Why getting exception The process cannot access the file image0.gif' because it is being used by another process even if I dispose it first ?

Question

private void GenerateAnimatedGifs()
        {
            UnFreezWrapper unfreezWrapper = new UnFreezWrapper();

            checkBoxGetImages = false;
            checkBoxGetAllImages.Checked = false;
            GetImagesFiles();

            for (int i = 0; i < filesSatellite.Length; i++)
            {
                Image img = Image.FromFile(filesSatellite[i]);
                img.Save(filesSatellite[i] + "ConvertedToGif.gif", System.Drawing.Imaging.ImageFormat.Gif);
                img.Dispose();

                File.Delete(filesSatellite[i]);
            }

            GetImagesFiles();

            unfreezWrapper.MakeGIF(filesRadar.ToList(), @"d:\Downloaded Images\Animates Gifs\radanim.gif", 100, true);
            unfreezWrapper.MakeGIF(filesSatellite.ToList(), @"d:\Downloaded Images\Animates Gifs\satanim.gif", 100, true);
        }

In the loop I convert each image to gif save it in other name and then dispose the original image and then trying to delete the original image so only the ConvertedToGif images will left.

but I'm getting the exception is being used by another process on the delete line

File.Delete(filesSatellite[i]);

but isn't the file disposed already ?

Answer 1

See if this might work for you

ImageHelpers.LoadBitmap("Your file name goes here")


public static class ImageHelpers
{
    /// <summary>
    /// Load a clone of an image
    /// </summary>
    /// <param name="fileName">Image file to load</param>
    /// <returns><see cref="Bitmap"/></returns>
    public static Bitmap LoadBitmap(string fileName)
    {
        Bitmap imageClone = null;
        var imageOriginal = Image.FromFile(fileName);

        imageClone = new Bitmap(imageOriginal.Width, imageOriginal.Height);

        Graphics gr = Graphics.FromImage(imageClone);
        gr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.None;
        gr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
        gr.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighSpeed;
        gr.DrawImage(imageOriginal, 0, 0, imageOriginal.Width, imageOriginal.Height);
        gr.Dispose();
        imageOriginal.Dispose();

        return imageClone;
    }       
}