How can I delete images from application.startuppath folder (like: project\bin\debug\image) using C# error: the process cannot access the file 'filename' because it is being used by another process.

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<pre>DialogResult result1 = MessageBox.Show("Are you sure to Remove?", "Important Question", MessageBoxButtons.YesNo);
                        if (result1 == DialogResult.Yes)
                        {

                            while (listBox1.SelectedItems.Count > 0)
                            {
                                string FileName = "";
                                FileName = listBox1.SelectedItems[0].ToString();
                                listBox1.Items.Remove(listBox1.SelectedItems[0]);
                                string path = Application.StartupPath + @"\Image\" + FileName;
                                //string path = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetEntryAssembly().Location) + @"\Image\" + FileName;
                                //string path = Path.GetDirectoryName(Application.ExecutablePath) + @"\Image\" + FileName;
                             
                                //using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate))
                                //using (StreamWriter str = new StreamWriter(fs))
                                //{

                                if (File.Exists(path))
                                {
                                    File.Delete(path);
                                }
                                //    str.Close();
                                //    fs.Close();
                                //}
                                pictureBox1.Image = null;
                                pictureBox2.Image = null;
                                textBox1.Text = "";
                                MessageBox.Show("File Successfully Removed.");
                            }
                        }
                        else
                        {
                            return;

                        }

What I have tried:

i'm trying to delete a selected image(selected from listbox) from Application folder. so i'm getting error: The process cannot access the file 'filename' because it is being used by another process. please help if anybody knows how do i open and close connection for access I/O operation files.

Posted 16-Sep-16 3:54am

Muhammad Rehbar Sheikh

Updated 16-Sep-16 5:28am

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3 solutions

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Wessel Beulink · Answer 1 · 2016-09-16T04:01:00

if (result1 == DialogResult.Yes)
                        {
 
                            if (listBox1.SelectedItems.Count > 0)
                            {
                                string FileName = "";
                                FileName = listBox1.SelectedItems[0].ToString();
                                listBox1.Items.Remove(listBox1.SelectedItems[0]);
                                string path = Application.StartupPath @"\Image\" + FileName;
                                //string path = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetEntryAssembly().Location) + @"\Image\" + FileName;
                                //string path = Path.GetDirectoryName(Application.ExecutablePath) + @"\Image\" + FileName;
                             
                                //using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate))
                                //using (StreamWriter str = new StreamWriter(fs))
                                //{

                                if (File.Exists(path))
                                {
                                    File.Delete(path);
                                }
                                //    str.Close();
                                //    fs.Close();
                                //}
                                pictureBox1.Image = null;
                                pictureBox2.Image = null;
                                textBox1.Text = "";
                                MessageBox.Show("File Successfully Removed.");
                            }
                        }

change the while for an if. You are trying to delete it multiple times now.
Also the else is not necesarry you can delete it.

Patrice T · Answer 2 · 2016-09-16T04:04:00

Solution 2

Quote:
error: The process cannot access the file 'filename' because it is being used by another process.

Pretty explicit! Which word you don't understand in the error message ?

The answer is in the error message: you can't delete a file that is in use by your process or another. And it will not change until the other process stop using that file.

Posted 16-Sep-16 4:04am

Patrice T

Comments

Muhammad Rehbar Sheikh 17-Sep-16 3:57am

i'm unable to find out which process is actually being used this file. my overall way is that >>Browse image file>>Add it to listbox>>Remove selected image from listbox and (from its actual application startuppath bin>debug>image folder)

but when i run my project, & trying to delete this file. the first time was deleted. but second time i'm getting same error. so what should i do know.

Richard Deeming · Answer 3 · 2016-09-16T05:28:00

Solution 3

The most likely explanation is that you've used Image.FromFile to load the image, or passed the file path to a PictureBox control. This locks the file until your application exits.

Image file is locked when you set the PictureBox Image property to a file[^]

The solution is to use Image.FromStream instead. This only locks the file whilst the stream is open.

C#

using (var stream = File.OpenRead(PathToYourImageFile))
{
    yourPictureBox.Image = Image.FromStream(stream);
}

Posted 16-Sep-16 5:28am

Richard Deeming

Comments

Muhammad Rehbar Sheikh 17-Sep-16 4:04am

thanks! i've used your code for load image into picturebox. but still got same error while deleting. actually when i run my project, & trying to delete this file. the first time was deleted. but second time i'm getting same error. my overall way is that >>Browse image file>>Add it to listbox>>Remove selected image from listbox and (from its actual application startuppath bin>debug>image folder).

i'm unable to find out which process is actually being used this file. so what should i do know.