Question

I am using OpenFileDialog class to browse a file in window application using c#. It is giving the security exception as below.

Request for the permission of type
‘System.Security.Permissions.FileIOPermission,
mscorlib, Version=2.0.0.0,
Culture=neutral,
PublicKeyToken=b77a5c561934e089’
failed.

My code is

        OpenFileDialog fdlg = new OpenFileDialog();
        fdlg.Title = "C# Corner Open File Dialog";
        fdlg.InitialDirectory = @"c:\";
        fdlg.Filter = "All files (*.*)|*.*|All files (*.*)|*.*";
        fdlg.FilterIndex = 2;
        fdlg.RestoreDirectory = true;
        if (fdlg.ShowDialog() == DialogResult.OK)
        {
            txtpath.Text = fdlg.FileName;
        }

I am not getting the problem.
please help.

Answer 1

Security Note
To get or set the FileName property, your assembly requires a privilege level granted by the System.Security.Permissions.FileIOPermission class. If you are running in a partial-trust context, the process might throw an exception due to insufficient privileges. For more information, see Code Access Security Basics.