I use a .NET Winform version teechart 4.1.2012.1032.
I modified the sample that you supplied. "Extended\Reducing number of points\DownSampling Additions"
But When I zoom in chart, fastline's marks count is not 100 , downSampling.DisplayedPointCount.
How can I resolve it?
private void InitializeChart()
{
this.cursorTool1 = new Steema.TeeChart.Tools.CursorTool();//
this.tChart1.Tools.Add(this.cursorTool1);//
this.cursorTool1.FollowMouse = true;//
this.cursorTool1.Style = Steema.TeeChart.Tools.CursorToolStyles.Vertical;//
this.cursorTool1.Change += new Steema.TeeChart.Tools.CursorChangeEventHandler(this.cursorTool1_Change);//
CreateArrays();
tChart1.Aspect.View3D = false;
tChart1.Zoom.Direction = ZoomDirections.Both;//.Horizontal;//
tChart1.Series.Add(points = new Steema.TeeChart.Styles.Points());
tChart1.Series.Add(fastLine = new Steema.TeeChart.Styles.FastLine());
downSampling = new Steema.TeeChart.Functions.DownSampling(tChart1.Chart);
points.Add(xValues, yValues);
points.Active = false;
downSampling.DisplayedPointCount = 100;
downSampling.Method = Steema.TeeChart.Functions.DownSamplingMethod.MinMaxFirstLast;// Null;
fastLine.TreatNulls = Steema.TeeChart.Styles.TreatNullsStyle.DoNotPaint;
fastLine.DataSource = points;
fastLine.Function = downSampling;
this.tChart1.Axes.Custom.Add(new Steema.TeeChart.Axis(this.tChart1.Chart));//
this.tChart1[1].CustomVertAxis = this.tChart1.Axes.Custom[0];//
this.tChart1[0].CustomVertAxis = this.tChart1.Axes.Custom[0];//
this.fastLine.Marks.Visible = true;//
}
private void CreateArrays()
{
int length = 2600000;
xValues = new Nullable<double>[length];
yValues = new Nullable<double>[length];
Random rnd = new Random();
for (int i = 0; i < length; i++)
{
xValues[i] = i;
yValues[i] = i;
}
}
private void tChart1_Zoomed(object sender, EventArgs e)
{
tChart1[1].CheckDataSource(); //series 1 is the function series
}
The DisplayedPointCount specifies how many points the DownSampling function should paint and displays this number as a maximum number of points. As I explained here, you may need to combine it with Tolerance property to get the results you expect. So, you could do something like this:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
InitializeChart();
}
private void InitializeChart()
{
//tChart1.Dock = DockStyle.Fill;
tChart1.Aspect.View3D = false;
tChart1.Zoomed += tChart1_Zoomed;
Steema.TeeChart.Styles.Points points1 = new Steema.TeeChart.Styles.Points(tChart1.Chart);
Random y = new Random();
for (int i = 0; i < 10000; i++)
{
points1.Add(DateTime.Now.AddHours(i), y.Next());
}
points1.XValues.DateTime = true;
points1.Pointer.HorizSize = 1;
points1.Pointer.VertSize = 1;
Steema.TeeChart.Functions.DownSampling downSampling1 = new Steema.TeeChart.Functions.DownSampling(tChart1.Chart);
downSampling1.Method = Steema.TeeChart.Functions.DownSamplingMethod.Average;
downSampling1.Tolerance = 100;
downSampling1.DisplayedPointCount = Convert.ToInt32(downSampling1.Tolerance * 4);
Steema.TeeChart.Styles.Line line1 = new Steema.TeeChart.Styles.Line(tChart1.Chart);
line1.Function = downSampling1;
line1.DataSource = points1;
line1.Marks.Visible = true;
line1.Marks.Style = MarksStyles.PointIndex;
UpdateTitle();
}
void tChart1_Zoomed(object sender, EventArgs e)
{
tChart1[1].CheckDataSource();
UpdateTitle();
}
private void UpdateTitle()
{
tChart1.Header.Text = (tChart1[1].Function as Steema.TeeChart.Functions.DownSampling).DisplayedPointCount.ToString();
}
}
I have a feeling that Im am missing something obvious but:
I have a single row of pictures in a form, in theory the pictures could go on forever. I need a scroll bar so that the user can look at all of the pictures in the row. I know I need to enable auto scroll but I have no idea how to enable it. Can someone tell me how to enable it or something that I am missing?
