C# 上传图像、重命名图像、制作缩略图并替换原始图像。(优化)
我已经创建了我在问题中描述的这些函数。然而,我认为我这样做的方式并不是最好的方式C# 上传图像、重命名图像、制作缩略图并替换原始图像。(优化),c#,asp.net-mvc,file-io,file-upload,C#,Asp.net Mvc,File Io,File Upload,我已经创建了我在问题中描述的这些函数。然而,我认为我这样做的方式并不是最好的方式 [HttpPost] public ActionResult Create(FormCollection collection, string schooljaarparam, FlatONASAanbieder foa) { if (ModelState.IsValid) { // var r = new List<ViewData
[HttpPost]
public ActionResult Create(FormCollection collection, string schooljaarparam, FlatONASAanbieder foa) {
if (ModelState.IsValid) {
// var r = new List<ViewDataUploadFilesResult>();
foreach (string file in Request.Files) {
HttpPostedFileBase hpf = Request.Files[file] as HttpPostedFileBase;
if (hpf.ContentLength == 0)
continue;
//extensie nakijken. jpg, png, jpeg, of GIF.
if (MvcApplication.isImage(hpf.FileName)) {
//Image img = new Image();
string savedFileName = Path.Combine(
AppDomain.CurrentDomain.BaseDirectory + "uploads\\ONAS\\",
Path.GetFileName(hpf.FileName));
FileInfo fi = new FileInfo(savedFileName);
int i = 1;
while (fi.Exists) {
fi = new FileInfo(savedFileName.Substring(0, savedFileName.Length - Path.GetFileName(savedFileName).Length) + Path.GetFileNameWithoutExtension(savedFileName) + " (" + i++ + ") " + Path.GetExtension(savedFileName));
}
savedFileName = fi.DirectoryName + "\\" + fi.Name;
hpf.SaveAs(savedFileName);
using (Image Img = Image.FromFile(savedFileName)) {
//Size ThumbNailSize = NewImageSize(Img.Height, Img.Width, 79);
Size NewSize = VerkleinMaxHoogte(Img.Size, 79);
using (Image ImgThnail = new Bitmap(Img, NewSize.Width, NewSize.Height)) {
//string ss = savedFileName.Substring(0, savedFileName.Length - Path.GetFileName(savedFileName).Length) + Path.GetFileNameWithoutExtension(savedFileName) + "-thumb" + Path.GetExtension(savedFileName);
ImgThnail.Save(savedFileName + ".tmp", Img.RawFormat);
ImgThnail.Dispose();
}
Img.Dispose();
}
System.IO.File.Delete(savedFileName);
FileInfo f = new FileInfo(savedFileName + ".tmp");
f.MoveTo(savedFileName);
} else {
ModelState.AddModelError("ONAS_Logo", "Het geuploadde bestand is geen afbeelding. ");
}
//r.Add(new ViewDataUploadFilesResult() {
// Name = savedFileName,
// Length = hpf.ContentLength
//});
}
}
// return View("UploadedFiles", r);
return View();
}
[NonAction]
public Size VerkleinMaxHoogte(Size orig, double height) {
double tempval = height / orig.Height;
return new Size(Convert.ToInt32(tempval * orig.Width), Convert.ToInt32(height));
}
所以我的做法是:
如何更快地完成此操作?您可以始终使用和方法将#4和#5组合起来。这也将消除#8和#9。好的观点。我在找这样的东西,但没找到:)
public static bool isImage(string s) {
if (s.EndsWith(".jpg", true, null) || s.EndsWith(".jpeg", true, null) || s.EndsWith(".gif", true, null) || s.EndsWith(".png", true, null)) {
return true;
}
return false;
}