为上传的图片创建缩略图
本文关键字:创建 略图 | 更新日期: 2023-09-27 18:16:36
我有一个asp.net mvc应用程序,我可以一次上传多个图像,这很好,但我有一个问题,创建缩略图图像的原件。
代码如下:
[HttpPost]
public ActionResult SaveUploadedFile()
{
bool isSavedSuccessfully = true;
string fName = "";
try
{
foreach (string fileName in Request.Files)
{
HttpPostedFileBase file = Request.Files[fileName];
fName = file.FileName;
if (file != null && file.ContentLength > 0)
{
var originalDirectory = new DirectoryInfo(string.Format("{0}Images", Server.MapPath(@"'")));
string pathString = Path.Combine(originalDirectory.ToString(), "Gallery");
string pathString2 = Path.Combine(originalDirectory.ToString(), "Gallery''Thumbs");
//var fileName1 = Path.GetFileName(file.FileName);
bool exists = Directory.Exists(pathString);
bool exists2 = Directory.Exists(pathString2);
if (!exists)
Directory.CreateDirectory(pathString);
if (!exists2)
Directory.CreateDirectory(pathString2);
var path = string.Format("{0}''{1}", pathString, file.FileName);
file.SaveAs(path);
//WebImage img = new WebImage(file.InputStream);
WebImage img = new WebImage(fileName);
//if (img.Width > 1000)
img.Resize(100, 100);
img.Save(pathString2);
}
}
}
catch (Exception ex)
{
isSavedSuccessfully = false;
}
if (isSavedSuccessfully)
{
return Json(new { Message = fName });
}
else
{
return Json(new { Message = "Error in saving file" });
}
}
所以基本上file.SaveAs(path);
是最后一行工作,我实际上保存了图像,但在那行之后,我尝试创建并保存拇指,但它不起作用(我之前创建了Thumbs
文件夹)。
我也得到了Error in saving file
响应,但那是因为我试图创建和保存拇指,如果我删除,然后我不得到它,我不知道如何返回实际的错误,实际看看错误是什么。
答案是:
var path2 = string.Format("{0}''{1}", pathString2, file.FileName)
WebImage img = new WebImage(file.InputStream);
img.Resize(250, 250);
img.Save(path2);