If it helps this is the code i am using to generate the pictures:
private void imagePalletToolStripMenuItem_Click(object sender, EventArgs e)
{
MyPalletGui.Show();
Dictionary<string,Bitmap> MyPallet = MyImageCollection.ToDictionary();
int xcor = -50;
int ycor = 0;
foreach (Bitmap curtImage in MyPallet.Values){
PictureBox myPicBox = new PictureBox();
xcor += 50;
myPicBox.Location = new Point(xcor, ycor);
myPicBox.Width = 50;
myPicBox.Height = 50;
myPicBox.Visible = true;
myPicBox.Image = new Bitmap(curtImage);
this.MyPalletGui.Controls.Add(myPicBox);
This code will do exactly what you want, it uses the Form as the ViewPort with AutoScroll:
public Form1()
{
InitializeComponent();
PopulatePictures();
}
private void PopulatePictures()
{
this.AutoScroll = true;
string[] list = Directory.GetFiles(#"C:\\Users\\Public\\Pictures\\Sample Pictures", "*.jpg");
PictureBox[] picturebox= new PictureBox[list.Length];
int y = 100;
for (int index = 0; index < picturebox.Length; index++)
{
picturebox[index] = new PictureBox();
this.Controls.Add(picturebox[index]);
picturebox[index].Location=new Point(index * 120, y);
if(x%12 == 0)
y = y + 150;
picturebox[index].Size = new Size(100,120);
picturebox[index].Image = Image.FromFile(list[index]);
}
}
I'd like to modify this PictureBox Array Project.
i want to put a reset button than will clear all the PictureBox Array it created
more likely the form will be empty again as like from the beginning.
this is some of it's code;
// Function to add PictureBox Controls
private void AddControls(int cNumber)
{
imgArray = new System.Windows.Forms.PictureBox[cNumber]; // assign number array
for (int i = 0; i < cNumber; i++)
{
imgArray[i] = new System.Windows.Forms.PictureBox(); // Initialize one variable
}
// When call this function you determine number of controls
}
private void ImagesInFolder()
{
FileInfo FInfo;
// Fill the array (imgName) with all images in any folder
imgName = Directory.GetFiles(Application.StartupPath + #"\Images");
// How many Picture files in this folder
NumOfFiles = imgName.Length;
imgExtension = new string[NumOfFiles];
for (int i = 0; i < NumOfFiles; i++)
{
FInfo = new FileInfo(imgName[i]);
imgExtension[i] = FInfo.Extension; // We need to know the Extension
//
}
}
private void ShowFolderImages()
{
int Xpos = 8;
int Ypos = 8;
Image img;
Image.GetThumbnailImageAbort myCallback =
new Image.GetThumbnailImageAbort(ThumbnailCallback);
MyProgress.Visible = true;
MyProgress.Minimum = 1;
MyProgress.Maximum = NumOfFiles;
MyProgress.Value = 1;
MyProgress.Step = 1;
string[] Ext = new string [] {".GIF", ".JPG", ".BMP", ".PNG"};
AddControls(NumOfFiles);
for (int i = 0; i < NumOfFiles; i++)
{
switch (imgExtension[i].ToUpper())
{
case ".JPG":
case ".BMP":
case ".GIF":
case ".PNG":
img = Image.FromFile(imgName[i]); // or img = new Bitmap(imgName[i]);
imgArray[i].Image = img.GetThumbnailImage(64, 64, myCallback, IntPtr.Zero);
img = null;
if (Xpos > 432) // six images in a line
{
Xpos = 8; // leave eight pixels at Left
Ypos = Ypos + 72; // height of image + 8
}
imgArray[i].Left = Xpos;
imgArray[i].Top = Ypos;
imgArray[i].Width = 64;
imgArray[i].Height = 64;
imgArray[i].Visible = true;
// Fill the (Tag) with name and full path of image
imgArray[i].Tag = imgName[i];
imgArray[i].Click += new System.EventHandler(ClickImage);
this.BackPanel.Controls.Add(imgArray[i]);
Xpos = Xpos + 72; // width of image + 8
Application.DoEvents();
MyProgress.PerformStep();
break;
}
}
MyProgress.Visible = false;
}
private bool ThumbnailCallback()
{
return false;
}
private void btnLoad_Click(object sender, System.EventArgs e)
{
ImagesInFolder(); // Load images
ShowFolderImages(); // Show images on PictureBox array
this.Text = "Click wanted image";
}
how can i do that?
sorry i don't have any code for the reset button yet.
i don't know what to do, i am new to c#.
