を使用してイメージを削除しようとするとSystem.IO.File.Delete(....)
、エラー例外が発生します。
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.
誰でも私に提案をお願いできますか?
C#で画像をトリミング、サイズ変更、削除する私の主な機能。
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);
}
}
トリミング機能については、
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;
}
}
リサイズ機能については、
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;
}
}
[更新しました]
最後に、@landenedgeが提案したように問題を修正します。
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");
}
}