public void MakeThumbnail(string path, int s_width, int s_height, string saveFilePath)
{
if (string.IsNullOrEmpty(saveFilePath) || string.IsNullOrEmpty(path))
{
return;
}
Image img = Image.FromFile(path);
Image thumb = MakeThumbnail(img, s_width, s_height);
img.Dispose();
var savePath = Path.GetDirectoryName(saveFilePath);
var saveFile = Path.GetFileName(saveFilePath);
ImageFileManager.SaveTo(thumb, savePath, saveFile);
thumb.Dispose();
}
public List <string> UploadImage(List <HttpPostedFileBase> stream, int s_width, int s_height, string saveFilePath, bool isBuildThunb)
{
var savePath = HttpContext.Current.Server.MapPath(saveFilePath); //saveFilePath;
List <string> paths = new List <string>();
if (!string.IsNullOrEmpty(saveFilePath))
{
string fileNewName = string.Empty;
string fileExt = string.Empty;
string fileNameDate = string.Empty;
foreach (var item in stream)
{
fileNameDate = DateTime.Now.ToString("yyyyMMddHHmmssffffff");
Image imgBase = null;
Image img = Image.FromStream(item.InputStream);
if (img.Width > 1920)
{
int imgBaseHeight = Convert.ToInt32(((1920 * 1.0) / img.Width) * img.Height); //原图 宽度1000
imgBase = MakeThumbnail(img, img.Width, imgBaseHeight);
}
else
{
imgBase = img;
}
fileExt = Path.GetExtension(item.FileName).ToLower();
fileNewName = fileNameDate + fileExt;
ImageFileManager.SaveTo(imgBase, savePath, fileNewName);
paths.Add(saveFilePath + fileNewName);
if (isBuildThunb)
{
int imgThunbHeight = Convert.ToInt32(((s_width * 1.0) / img.Width) * img.Height); //缩略图
Image thumb = MakeThumbnail(imgBase, s_width, imgThunbHeight);
fileNewName = fileNameDate + fileExt + s_width.ToString() + "x" + fileExt;
ImageFileManager.SaveTo(thumb, savePath, fileNewName);
thumb.Dispose();
}
imgBase.Dispose();
img.Dispose();
}
}
return(paths);
}
/// <summary>
/// 返回 保存的缩略文件名 原名!<s_width>x<s_height>
/// </summary>
/// <param name="path"></param>
/// <param name="s_width"></param>
/// <param name="s_height"></param>
/// <returns></returns>
public string MakeThumbnail(string path, int s_width, int s_height)
{
if (string.IsNullOrEmpty(path))
{
return(string.Empty);
}
Image img = Image.FromFile(path);
Image thumb = MakeThumbnail(img, s_width, s_height);
int width = thumb.Width;
int height = thumb.Height;
var savePath = Path.GetDirectoryName(path);
var saveFile = Path.GetFileNameWithoutExtension(path) + "tmp" + Path.GetExtension(path);
ImageFileManager.SaveTo(thumb, savePath, saveFile);
img.Dispose();
thumb.Dispose();
var filePath = path + "!" + width.ToString() + "x" + height.ToString(); //DateTime.Now.ToString("yyyyMMddHHmmssffffff") + new Random(DateTime.Now.Millisecond).ToString() + "!" + width.ToString() + "x" + height.ToString();
File.Move(Path.Combine(savePath, saveFile), filePath);
return(filePath);
}