Stuck on a simple program!!!

Question

Hello everyone!
I've recently started C# programming, and we have been given an assignment to complete for 2 weeks time - it's like a trivia game, using different question types. I've started doing it, but even though the code looks correct, I have some major problems,
and I just don't know what's wrong. The said problems are:
1)The Stream Reader does not read my username or score, and these do not appear in the text file
2)The Current Score and High Scores do not appear in the textboxes, they're supposed to
3)I programmed the score to appear next to a label, when the Submit button is clicked, but when I do so, the label is replaced by the score, and I wanted it to appear next to it.
4)When I try to drag and drop three images, they won't budge and show a "forbidden" sign
5)My question buttons in the Main Form aren't becoming Read-Only, even though I 
Here's the code for the Main Form (my main menu)
namespace GermanQuiz
    public partial class frmMain : Form
        //This creates a thread which executes the SplashStart method, which then opens the SplashScreen form.
        //The form will then run for 5 seconds to let the progress bar load - after 5 seconds the Splash Screen will close
        //then the Main Form will open. The thread is then terminated and afterwards closed.
        public frmMain()
            Thread t = new Thread(new ThreadStart(SplashStart)); 
            t.Start();
            Thread.Sleep(5000);
            InitializeComponent();  
            t.Abort();
            //This loads and then runs the User Login Form
            Application.Run(new UserLogin());
            //This opens and runs the Main Form
            InitializeComponent();
            //This displays the entered name of the new user and their current score
            txtCurrentPlayerName.Text = CurrentPlayer.CurrentPlayerName;
            txtCurrentPlayerScoreValue.Text = CurrentPlayer.CurrentPlayerScore.ToString();
            //This removes all past text box contents 
            txtCurrentPlayerName.TabStop = false;
            txtCurrentPlayerScoreValue.TabStop = false;
            txtHighScoreName.TabStop = false;
            txtHighScoreValue.TabStop = false;
        public void SplashStart()
            Application.Run(new frmSplashScreen());
        //This reads the HighScore.txt file line by line and retrieves the first and second lines and assigns them as 
        //the HighScoreName and HighScoreValue variables.
        //The line requested is returned to where the method was called.
        public string ReadLine(string FilePath, int LineNumber)
            string result = "";
            try
                if (File.Exists(FilePath))
                    using (StreamReader _StreamReader = new StreamReader(FilePath))
                        for (int a = 0; a < LineNumber; a++)
                            result = _StreamReader.ReadLine();
            catch
                //if the file doesn't exist, the catch handles the exception
                MessageBox.Show("Can't find the High Score text file!", "Can't open file.", MessageBoxButtons.OK, MessageBoxIcon.Error);
            return result;
        private void frmMain_Load(object sender, EventArgs e)
            //The ReadLine method is executed - the path of the text file to be read and the line to be returned are passed as a parameter.
            //    ../../../ is used to go back throught three of the folders to retrieve the text file
            string HighScoreName = ReadLine(@"../../HighScore.txt", 1);  
            txtHighScoreName.Text = HighScoreName;
            //This assigns the Highscore Name to the global high score name variable in the HighScorePlayer Class 
            HighScorePlayer.HighScorePlayerName = HighScoreName;
            //the ReadLine method  executed - the path of the text file to be read and the line to be returned are passed as a parameter.
            string line2 = ReadLine(@"../../HighScore.txt", 2);
            Int16 HighScoreValue = Int16.Parse(line2);
            txtHighScoreValue.Text = HighScoreValue.ToString(); 
            HighScorePlayer.HighScorePlayerScore = HighScoreValue;
        //On-click of this button, the form for Question 1 will open.
        //Then the button for Question 1 will become Read-Only
        private void btnQ1_Click_1(object sender, EventArgs e)  
             //This instantiates a new Form
             Form myQuestion1 = new frmQuestion1();
             //This shows the form
             myQuestion1.Show();
             btnQ1.Enabled = false;
         //On-click of this button, the form for Question 2 will open.
