Problem when loading images to buttons dynamically in Windows Phone application

See more:

C#

Windows

Silverlight

phone

I am building a windows phone 7 application. I have two groups of three buttons p1b1,p1b2,p1b3 & p2b1,p2b2,p2b3 I am loading the images blue.png, red.png, yellow.png on a random basis to the buttons. Each button in a group should have different colors (i.e p1b1,p1b2,p1b3 should have three different colors). I have written the code in the following way, but when i call the ResetForNextRound() to repaint the buttons, some buttons do not change their background. What can be the problem. Am I not storing the Images in a proper way? Please Suggest.

 public partial class GamePage : PhoneApplicationPage
    {
        IList<ImageBrush> images;
        IList<ImageBrush> images2;
        Random rand = new Random(DateTime.Now.Millisecond);
        Uri[] uri = new Uri[3];
        IList p1numlist;
        IList p2numlist;
        int imageindex;
        int p1score;
        int p2score;
        int roundnumber=1;
        public GamePage()
        {
            InitializeComponent();
            LoadImages();
            image2.Visibility = Visibility.Collapsed;
            image3.Visibility = Visibility.Collapsed;
            PaintButtons();
        }

        public void LoadImages()
        {

            images = new List<ImageBrush>();
            images2 = new List<ImageBrush>();
            uri[0] = new Uri("/BtnPics/Blue.png", UriKind.Relative);
            uri[1] = new Uri("/BtnPics/Red.png", UriKind.Relative);
            uri[2] = new Uri("/BtnPics/Yellow.png", UriKind.Relative);
            
            foreach (Uri u in uri)
            {
                BitmapImage bmp = new BitmapImage(u);
                images.Add(new ImageBrush() { ImageSource = bmp });
                images2.Add(new ImageBrush() { ImageSource = bmp });
            }
        }
        
        public void PaintButtons()
        {
// This is where I am assigning the Background for the buttons. I think this part should be considered.
//When the Backgrounds are sequentially assigned, some of them fail to assign and remain with previous values. I have no idea why this is happening.
            p1numlist = GenerateRandom();
            p2numlist = GenerateRandom();

            p1b1.Background = images[(int)p1numlist[0]];
            p1b2.Background = images[(int)p1numlist[1]]; 
            p1b3.Background = images[(int)p1numlist[2]];
            p2b1.Background = images2[(int)p2numlist[0]];
            p2b2.Background = images2[(int)p2numlist[1]];
            p2b3.Background = images2[(int)p2numlist[2]];
            imageindex = rand.Next(3);
            image1.Source = new BitmapImage(uri[imageindex]);

            
        }
        public List<int> GenerateRandom()
        {
            
            List<int> numlist = new List<int>();
            numlist.Add(rand.Next(3));
            int count = 0;
            do
            {
                int num = rand.Next(3);
                if (!numlist.Contains(num))
                {
                    numlist.Add(num);
                    count++;
                }

            } while (count < 2);
            return numlist;
        }
        bool PlayerOne = false;
        bool PlayerTwo = false;
        bool SomeoneScored=false;
        public void ProcessPress(object sender)
        {
            Button b = sender as Button;
            if (b.Name.StartsWith("p1"))
            {
                PlayerOne = true;
                DisableButtonsExceptPressed(sender);
            }
            if(b.Name.StartsWith("p2"))
            { 
                PlayerTwo = true;
                DisableButtonsExceptPressed(sender);
            }
            MatchImage(sender);
        }
        public void DisableButtonsExceptPressed(object sender)
        {
            Button b = sender as Button;

            if (b.Name.StartsWith("p1"))
            {
                p1b1.IsEnabled = false;
                p1b2.IsEnabled = false;
                p1b3.IsEnabled = false;
                b.IsEnabled = true;
            }
            if(b.Name.StartsWith("p2"))
            {
                p2b1.IsEnabled = false;
                p2b2.IsEnabled = false;
                p2b3.IsEnabled = false;
                b.IsEnabled = true;
            }
            
        }

        public void MatchImage(object sender)
        {
            
            Button b = sender as Button;
            int buttonnumber = (int)(b.Name[3]);
            
            if (b.Name.StartsWith("p1"))
                if (imageindex == (int)p1numlist[buttonnumber-49])
                {
                        p1score++;//matched for player one
                        image2.Visibility = Visibility.Visible;
                        SomeoneScored = true;
                        DisableAllButtons(); //disable all buttons
                }
            if(b.Name.StartsWith("p2"))
                if (imageindex == (int)p2numlist[buttonnumber-49])
                {
                        p2score++;//matched for player two
                        image3.Visibility = Visibility.Visible;
                        SomeoneScored = true;
                        DisableAllButtons(); //disable all buttons
                }
            if ((PlayerOne == true && PlayerTwo == true)||SomeoneScored==true)
            {
                roundnumber++;
                ResetForNextRound();
                
            }
            
        }
        public void DisableAllButtons()
        {
            p1b1.IsEnabled = false;
            p1b2.IsEnabled = false;
            p1b3.IsEnabled = false;
            p2b1.IsEnabled = false;
            p2b2.IsEnabled = false;
            p2b3.IsEnabled = false;
            //DisplayWhoScored(sender);
        }
public void ResetForNextRound()
        {
            if (roundnumber <= 10)
            {
                //SetNullBackground();
                EnableAllButtons();
                LoadImages();
                PaintButtons();
                p1Scorelabel.Text = p1score.ToString();
                p2Scorelabel.Text = p2score.ToString();
                p1Roundlabel.Text = roundnumber.ToString();
                p2Roundlabel.Text = roundnumber.ToString() ;
                image2.Visibility = Visibility.Collapsed;
                image3.Visibility = Visibility.Collapsed;
                PlayerOne = false;
                PlayerTwo = false;
                SomeoneScored = false;
            }
           
                
        }
                
        public void EnableAllButtons()
        {
            p1b1.IsEnabled = true;
            p1b2.IsEnabled = true;
            p1b3.IsEnabled = true;
            p2b1.IsEnabled = true;
            p2b2.IsEnabled = true;
            p2b3.IsEnabled = true;
        }

//ignore the following part.
        private void p1b1_ManipulationStarted(object sender, ManipulationStartedEventArgs e)
        {
            ProcessPress(sender);
        }

        private void p1b2_ManipulationStarted(object sender, ManipulationStartedEventArgs e)
        {
            ProcessPress(sender);
        }

        private void p1b3_ManipulationStarted(object sender, ManipulationStartedEventArgs e)
        {
            ProcessPress(sender);
        }

        private void p2b1_ManipulationStarted(object sender, ManipulationStartedEventArgs e)
        {
            ProcessPress(sender);
        }

        private void p2b2_ManipulationStarted(object sender, ManipulationStartedEventArgs e)
        {
            ProcessPress(sender);
        }

        private void p2b3_ManipulationStarted(object sender, ManipulationStartedEventArgs e)
        {
            ProcessPress(sender);
        }

    }</int></int></int>

Maybe I am dumping a whole lot of code here, but I wasn't sure which part is actually causing the problem. Sorry for the trouble.