如何打开在IIS上发布的应用程序的列表框中列出的文件（excel，txt，单词）？

Question

I've developed an WebForms app in which I have files from a folder listed in a ListBox. Running in VS2019 works fine, I double click the name of the file in the listBox and it opens but when I publish it to IIS on a Windows Server 2012, It just opens the procces on the backgroud but the file never opens.

I changed the account which the app runs to LocalSystem, Power Domain Users and nothing happens. Also I gave username and password to Process.start.

 var folder1 = @"\\BOXI\Ejecutables\CRM2\" + NumCaso_txt.Text;

                foreach (char c in "PASSWORD")
                    pwd.AppendChar(c);
                if (Directory.Exists(folder1))
                {
                    DirectoryInfo Dir = new DirectoryInfo(folder1);
                    FileInfo[] FileList = Dir.GetFiles("*.*", SearchOption.AllDirectories);
                    foreach (FileInfo FI in FileList)
                    {
                        //filesLbox.Items.Add(FI.Name + " " + FI.CreationTime);
                        if (filesLbox.SelectedIndex == i)
                        {

                            ProcessStartInfo procStart =
    new ProcessStartInfo("notepad.exe", FI.FullName);
                            procStart.UserName= "USER";
                            procStart.Domain= "DOMAIN";
                            procStart.Password = pwd;
                            procStart.UseShellExecute = false;
                            Process.Start(procStart);
                            //command.StartInfo.FileName = FI.FullName;
                            ////Process.Start(FI.FullName);
                            //command.Start();
                            break;
                        }
                        i++;
                    }
                }

Answer 1

If you want to open file on client computer, you need to apply some javascript which could comunicate with OS through browser.

If you want to open file on server computer, your web app must be running on user which has active GUI session. To do this, login to your server using your credentials, change application pool identity to logged in user, restart IIS and the process should open with GUI as you expected. If that doesn't work you can also try enabling "Allow service interact with desktop" option in IIS service configuration.