         //Then the button for Question 2 will become Read-Only
         private void btnQ2_Click(object sender, EventArgs e)
             //This instantiates a new Form
             Form myQuestion2 = new frmQuestion2();
             //This shows the form
             myQuestion2.Show();
             btnQ2.Enabled = false;
         //On-click of this button, the form for Question 3 will open.
         //Then the button for Question 3 will become Read-Only
         private void btnQ3_Click(object sender, EventArgs e)
             //This instantiates a new Form
             Form myQuestion3 = new frmQuestion3();
             //This shows the form
             myQuestion3.Show();
             btnQ3.Enabled = false;
         //On-click of this button, the form for Question 4 will open.
         //Then the button for Question 4 will become Read-Only
         private void btnQ4_Click(object sender, EventArgs e)
             //This instantiates a new Form
             Form myQuestion4 = new frmQuestion4();
             //This shows the form
             myQuestion4.Show();
             btnQ4.Enabled = false;
         //On-click of this button, the form for Question 5 will open.
         //Then the button for Question 5 will become Read-Only
         private void btnQ5_Click(object sender, EventArgs e)
             //This instantiates a new Form
             Form myQuestion5 = new frmQuestion5();
             //This shows the form
             myQuestion5.Show();
             btnQ5.Enabled = false;
         //On-click of this button, the form for Question 6 will open.
         //Then the button for Question 6 will become Read-Only
         private void btnQ6_Click(object sender, EventArgs e)
             //This instantiates a new Form
             Form myQuestion6 = new frmQuestion6();
             myQuestion6.Show();
             btnQ6.Enabled = false;
        //When the form is opened again after a past game, then the current score textbox is updated
        protected override void OnActivated(EventArgs e)
            txtCurrentPlayerScoreValue.Text = CurrentPlayer.CurrentPlayerScore.ToString();
            base.OnActivated(e);
        //If the player has beaten the highscore, then a message will appear, notifying that. 
        private void btnClose_Click(object sender, EventArgs e)
            if (MessageBox.Show("Are you sure you wish to exit?", "Exit", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
                if (CurrentPlayer.CurrentPlayerScore > HighScorePlayer.HighScorePlayerScore)
                    MessageBox.Show("Congratulations, you have beaten the high score!", "Well Done!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                    string filePath = "../../HighScore.txt";
                    string[] fileLinesToBeWritten = { CurrentPlayer.CurrentPlayerName, CurrentPlayer.CurrentPlayerScore.ToString() };
                    File.WriteAllLines(filePath, fileLinesToBeWritten);
                    Application.Exit();
                else
                    MessageBox.Show("Looks like your score hasn't improved,\nBetter luck next time!", "Ah well!", MessageBoxButtons.OK, MessageBoxIcon.Hand);
                    Application.Exit();
         //On-click of this exit button, the program is closed
         private void btnExit_Click(object sender, EventArgs e)
             Application.Exit();
Then my code for that pesky label:
     lblScore.Text = calculateScore.ToString();
And for the drag and drop question:
namespace GermanQuiz
    public partial class frmQuestion2 : Form
        public frmQuestion2()
            InitializeComponent();
        //This enables "Allow Drop" to drag and drop pictures held in the pictureboxes.
        private void frmQuestion2_Load(object sender, EventArgs e)
            pictureBox1.AllowDrop = true;
            pictureBox2.AllowDrop = true;
            pictureBox3.AllowDrop = true;
            pictureBox4.AllowDrop = true;
            pictureBox5.AllowDrop = true;
            pictureBox6.AllowDrop = true;
        //This creates two variables: one to hold the picturebox tag (selectedPicture) and one 
        //to hold the correct picture score.
        public static String selectedPicture;
        public static int calculateScore;
        //On click of the button, this creates an event (MouseDown) on the picture on the left and then a copy of the picture to drop on the right is made.
        //Also the picture tag to a temporary string variable (selectedPicture) is copied to use later. "On Drop" to see the if correct picture was
        //selected.