You can just set the image to null:
private void Clear()
{
foreach (var pictureBox in imgArray)
{
pictureBox.Image = null;
pictureBox.Invalidate();
}
}
I will follow this steps to be sure everything will be fred :
private void btnReset_Click(object sender, System.EventArgs e)
{
for(int x = this.BackPanel.Controls.Count - 1; x >= 0; x--)
{
if(this.BackPanel.Controls[x].GetType() == typeof(PictureBox))
this.BackPanel.Controls.Remove(x);
}
for(int x = 0; x < imgArray.Length; x++)
{
imgArray[x].Image = null;
imgArray[x] = null;
}
}
Assuming there are no other child controls in this.Backpanel (the container control that is actually displaying your images), this will probably work:
private void ClearImages() {
this.BackPanel.Controls.Clear();
imgArray = null;
}
Good Luck!
If you are drawing on a pictureBox and you want to clear it:
Graphics g = Graphics.FromImage(this.pictureBox1.Image);
g.Clear(this.pictureBox1.BackColor);
After that you can draw again on the control.
I hope this can help to someone.
I need help with the Check button. After a user adds all the 42 numbers in the textbox and enter a number from 0-9 in the "Enter number" area and clicks on the start button, next what he should do is run through the array of labels with the red label or lblCovece and he should collect the same values like the number enters before. And after he clicks on the Check button, the programme should first validate if the value that is selected with the red label is the same as the number entered. If is valid the label should turn green and than the result should appear in the label lblResultE(the result for example should be like this: if the number entered is 2, the result it is 2+2+2...)and if is not valid in the lblResultE we take out 10 points. That's what i did by now with some help.:) thank you.
namespace Seminarska
{
public partial class Form1 : Form
{
private Label l,l2,lblCovece,l4,lblResultE;
private Button bUp, bRight, bLeft, bDown, bCheck,bStart, bReset;
private TextBox txtVnes, txtGoal;
private Label[] pole;
public Form1()
{
InitializeComponent();
l2 = new Label();
l2.Text = " Enter one number";
l2.Location = new Point(230, 200);
l2.AutoSize = true;
l4 = new Label();
l4.Text = "Score";
l4.Location = new Point(240, 260);
l4.AutoSize = true;
lblResultE = new Label();
lblResultE.Location = new Point(350, 260);
lblResultE.AutoSize = true;
bLeft = new Button();
bLeft.Location = new Point(0, 250);
bLeft.Width=75;
bLeft.Height = 25;
bLeft.Text = "LEFT";
bCheck = new Button();
bCheck.Location = new Point(75, 250);
bCheck.Width = 75;
bCheck.Height = 25;
bCheck.Text = "Check";
bRight = new Button();
bRight.Location = new Point(150, 250);
bRight.Width = 75;
bRight.Height = 25;
bRight.Text = "RIGHT";
bUp = new Button();
bUp.Location = new Point(75, 220);
bUp.Width = 75;
bUp.Height = 25;
bUp.Text = "UP";
bDown = new Button();
bDown.Location = new Point(75, 280);
bDown.Width = 75;
bDown.Height = 25;
bDown.Text = "DOWN";
bStart = new Button();
bStart.Location = new Point(240, 165);
bStart.Width = 75;
bStart.Height = 25;
bStart.Text = "START";
bReset = new Button();
bReset.Location = new Point(320, 165);
bReset.Width = 75;
bReset.Height = 25;
bReset.Text = "RESET";
txtVnes = new TextBox();
txtVnes.Location = new Point(240, 10);
txtVnes.Width = 160;
txtVnes.Height = 130;
txtVnes.Multiline = true;
txtGoal = new TextBox();
txtGoal.Width = 75;
txtGoal.Height = 25;
txtGoal.Location = new Point(330, 200);
lblCovece = new Label();
lblCovece.Location = new Point(160,165);
lblCovece.Width = 20;
lblCovece.Height = 20;
lblCovece.TextAlign = ContentAlignment.MiddleCenter;
lblCovece.Text = "O";
lblCovece.BackColor = Color.FromArgb(255, 0, 0);
int a = 0;
pole = new Label[42];
this.Controls.Add(lblCovece);
for (int i = 1; i <= 6; i++)
{
for (int j = 1; j <= 7; j++)
{
l = new Label();
l.Name = "label" + i.ToString() + j.ToString();
l.Text = "Z";
l.Width = 20;
l.Height = 20;
l.TextAlign = ContentAlignment.MiddleCenter;
l.Parent = this;
l.BackColor = Color.FromArgb(100, 149, 237);
l.Location = new Point(10 + (j - 1) * 25, 15 + (i - 1) * 25);
pole[a] = l;
this.Controls.Add(l);
a++;
}
}
this.Width = 460;
this.Height = 380;
