap bm = new Bitmap(img);
pictureBox1.Image = bm;
statusl.Text = fe;
}
When I open a RAW image the program stops and Visual Studio says:
当我打开 RAW 图像时，程序停止并且 Visual Studio 说：
Parameter is not valid: Image raw = Image.FromStream(new MemoryStream(ba))
参数无效：Image raw = Image.FromStream(new MemoryStream(ba))
Please help! How can I get a RAW file to show in a PictureBox ?
请帮忙！如何让 RAW 文件显示在 PictureBox 中？
采纳答案by Martijn van Put
Create the bitmap like this:
像这样创建位图：
Bitmap bmp = (Bitmap) Image.FromFile(open.FileName);
or without using bitmap:
或不使用位图：
this.pictureBox1.Image = Image.FromFile(open.FileName);
Example WPF:
示例 WPF：
BitmapDecoder bmpDec = BitmapDecoder.Create(new Uri(origFile),
BitmapCreateOptions.DelayCreation, BitmapCacheOption.None);
BitmapEncoder bmpEnc = new BmpBitmapEncoder();
bmpEnc.Frames.Add(bmpDec.Frames[0]);
Stream ms = new MemoryStream();
bmpEnc.Save(ms);
Image srcImage = Bitmap.FromStream(ms);
回答by Sriram Sakthivel
You're actually disposing an Image by specifying using (Image raw = Image.FromStream(new MemoryStream(ba)))later assigning the Disposedinstance of image to pictureboxwhich leads to this exception. To make to work you've to either don't dispose or clone the image.
您实际上是通过指定using (Image raw = Image.FromStream(new MemoryStream(ba)))稍后分配导致此异常Disposed的图像实例来处理图像picturebox。为了工作，您必须不处理或克隆图像。
Bitmap raw = Image.FromStream(new MemoryStream(ba) as Bitmap;
pictureBox1.Image = raw;
Or simply Clone
或者干脆克隆
using (Image raw = Image.FromStream(new MemoryStream(ba)))
{
img = raw.Clone() as Bitmap;
}
Both of the above should work
以上两个都应该工作
回答by MHAnbar
you try this code :
你试试这个代码：
private static void SaveImageToRawFile(string strDeviceName, Byte[] Image, int nImageSize)
{
string strFileName = strDeviceName;
strFileName += ".raw";
FileStream vFileStream = new FileStream(strFileName, FileMode.Create);
BinaryWriter vBinaryWriter = new BinaryWriter(vFileStream);
for (int vIndex = 0; vIndex < nImageSize; vIndex++)
{
vBinaryWriter.Write((byte)Image[vIndex]);
}
vBinaryWriter.Close();
vFileStream.Close();
}
private static void LoadRawFile(string strDeviceName, out Byte[] Buffer)
{
FileStream vFileStream = new FileStream(strDeviceName, FileMode.Open);
BinaryReader vBinaryReader = new BinaryReader(vFileStream);
Buffer = new Byte[vFileStream.Length];
Buffer = vBinaryReader.ReadBytes(Convert.ToInt32(vFileStream.Length));
vBinaryReader.Close();
vFileStream.Close();
}
