Question

I have to build a software which can search and display PDF files from a folder on the local network.
My supervisor was requesting to have a database and store the path of PDF files there(not to the PDF itself because of the large amount), so I can search and open them from the software.

I would greatly appreciate if you could give me some ideas for solving it.

Answer 1

    private string[,] GetImagesFromServerFolder()
    {
        IntPtr token;
        if (
            !NativeMethods.LogonUser([Server_Login_Name], [Server_Location],
                                     [Server_Login_Password], NativeMethods.LogonType.NewCredentials,
                                     NativeMethods.LogonProvider.Default, out token))
        {
            throw new Win32Exception();
        }

        try
        {
            IntPtr tokenDuplicate;

            if (!NativeMethods.DuplicateToken(
                token,
                NativeMethods.SecurityImpersonationLevel.Impersonation,
                out tokenDuplicate))
            {
                throw new Win32Exception();
            }

            try
            {
                using (WindowsImpersonationContext impersonationContext =
                    new WindowsIdentity(tokenDuplicate).Impersonate())
                {
                    /******************* CODE FROM HERE *******************/

                    List<string> files = new List<string>(Directory.GetFiles(_PHYSICAL SERVER LOCATION_));


                    return files;

                    /******************* CODE TO HERE *******************/
                }
            }
            finally
            {
                if (tokenDuplicate != IntPtr.Zero)
                {
                    if (!NativeMethods.CloseHandle(tokenDuplicate))
                    {
                        // Uncomment if you need to know this case.
                        ////throw new Win32Exception();
                    }
                }
            }
        }
        finally
        {
            if (token != IntPtr.Zero)
            {
                if (!NativeMethods.CloseHandle(token))
                {
                    // Uncomment if you need to know this case.
                    ////throw new Win32Exception();
                }
            }
        }
    }  

This will then return a list of all the .pdf files and locations
You can then sore that in a DB.

Then, run through all the files in the list (In your main running method);

List<string> file = GetImagesFromServerFolder();  
foreach (var s in file)  
{  
        const string connStr = "INSERT INTO tblPdfLocations (location) VALUES (@location)";
        //Store the connection details as a string
    string connstr =
        String.Format(@"SERVER=[LOCATION]; UID=[USERNAME]; pwd=[PASSWORD]; Database=[DATABASE]");

    //Initialise the connection to the server using the connection string.
    _sqlConn = new SqlConnection(connstr);

        var sqlComm = new SqlCommand(connStr, _sqlConn) {CommandType = CommandType.Text};
        sqlComm.Parameters.Add(new SqlParameter("@location", SqlDbType.VarChar, 50)).Value = s;

        sqlComm.ExecuteNonQuery();
        _sqlConn.Close();
}