this.Controls.Add(l2);
this.Controls.Add(l4);
this.Controls.Add(lblResultE);
this.Controls.Add(lblTimeE);
this.Controls.Add(bStart);
this.Controls.Add(bReset);
this.Controls.Add(txtGoal);
this.Controls.Add(txtVnes);
this.Controls.Add(bUp);
this.Controls.Add(bLeft);
this.Controls.Add(bRight);
this.Controls.Add(bDown);
this.Controls.Add(bCheck);
bStart.Click+=new EventHandler(bStart_Click);
bUp.Click+=new EventHandler(bUp_Click);
bDown.Click+=new EventHandler(bDown_Click);
bLeft.Click+=new EventHandler(bLeft_Click);
bRight.Click+=new EventHandler(bRight_Click);
bCheck.Click+=new EventHandler(bZemaj_Click);
bReset.Click+=new EventHandler(bReset_Click);
}
private void bStart_Click(object sender, EventArgs e)
{
string Str = txtGoal.Text.Trim();
int Num;
bool isNum = int.TryParse(Str, out Num);
if (isNum && Str.Length == 1)
{
string[] ts = txtVnes.Text.Split(
new string[] { "\r\n" },
StringSplitOptions.RemoveEmptyEntries);
int row = 0;
for (int i = 0; i < ts.Length && row < 6; i++)
{
if (LineIsValid(ts[i]))
{
for (int col = 0; col < 7; col++)
{
pole[row * 7 + col].Text = ts[i][2 * col].ToString();
}
row++;
}
}
for (; row < 6; row++)
{
for (int col = 0; col < 7; col++)
{
pole[row * 7 + col].Text = "Z";
}
}
}
else
{
MessageBox.Show("Invalid Input");
}
}
private static Regex regex = new Regex(#"^(\s)*(\d ){6}\d(\s)*$");
private static bool LineIsValid(string line)
{
return regex.IsMatch(line);
}
private void bReset_Click(object sender, EventArgs e)
{
txtVnes.Clear();
string[] ts = txtVnes.Text.Split(new string[] { "\r\n" },
StringSplitOptions.RemoveEmptyEntries);
int row = 0;
for (int i = 0; i < ts.Length && row < 6; i++)
{
for (int col = 0; col < 7; col++)
{
pole[row * 7 + col].Text = "Z";
pole[row * 7 + col].BackColor=Color.FromArgb(100, 149, 237);
}
row++;
}
for (; row < 6; row++)
{
for (int col = 0; col < 7; col++)
{
pole[row * 7 + col].Text = "Z";
pole[row * 7 + col].BackColor = Color.FromArgb(100, 149, 237);
}
}
txtGoal.Clear();
lblCovece.Location=new Point(160,165);
}
private void bUp_Click(object sender, EventArgs e)
{
lblCovece.Location = new Point(lblCovece.Location.X, lblCovece.Location.Y -
25);
}
private void bDown_Click(object sender, EventArgs e)
{
lblCovece.Location = new Point(lblCovece.Location.X, lblCovece.Location.Y +
25);
}
private void bLeft_Click(object sender, EventArgs e)
{
lblCovece.Location = new Point(lblCovece.Location.X - 25,
lblCovece.Location.Y);
}
private void bRight_Click(object sender, EventArgs e)
{
lblCovece.Location = new Point(lblCovece.Location.X + 25,
lblCovece.Location.Y);
}
private void bCheck_Click(object sender, EventArgs e)
{
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
}
What makes your programm complicated and difficult to understand, is that you mix game logic with display logic.
I suggest you to redesign your game. It could look something like this:
public enum State
{
Empty, // Displays "Z"
Neutral, // Blue
Good, // Green
Bad // Red
}
public class Square
{
public int Number { get; set; }
public State State { get; set; }
}
public class Game
{
public const int Width = 7, Height = 6;
public Game()
{
Board = new Square[Width, Height];
}
public event EventHandler GameChanged;
public Square[,] Board { get; private set; }
public int CurrentX { get; private set; }
public int CurrentY { get; private set; }
public void Reset()
{
for (int x = 0; x < Width; x++) {
for (int y = 0; y < Height; y++) {
Board[x, y].State = State.Empty; // Always displayed in blue as "Z"
}
}
OnGameChanged();
}
public void MoveLeft()
{
if (CurrentX > 0) {
CurrentX--;
OnGameChanged();
}
}
public void MoveRight()
{
if (CurrentX < Width - 1) {
CurrentX++;
OnGameChanged();
}
}
// and so on
private void OnGameChanged()
{
EventHandler eh = GameChanged;
if (eh != null) {
eh(this, EventArgs.Empty);
}
}
}
In the form I would define pole to be a matrix as well (like the board). I show only a few relevant parts of the form code, to give you an idea of what I mean:
public class Form1 : Form
{
private Game game;
private Label[,] pole;
public Form1()
{
game = new Game();
game.GameChanged += new EventHandler(Game_GameChanged);
pole = new Label[Game.Width, Game.Height];
// Intialize pole.
