How to speed up Word Interop processing?

Question

I am Very new at C# and have written a fairly clunky code. I have been doing a lot of courses online and a lot say that there are several ways to approach problems. Now i have m

Answer 1

Ok Completed it so we now process all information as before and import the whole document still. Total runtime is 02:09.8 for 2780 sentences and approx 44,000 words (that includes spaces!) Below is my (Not perfect Code) not bad considering I picked up C# 2 weeks ago ;) Hope this helps someone out in the future.

    public Form1()
    {
        InitializeComponent();
    }
    public int id = 0;
    public int[] iD = new int[400];
    public string[] timeOn = new string[400];
    public string[] timeOff = new string[400];
    public string[] dutyNo = new string[400];
    public string[] day = new string[400];
    public string[] hours = new string[400];

    //Create File Location Var
    public string fileLocation = null;

    // On Click of Add Dutys
    private void button1_Click(object sender, EventArgs e)
    {
        //Sets Progress Bar visible and prepares to increment
        pBar1.Visible = true;
        pBar1.Minimum = 1;
        pBar1.Value = 1;
        pBar1.Step = 1;


        //Stopwatch test Declared
        Stopwatch stopWatch = new Stopwatch();

        try {
            //Self Test to see if a File Location has been set for Duty document.
            if (fileLocation == null) {
                //If not set prompts user with message box and brings up file explorer
                MessageBox.Show("It Appears that a file location has not yet been set, Please Select one now.");
                Stream myStream = null;
                OpenFileDialog openFileDialog1 = new OpenFileDialog();
                //Sets default Location and Default File type as .doc
                openFileDialog1.InitialDirectory = "c:\\";
                openFileDialog1.Filter = "All files (*.*)|*.*|Word Files (*.doc)|*.doc";
                openFileDialog1.FilterIndex = 2;
                openFileDialog1.RestoreDirectory = true;
                //Waits for User to Click ok in File explorer and then Sets file location to var
                if (openFileDialog1.ShowDialog() == DialogResult.OK)
                {
                    try
                    {
                        //Checks to make sure a file location is set
                        if ((myStream = openFileDialog1.OpenFile()) != null)
                        {
                            using (myStream)
                            {
                                //This is where we set location to var
                                fileLocation = openFileDialog1.FileName;
                            }
                            //Prompts user to click a file before OK
                        }else { MessageBox.Show("Please Select a file location before clicking ok"); }
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show("Error: Could not read file from disk: " + ex.Message);
                    }
                }
            }

           //Loads New Duty file 
            Microsoft.Office.Interop.Word.Application application = new Microsoft.Office.Interop.Word.Application();
            Microsoft.Office.Interop.Word.Document document = application.Documents.Open(fileLocation);
            //Begin stop watch (COPY TIME)
            stopWatch.Start();

            //Sets Count to No of sentences and then prepares Array using Number of sentences 
            //**This process reduces amount of processng time by taking everything in to the program to start and then dealing with it.
            int count = document.Sentences.Count;
            string[] sents = new string[count];
            //Then sets the Progress bar to the Number of sentences that will be Copied to our array
            pBar1.Maximum = count;

            try {
                //For loop runs throug every sentence and adds it to the array.
                for (int i = 0; i < count; i++) {
                    sents[i] = document.Sentences[i+1].Text;
                    //increment Progress bar by 1 for every sentence(Parse made)
                    pBar1.PerformStep();
                }
                //Closes our instance of word
                application.Quit();
                try {

                    for (int i = 0; i < count; i++)
                    {
                        //Sets our Split criteria 
                        char[] delimiterChars = { ' ','\t' };
                        string[] test = (sents[i].Split(delimiterChars));
                        //we then enter For loop that runs for the number of ords found/Split
                        for (int a = 0; a < test.Length; a++)
                        {  
                            //If tests only begin if the word is NOT a space blank, tab , - As these do parse through into our Test arrays
                            if (!(test[a] == "" || test[a].Contains("/t")|| test[a].Contains("-") || test[a].Contains(" ")))
                            {
                                //If tests to find Duty numbers ours on off and assigns ID number for easy indexing. 
                                //##THIS DOES ASSUME THAT OUR TIMES ARE 1 SPACE AFTER THEIR IDENTIFIERS.
                                if (test[a] == "TG")
                                {
                                    dutyNo[id] = test[a + 2]; 
                                }
                                else if (test[a] == "On")
                                {
                                    iD[id] = id;
                                    timeOn[id] = test[a + 1];
                                }
                                else if (test[a] == "Off")
                                {
                                    timeOff[id] = test[a + 1];
                                }
                                else if (test[a] == "Hrs")
                                {
                                    hours[id] = test[a + 1];
                                }
                                else if (test[a] == "Days")
                                {
                                    day[id] = test[a + 1];
                                    //PRINTS TO USER VIA LIST BOX ALL THE DUTYS ADDED.
                                    listBox1.Items.Add(string.Format("ADDED:Duty No:{3} Time on:{1} Time off:{2} Hours{5} Day:{4} ID:{0}", iD[id], timeOn[id], timeOff[id], dutyNo[id], day[id], hours[id]));
                                    id++;
                                }

                            }
                        }
                    }
                }
                catch(Exception ex) { MessageBox.Show("Error in split:" + ex.Message); }
            }
            catch(Exception ex) { MessageBox.Show("error setting string to Document:" + ex.Message); }
            //Stopwatch Is then printed for testing purposes.
            TimeSpan ts = stopWatch.Elapsed;
            string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}", ts.Hours, ts.Minutes, ts.Seconds,
            ts.Milliseconds / 10);
            Console.WriteLine("RunTime (total):" + elapsedTime);

            stopWatch.Reset();

        }
        catch(Exception ex) { MessageBox.Show("Error in reading/finding file: "+ ex.Message); }

    }


}

}

I use all this code with a fairly large List box (ListBox1) a Button (Button1)and a Non visible on start-up Progress bar (pBar1).