Why when saving the image that the trackBar1 value is on i see a different saved image ?

Question

private void trackBar1_Scroll(object sender, EventArgs e)
LoadPictureAt(trackBar1.Value, sender);
ConvertedBmp = ConvertTo24(trackBar1FileInfo[trackBar1.Value].FullName);
ConvertedBmp.Save(ConvertedBmpDir + "\\ConvertedBmp.bmp");
mymem = ToStream(ConvertedBmp, ImageFormat.Bmp);
backTexture = TextureLoader.FromStream(D3Ddev, mymem);
scannedCloudsTexture = new Texture(D3Ddev, 512, 512, 1, Usage.Dynamic, Format.A8R8G8B8, Pool.Default);
timer1.Stop();
Button1Code();
timer1.Start();
b1 = new Bitmap(trackBar1FileInfo[trackBar1.Value].FullName);//ConvertedBmp;
b1.Save(ConvertedBmpDir + "\\b1.bmp");
The image in b1.bmp is not the same one i see in the pictureBox1 and the trackBar1FileInfo.
The trackBar1 Value is the same but the image is not. Maybe it happen since i'm moving too fast the trackBar1 so i can see it in the break point and therefore the image i see in the pictureBox is not the same one in the Value ? 
This is the method LoadPictureAt:
private bool LoadPictureAt(int nIndex, object c)
bool bRet = false;
if (nIndex >= 0 && nIndex < trackBar1FileInfo.Length)
if (c.Equals(trackBar1))
pictureBox1.Load(trackBar1FileInfo[nIndex].FullName);
bRet = true;
if (bitmaps != null)
if (nIndex >= 0 && nIndex < bitmaps.Length)
if (c.Equals(trackBar2))
pictureBox1.Image = bitmaps[nIndex];
bRet = true;
return bRet;
For some reason the image i see in the pictureBox1 is not the same that i save in b1 when scrolling the trackBar1.

