/// <summary>
/// 压缩文件
/// /// </summary>
/// <param name="dir">文件目录</param>
/// <param name="zipfilename">zip文件名</param>
public void compressFiles(string[] filenames, string zipfilename)
{
//try
//{
// using (ZipOutputStream s = new ZipOutputStream(File.Create(zipfilename)))
// {
// s.SetLevel(9); // 0 - store only to 9 - means best compression 压缩等级
// byte[] buffer = new byte[4096];
// foreach (string file in filenames)
// {
// string elDir = System.IO.Path.GetDirectoryName(file);
// string userName = System.Web.Configuration.WebConfigurationManager.AppSettings["el_share_authenticate_username"];
// string password = System.Web.Configuration.WebConfigurationManager.AppSettings["el_share_authenticate_password"];
// uint r = WNetConnectionHelper.WNetAddConnection(userName, password, elDir, null);
// ZipEntry entry = new ZipEntry(Path.GetFileName(file));
// entry.DateTime = DateTime.Now;
// s.PutNextEntry(entry);
// using (FileStream fs = File.OpenRead(file))
// {
// int sourceBytes;
// do
// {
// sourceBytes = fs.Read(buffer, 0, buffer.Length);
// s.Write(buffer, 0, sourceBytes);
// } while (sourceBytes > 0);
// }
// }
// s.Finish();
// s.Close();
// }
//}
//catch(Exception EX)
//{
//}
System.Drawing.Imaging.ImageCodecInfo myImageCodecInfo;
System.Drawing.Imaging.Encoder myEncoder;
System.Drawing.Imaging.EncoderParameter myEncoderParameter;
System.Drawing.Imaging.EncoderParameters myEncoderParameters;
// Get an ImageCodecInfo object that represents the JPEG codec.
myImageCodecInfo = GetEncoderInfo("image/jpeg");
// Create an Encoder object based on the GUID
// for the Quality parameter category.
myEncoder = System.Drawing.Imaging.Encoder.Quality;
// Create an EncoderParameters object.
// An EncoderParameters object has an array of EncoderParameter
// objects. In this case, there is only one
// EncoderParameter object in the array.
myEncoderParameters = new System.Drawing.Imaging.EncoderParameters(1);
// Save the bitmap as a JPEG file with 给定的 quality level
//压缩等级，0到100，0 最差质量，100 最佳</param>
myEncoderParameter = new System.Drawing.Imaging.EncoderParameter(myEncoder, 30L);
myEncoderParameters.Param[0] = myEncoderParameter;
try
{
using (ZipOutputStream s = new ZipOutputStream(File.Create(zipfilename)))
{
s.SetLevel(9); // 0 - store only to 9 - means best compression 压缩等级
foreach (string file in filenames)
{
string elDir = System.IO.Path.GetDirectoryName(file);
string userName = System.Web.Configuration.WebConfigurationManager.AppSettings["el_share_authenticate_username"];
string password = System.Web.Configuration.WebConfigurationManager.AppSettings["el_share_authenticate_password"];
uint r = WNetConnectionHelper.WNetAddConnection(userName, password, elDir, null);
ZipEntry entry = new ZipEntry(Path.GetFileName(file));
entry.DateTime = DateTime.Now;
s.PutNextEntry(entry);
using (MemoryStream ms = new MemoryStream())
{
using (System.Drawing.Image img = System.Drawing.Image.FromFile(file))
{
img.Save(ms, myImageCodecInfo, myEncoderParameters);
byte[] buffer = ms.GetBuffer();
long byteLength = buffer.Length;
long leftByterLength = byteLength;
int startIndex = 0;
int wirteByteLength = 0;
while (leftByterLength > 0)
{
wirteByteLength = leftByterLength >= 4096 ? 4096 : (int)leftByterLength;
s.Write(buffer, startIndex, wirteByteLength);
leftByterLength = leftByterLength - wirteByteLength;
startIndex = startIndex + wirteByteLength;
}
}
}
WNetConnectionHelper.WNetCancelConnection(userName, 1, true);
}
s.Finish();
s.Close();
}
}
catch (Exception EX)
{
}
}
/// <summary>
/// 压缩文件
/// /// </summary>
/// <param name="dir">文件目录</param>
/// <param name="zipfilename">zip文件名</param>
public void compressFiles(string[] filenames, string zipfilename)
{
System.Drawing.Imaging.ImageCodecInfo myImageCodecInfo;
System.Drawing.Imaging.Encoder myEncoder;
System.Drawing.Imaging.EncoderParameter myEncoderParameter;
System.Drawing.Imaging.EncoderParameters myEncoderParameters;
// Get an ImageCodecInfo object that represents the JPEG codec.
myImageCodecInfo = GetEncoderInfo("image/jpeg");
// Create an Encoder object based on the GUID
// for the Quality parameter category.
myEncoder = System.Drawing.Imaging.Encoder.Quality;
// Create an EncoderParameters object.
