Not able delete file from folder

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hi, I am trying to delete a file from folder using c#

I am reading an excel chart from the excel and the converting chart into the image and saved in local folder for other use , once I use the image now I want to delete that image by providing the path but I am getting error like "

System.IO.IOException: 'The process cannot access the file 'D:\chart\86e740b9-83bc-470e-9e03-efa9864b1d8e.jpg' because it is being used by another process.'

"

What I have tried:

{

Workbook wb = new Workbook("D:\\chart\\Qchart.xlsx");

            // Access the first worksheet
            Worksheet worksheet = wb.Worksheets[0];
            StringBuilder Reportbuilder = new StringBuilder();
            Reportbuilder.Append("<html>");
            Reportbuilder.Append("<header>");
            Reportbuilder.Append("</header>");
            Reportbuilder.Append("<body>");
            Reportbuilder.Append("<table style='width:100%;' >");
            foreach (var sec in SectionList)
            {
                Guid secGuid;

                secGuid = Guid.NewGuid();

                worksheet.Cells["D6"].PutValue(sec.PerformanceScore);
                // Set the print area with your desired range
                worksheet.PageSetup.PrintArea = "AH4:BG25";

                // Set all margins as 0
                worksheet.PageSetup.LeftMargin = 0;
                worksheet.PageSetup.RightMargin = 0;
                worksheet.PageSetup.TopMargin = 0;
                worksheet.PageSetup.BottomMargin = 0;

                // Set OnePagePerSheet option as true
                ImageOrPrintOptions options = new ImageOrPrintOptions();
                options.OnePagePerSheet = true;
                //options. = ImageFormat.Jpeg;
                options.HorizontalResolution = 200;
                options.VerticalResolution = 200;

                // Take the image of your worksheet
                SheetRender sr = new SheetRender(worksheet, options);
                sr.ToImage(0, "D:\\chart\\"+secGuid+".jpg");
                byte[] Imge = convertImageTobytes("D:\\chart\\" + secGuid + ".jpg");
               
                Reportbuilder.Append("<tr>'"+sec.SectionName+"'");
                Reportbuilder.Append("</tr>");
                Reportbuilder.Append("<tr><img   src='data:image/png;base64," + @System.Convert.ToBase64String(Imge) + "'/> </tr>");
                DeleteImage("D:\\chart\\" + secGuid + ".jpg");
                foreach (var question in sec.ListQuestions)
                {

                }
            }

            Reportbuilder.Append("</body>");
            Reportbuilder.Append("</table>");





            return char111t;
        }

        public byte[] convertImageTobytes(string path)
        {
            System.Drawing.Image img = System.Drawing.Image.FromFile(path);
            byte[] bytes;
            using (MemoryStream ms = new MemoryStream())
            {
                img.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
                bytes = ms.ToArray();
                ms.Dispose();
                ms.Close();
            }
            return bytes;
        }

        public void DeleteImage(string path)
        {
            if ((System.IO.File.Exists(path)))
            {
                System.IO.File.Delete(path);
            }
        }

C#

Posted 6-May-20 19:14pm

murkalkiran

Updated 6-May-20 20:27pm

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2 solutions

Solution 1

Which word you don't understand in

System.IO.IOException: 'The process cannot access the file 'D:\chart\86e740b9-83bc-470e-9e03-efa9864b1d8e.jpg' because it is being used by another process.'

By design, the OS forbid you from deleting a file in use.
Solution, wait until the file is not in use anymore.

Posted 6-May-20 19:21pm

Patrice T

Comments

murkalkiran 7-May-20 1:42am

I can delete the image file manually before this line byte[] Imge = convertImageTobytes("D:\\chart\\" + secGuid + ".jpg"); execute
but after converting yo byte array I am not able to delete manually also, I try to delete manually it's showing "The action can't be completed because the file is open in .Net Core Host"

Patrice T 7-May-20 1:54am

Use Improve question to update your question.
So that everyone can pay attention to this information.

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User 11060979 · Accepted Answer · 2020-05-06T20:27:00

Solution 2

For System.Drawing.Image.FromFile see here Image.FromFile Method (System.Drawing) | Microsoft Docs[^]in the remarks:

The file remains locked until the Image is disposed.

Posted 6-May-20 20:27pm

User 11060979

Comments

murkalkiran 7-May-20 2:56am

Thanks it worked after doing img.Dispose(); in convertImageTobytes function

manosabari 7-May-20 8:31am

thanks