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/// /// 修改指定图片的分辨率 ///
/// 文件夹url
/// 文件名
/// 文件路径，带文件名
/// 分辨率的宽
/// 分辨率的高
public void update_picture(string fileFoldUrl, string fileName, string filePath, int _width, int _height)
{
byte[] zp = this.load_pictMemory(filePath);
MemoryStream ms = new MemoryStream(zp);
System.Drawing.Image img = System.Drawing.Image.FromStream(ms);
Bitmap btp = new Bitmap(img, _width, _height);
DirectoryInfo dti = new DirectoryInfo(fileFoldUrl);
FileInfo[] fis = dti.GetFiles();
string fileUrl = fileFoldUrl + fileName;
btp.Save(fileUrl);
}
/// /// 获取指定文件流的字节大小 ///
/// 文件路径
/// byte[]
public byte[] load_pictMemory(string filePath)
{
byte[] pictData = null;
FileInfo fi = new FileInfo (filePath);
if (fi.Exists)
{
pictData = new byte[fi.Length];
FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.ReadWrite);
BinaryReader br = new BinaryReader(fs);
br.Read(pictData, 0, Convert.ToInt32(fi.Length));
fs.Dispose();
}
else
{
HttpContext.Current.Response.Write("");
}
return pictData;
}
