當我嘗試使用System.IO.File.Delete(....)
刪除圖像時,我得到錯誤異常。C#圖像裁剪大小刪除
IOException was unhandled by user code
The process cannot access the file 'xxx\image\6132_15658422-b0a1-45a9-b0f9-7e9af783ad53_Temp.jpg' because it is being used by another process.
任何人都可以請給我建議?
我的主要功能裁剪,調整大小和C#中刪除圖像。
int X1 = 70, Y1 = 20, X2 = 201, Y2 = 236, w = 800, h = 600;
string filelocation = "image/6132_15658422-b0a1-45a9-b0f9-7e9af783ad53_Temp.jpg";
protected void Page_Load(object sender, EventArgs e)
{
try
{
using (System.Drawing.Image _Image = cropImage(
ResizeImage(
System.Drawing.Image.FromFile(Server.MapPath("~") +"/"+ filelocation), w, h),
(new System.Drawing.Rectangle(X1, Y1, X2, Y2))))
{
_Image.Save(Server.MapPath("~") + "/" + "image/output.jpg");
}
}
catch (Exception ex)
{
throw ex;
}
finally {
File.Delete(Server.MapPath("~") + "/" + filelocation);
}
}
對於裁切圖像功能,
public System.Drawing.Image cropImage(System.Drawing.Image image, Rectangle cropArea)
{
try
{
Bitmap bmpImage = new Bitmap(image);
Bitmap bmpCrop = bmpImage.Clone(cropArea,
bmpImage.PixelFormat);
return (System.Drawing.Image)(bmpCrop);
}
catch (Exception ex)
{
throw ex;
}
}
對於調整圖像大小功能,
public System.Drawing.Image ResizeImage(System.Drawing.Image image, int maxWidth, int maxHeight)
{
try
{
var ratioX = (double)maxWidth/image.Width;
var ratioY = (double)maxHeight/image.Height;
var ratio = Math.Min(ratioX, ratioY);
var newWidth = (int)(image.Width * ratio);
var newHeight = (int)(image.Height * ratio);
var newImage = new Bitmap(newWidth, newHeight);
Graphics.FromImage(newImage).DrawImage(image, 0, 0, newWidth, newHeight);
return newImage;
}
catch (Exception ex)
{
throw ex;
}
}
[更新]
最後我改正我的問題,因爲@landenedge建議,
using (var mainImage = System.Drawing.Image.FromFile(Server.MapPath("~") +"/"+ filelocation)){
using (System.Drawing.Image _Image = cropImage(
ResizeImage(mainImage, w, h),
(new System.Drawing.Rectangle(X1, Y1, X2, Y2))))
{
_Image.Save(Server.MapPath("~") + "/" + "image/output.jpg");
}
}
提示:「它正在被另一個進程使用」... –
是的,但我不知道哪個進程已被使用... –
可能是您自己的:運行ProcessMonitor ...它是免費的 –