        //First for Picture Box 1
        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
            selectedPicture = pictureBox1.Tag.ToString();
            pictureBox1.DoDragDrop(pictureBox1.Image, DragDropEffects.Copy);
        //Then for Picture Box 2
        private void pictureBox2_MouseDown(object sender, MouseEventArgs e)
            selectedPicture = pictureBox2.Tag.ToString();
            pictureBox2.DoDragDrop(pictureBox2.Image, DragDropEffects.Copy);
        //And finally for Picture Box 3
        private void pictureBox3_MouseDown(object sender, MouseEventArgs e)
            selectedPicture = pictureBox3.Tag.ToString();
            pictureBox3.DoDragDrop(pictureBox3.Image, DragDropEffects.Copy);
        //Pictures dropped on the right hand side will be copied to the pictureBox. 
        //Also "Allow Drop" the picture that is dropped to finalise the selection. 
        //First for Picture Box 4
        private void pictureBoxA_DragDrop(object sender, DragEventArgs e)
            pictureBox4.Image = (Image)e.Data.GetData(DataFormats.Bitmap);
            pictureBox4.AllowDrop = false;
            if (selectedPicture == pictureBox4.Tag.ToString())
                calculateScore += 1;
        private void pictureBoxA_DragEnter(object sender, DragEventArgs e)
            e.Effect = DragDropEffects.Copy;
        //Then for Picture Box 5
        private void pictureBoxB_DragDrop(object sender, DragEventArgs e)
            pictureBox5.Image = (Image)e.Data.GetData(DataFormats.Bitmap);
            pictureBox5.AllowDrop = false;
            if (selectedPicture == pictureBox5.Tag.ToString())
                calculateScore += 1;
        private void pictureBoxB_DragEnter(object sender, DragEventArgs e)
            e.Effect = DragDropEffects.Copy;
        //And finally for Picture Box 6
        private void pictureBoxC_DragDrop(object sender, DragEventArgs e)
            pictureBox6.Image = (Image)e.Data.GetData(DataFormats.Bitmap);
            pictureBox6.AllowDrop = false;
            if (selectedPicture == pictureBox6.Tag.ToString())
                calculateScore += 1;
        private void pictureBoxC_DragEnter(object sender, DragEventArgs e)
            e.Effect = DragDropEffects.Copy;
        //This makes the submit button Read-Only, then it calculates 
        //the scores from your answers, and sums them to the total score.
        private void btnSubmit2_Click(object sender, EventArgs e)
            btnSubmit2.Enabled = false;
            lblScore.Text = calculateScore.ToString();
            CurrentPlayer.CurrentPlayerScore += calculateScore;
        //This closes the form once the "Exit" button is clicked
        private void btnExit2_Click(object sender, EventArgs e)
            this.Close();
My Currentplayer/Highscore classes:
namespace GermanQuiz
    class CurrentPlayer
        public static String CurrentPlayerName;
        public static int CurrentPlayerScore;
namespace GermanQuiz
    class HighScorePlayer
        public static String HighScorePlayerName;
        public static Int16 HighScorePlayerScore;
I just don't see what's wrong. Can you please Help me!

Answer 1

Try changing the streamreader to code below
//This reads the HighScore.txt file line by line and retrieves the first and second lines and assigns them as
//the HighScoreName and HighScoreValue variables.
//The line requested is returned to where the method was called.
StreamReader _StreamReader = null;
public string ReadLine(string FilePath)
if(_StreamReader == null)
if (File.Exists(FilePath))
_StreamReader = new StreamReader(FilePath);
string result = "";
try
if(_StreamReader != null)
using (_StreamReader)
result = _StreamReader.ReadLine();
catch
//if the file doesn't exist, the catch handles the exception
MessageBox.Show("Can't find the High Score text file!", "Can't open file.", MessageBoxButtons.OK, MessageBoxIcon.Error);
return result;
jdweng