// ...
}
void Game_GameChanged(object sender, EventArgs e)
{
for (int x = 0; x < Game.Width; x++) {
for (int y = 0; y < Game.Height; y++) {
Square square = game.Board[x, y];
Label label = pole[x,y];
switch (square.State) {
case State.Empty:
label.BackColor = Color.Blue;
label.Text = "Z";
break;
case State.Neutral:
label.BackColor = Color.Blue;
label.Text = square.Number.ToString();
break;
case State.Good:
label.BackColor = Color.Green;
label.Text = square.Number.ToString();
break;
case State.Bad:
label.BackColor = Color.Red;
label.Text = square.Number.ToString();
break;
default:
break;
}
}
}
// Place lblCovece according to game.CurrentX and game.CurrentY
// ...
}
private void bReset_Click(object sender, EventArgs e)
{
game.Reset();
}
private void bLeft_Click(object sender, EventArgs e)
{
game.MoveLeft();
}
private void bRight_Click(object sender, EventArgs e)
{
game.MoveRight();
}
}
Note how the Game class tells the form when changes happen through the event GameChanged. The form then updates the game display. In the game class, you can now concentrate on the game logic and do not have to deal with buttons and labels. You can also work with logical coordinates in the range [0..6] and [0..5] of the game board. This is easier than working with pixels. You delegate all the pixel calculations to the form.
My example is not complete, but when you try to implement it, you will see that it will be much easier to think about how the logic of the game should work.
Add an int score;
private void bCheck_Click(object sender, EventArgs e)
{
bool found = false;
foreach (Label l in pole)
{
if (l.Location == lblCovece.Location && l.Text == txtGoal.Text)
{
l.BackColor = Color.Green;
score += int.Parse(l.Text);
lblResultE.Text = score.ToString();
found = true;
}
}
if (!found)
{
score -= 10;
lblResultE.Text = score.ToString();
}
}
I tried to add picturebox in windowsform on load event-handler but the images didn't appear in the form after loading
attachimage is a picturebox I added it from toolbox ( not by c# )
private void ViewCmap_Load(object sender, EventArgs e)
{
for (int i = 0; i < ConceptProperties.ConceptsMap.Count; i++)
{
conceptattchboxlist.Add(new PictureBox());
conceptattchboxlist[i].Visible = true;
if (ConceptProperties.ConceptsMap[i].Attachments.Count > 0)
{
PictureBox new_attach_box = new PictureBox();
new_attach_box.Image = attachimage.Image;
new_attach_box.Width = attachimage.Width;
new_attach_box.Height = attachimage.Height;
new_attach_box.BackgroundImageLayout = ImageLayout.Stretch;
new_attach_box.SizeMode = PictureBoxSizeMode.StretchImage;
new_attach_box.Location = new Point(ConceptProperties.ConceptsMap[i].Coords[0] + (ConceptProperties.ConceptsMap[i].Coords[2]), ConceptProperties.ConceptsMap[i].Coords[1] + (ConceptProperties.ConceptsMap[i].Coords[3]));
conceptattchboxlist[i] = new_attach_box;
}
}
for (int i = 0; i < ConceptProperties.ConnectionMap.Count; i++)
{
connectionattchboxlist.Add(new PictureBox());
connectionattchboxlist[i].Visible = true;
if (ConceptProperties.ConnectionMap[i].Attachments.Count > 0)
{
PictureBox new_attach_box = new PictureBox();
new_attach_box.Image = attachimage.Image;
new_attach_box.Width = attachimage.Width;
new_attach_box.Height = attachimage.Height;
new_attach_box.BackgroundImageLayout = ImageLayout.Stretch;
new_attach_box.SizeMode = PictureBoxSizeMode.StretchImage;
new_attach_box.Location = new Point(ConceptProperties.ConceptsMap[i].Coords[0] + (ConceptProperties.ConceptsMap[i].Coords[2]), ConceptProperties.ConceptsMap[i].Coords[1] + (ConceptProperties.ConceptsMap[i].Coords[3]));
new_attach_box.Show();
connectionattchboxlist[i] = new_attach_box;
}
}
}
To add a pictureBox or any control use:
PictureBox pic = new Picturebox();
this.Controls.Add(pic);