Answer 1

I tested again.
Now i see in pictureBox1 image and the ime is 09:20:
I moved the trackBar1 to the left and i see 09:20 
And b1 on the hard disk is also 09:20 also same date 02/01/2015
But the Gifs on my hard disk i see they were created from image date 22/01/2015 time 14:10 
I mean they created now but the image they were created from is not the same one.
It seems like for some reason b1 is different ? Not sure how.
In the trackBar1 scroll event i have:
private void trackBar1_Scroll(object sender, EventArgs e)
LoadPictureAt(trackBar1.Value, sender);
ConvertedBmp = ConvertTo24(trackBar1FileInfo[trackBar1.Value].FullName);
ConvertedBmp.Save(ConvertedBmpDir + "\\ConvertedBmp.bmp");
mymem = ToStream(ConvertedBmp, ImageFormat.Bmp);
backTexture = TextureLoader.FromStream(D3Ddev, mymem);
scannedCloudsTexture = new Texture(D3Ddev, 512, 512, 1, Usage.Dynamic, Format.A8R8G8B8, Pool.Default);
timer1.Stop();
Button1Code();
timer1.Start();
b1 = new Bitmap(trackBar1FileInfo[trackBar1.Value].FullName);//ConvertedBmp;
b1.Save(ConvertedBmpDir + "\\b1.bmp");
trackBar2.Enabled = false;
if (!this.backgroundWorker1.IsBusy)
label2.Text = "מעבד נתונים";
this.backgroundWorker1.RunWorkerAsync();
else
this.backgroundWorker1.CancelAsync();
I do save b1 as it is in the pictureBox1 same trackBar1 value.
Then in the backgroundworker do event i'm doing:
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
BackgroundWorker bgw = (BackgroundWorker)sender;
if (bgw.CancellationPending == true)
return;
else
while (true)
bitmaps = new Bitmap[14];
bitmaps = ImagesComparison.get_images_with_clouds(b1);
for (int i = 0; i < bitmaps.Length; i++)
ConvertTo1or8Bit.BitmapToGIF(bitmaps[i], @"c:\convertedgifs\" + i.ToString("D6") + ".gif");
break;
With the line: bitmaps = new Bitmap[14]; or without for some reason it's creating the gifs file of something else not the same b1 saved on my hard disk.
The method BitmapToGif is:
public static void BitmapToGIF(Bitmap BitmapFile, string GIFFile)
using (Bitmap bitMap = new Bitmap(BitmapFile))
var codecInfo = ImageCodecInfo.GetImageEncoders().FirstOrDefault(x => x.FormatID == ImageFormat.Gif.Guid);
using (var paramsEncoder = new EncoderParameters(2))
paramsEncoder.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Compression, (long)EncoderValue.CompressionLZW);
paramsEncoder.Param[1] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 0L);
bitMap.Save(GIFFile, codecInfo, paramsEncoder);
I don't understand why the Gifs it's creating in the loop are different.
This is the get_images_with_clouds method:
public static Bitmap[] get_images_with_clouds(Bitmap radar_image)
int e = 0;
int f = 0;
int image_clock_area_x = 0;
int image_clock_area_y = 0;
int image_clock_area_x1 = 140;
int image_clock_area_y1 = 21;
Bitmap[] localImages;
localImages = new Bitmap[15];
Bitmap image;
image = new Bitmap(Properties.Resources.radar_without_clouds);
BitmapData bmD = null;
BitmapData bmD2 = null;
try
bmD = image.LockBits(new Rectangle(0, 0, image.Width, image.Height), ImageLockMode.ReadWrite,
PixelFormat.Format32bppArgb);
bmD2 = radar_image.LockBits(new Rectangle(0, 0, radar_image.Width, radar_image.Height), ImageLockMode.ReadOnly,
PixelFormat.Format32bppArgb);
IntPtr sc0 = bmD.Scan0;
unsafe
int* p = (int*)sc0.ToPointer();
int* p2 = (int*)bmD2.Scan0.ToPointer();
for (e = image_clock_area_x; e < image_clock_area_x + image_clock_area_x1; e++)
for (f = image_clock_area_y; f < image_clock_area_y + image_clock_area_y1; f++)
Color clock_color = Color.FromArgb(p2[e + f * bmD2.Width]);
p[e + f * bmD.Width] = clock_color.ToArgb();
image.UnlockBits(bmD);
radar_image.UnlockBits(bmD2);
catch
try
image.UnlockBits(bmD);
catch
try
radar_image.UnlockBits(bmD2);
catch
int c;
for (c = 0; c < localImages.Length; c++)
localImages[c] = new Bitmap(image);
Bitmap new_image = new Bitmap(Properties.Resources.radar_without_clouds);
Bitmap new_image1 = new Bitmap(Properties.Resources.radar_without_clouds);
Bitmap localbmptest = black_and_white(new_image, radar_image);
Image image1 = black_and_white(new_image, radar_image);
image1.Save(@"c:\temp\testclouds666.jpg");
Bitmap clouds = new Bitmap(image1);
int x;
int y;
int a;
int b;
int d = 0;
Bitmap redImage;
redImage = new Bitmap(512, 512);
using (Graphics g = Graphics.FromImage(redImage))
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.Half;
g.Clear(Color.Red);
BitmapData bmData = null;
BitmapData bmData2 = null;
BitmapData bmDataArray = null;
try
bmData = clouds.LockBits(new Rectangle(0, 0, clouds.Width, clouds.Height), ImageLockMode.ReadOnly,
PixelFormat.Format32bppArgb);
bmData2 = radar_image.LockBits(new Rectangle(0, 0, radar_image.Width, radar_image.Height), ImageLockMode.ReadOnly,
PixelFormat.Format32bppArgb);
IntPtr scan0 = bmData.Scan0;
IntPtr scan02 = bmData2.Scan0;
unsafe
int* p = (int*)scan0.ToPointer();
int* p2 = (int*)scan02.ToPointer();
double h, mm;
for (d = 0; d < localImages.Length; d++)
bmDataArray = localImages[d].LockBits(new Rectangle(0, 0, localImages[d].Width, localImages[d].Height), ImageLockMode.ReadWrite,
PixelFormat.Format32bppArgb);
IntPtr scan0Array = bmDataArray.Scan0;
int* pArray = (int*)scan0Array.ToPointer();
for (a = 0; a < new_image.Width; a++)
for (b = 0; b < new_image.Height; b++)
Color color1 = Color.FromArgb(p[a + b * bmData.Width]);
Color color2 = Color.FromArgb(p2[a + b * bmData2.Width]);
if (color1.R != 0 || color1.G != 0 || color1.B != 0)
h = color2.GetHue();
mm = RadarAnalysis.Hue2MMPerHour(h);
if (mm >= treshhold_array[14 - d])
pArray[a + b * bmDataArray.Width] = color2.ToArgb();
localImages[d].UnlockBits(bmDataArray);
clouds.UnlockBits(bmData);
radar_image.UnlockBits(bmData2);
catch (Exception error)
try
clouds.UnlockBits(bmData);
catch
try
radar_image.UnlockBits(bmData2);
catch
try
localImages[d].UnlockBits(bmDataArray);
catch
Logger.Write("Error Exception ==> " + error);
MessageBox.Show("Error Exception ==> " + error);
return localImages;
It's getting the same b1 variable i saved to the hard disk in the trackBar1 scroll event.
And still the Gifs files on the hard disk are not the same b1 image and not what i see on the saved b1 and in the pictureBox1.