// An EncoderParameters object has an array of EncoderParameter
// objects. In this case, there is only one
// EncoderParameter object in the array.
myEncoderParameters = new System.Drawing.Imaging.EncoderParameters(1);
// Save the bitmap as a JPEG file with 给定的 quality level
//压缩等级，0到100，0 最差质量，100 最佳</param>
myEncoderParameters = new System.Drawing.Imaging.EncoderParameters(1);
myEncoderParameter = new System.Drawing.Imaging.EncoderParameter(myEncoder, 30L);
myEncoderParameters.Param[0] = myEncoderParameter;
try
{
using (ZipOutputStream s = new ZipOutputStream(File.Create(zipfilename)))
{
s.SetLevel(9); // 0 - store only to 9 - means best compression 压缩等级
foreach (string file in filenames)
{
string elDir = System.IO.Path.GetDirectoryName(file);
string userName = System.Web.Configuration.WebConfigurationManager.AppSettings["el_share_authenticate_username"];
string password = System.Web.Configuration.WebConfigurationManager.AppSettings["el_share_authenticate_password"];
uint r = WNetConnectionHelper.WNetAddConnection(userName, password, elDir, null);
ZipEntry entry = new ZipEntry(Path.GetFileName(file));
entry.DateTime = DateTime.Now;
s.PutNextEntry(entry);
//byte[] file1 = File.ReadAllBytes(file);
using (MemoryStream ms = new MemoryStream())
{
using (System.Drawing.Image img = System.Drawing.Image.FromFile(file))
{
byte[] buffer = new byte[1];
if (CheckBox1.Checked == false)
{
img.Save(ms, myImageCodecInfo, myEncoderParameters);
buffer = ms.GetBuffer();
}
else if (CheckBox1.Checked == true)
{
FileInfo MyFileInfo = new FileInfo(file);
float MyFileSize = (float)MyFileInfo.Length / 1024;
if (MyFileSize <= 650)
{
buffer = File.ReadAllBytes(file);
}
else if (MyFileSize > 650 && MyFileSize < 900)
{
int param = Convert.ToInt32(75 + 600 / MyFileSize * 22);
buffer = getThumImage(file, param).ToArray();
}
else if (MyFileSize > 900 && MyFileSize < 1100)
{
int param = Convert.ToInt32(75 + 600 / MyFileSize * 20);
buffer = getThumImage(file, param).ToArray();
}
else if (1100 < MyFileSize && MyFileSize < 1200)
{
buffer = File.ReadAllBytes(file);
}
else if (1200 < MyFileSize && MyFileSize < 1400)
{
int param = Convert.ToInt32(70 + 600 / MyFileSize * 20);
buffer = getThumImage(file, param).ToArray();
}
else if (MyFileSize > 1400 && MyFileSize < 1900)
{
int param = Convert.ToInt32(1900 / MyFileSize * 15);
buffer = getThumImage(file, param).ToArray();
}
else if (MyFileSize > 1900)
{
int param = Convert.ToInt32(10 + 1900 / MyFileSize * 10);
buffer = getThumImage(file, param).ToArray();
}
}
long byteLength = buffer.Length;
long leftByterLength = byteLength;
int startIndex = 0;
int wirteByteLength = 0;
while (leftByterLength > 0)
{
wirteByteLength = leftByterLength >= 4096 ? 4096 : (int)leftByterLength;
s.Write(buffer, startIndex, wirteByteLength);
leftByterLength = leftByterLength - wirteByteLength;
startIndex = startIndex + wirteByteLength;
}
}
#region
//using (System.Drawing.Image img = System.Drawing.Image.FromFile(file))
//{
// FileInfo MyFileInfo = new FileInfo(file);
// float MyFileSize = (float)MyFileInfo.Length / 1024;
// if (MyFileSize <= 650)
// {
// img.Save(ms, ImageFormat.Jpeg);
// }
// else if (MyFileSize > 650)
// {
// img.Save(ms, ImageFormat.Jpeg);
// }
// //img.Save(ms, myImageCodecInfo, myEncoderParameters);
// byte[] buffer = ms.GetBuffer();
// long byteLength = buffer.Length;
// long leftByterLength = byteLength;
// int startIndex = 0;
// int wirteByteLength = 0;
// while (leftByterLength > 0)
// {
// wirteByteLength = leftByterLength >= 4096 ? 4096 : (int)leftByterLength;
// s.Write(buffer, startIndex, wirteByteLength);
// leftByterLength = leftByterLength - wirteByteLength;
// startIndex = startIndex + wirteByteLength;
// }
//}
#endregion
}
WNetConnectionHelper.WNetCancelConnection(userName, 1, true);
}
s.Finish();
s.Close();
}
}
catch (Exception EX)
{
}
}
