C# Save location of drawn Ellipse in List<Point>? - c#

a small question here where I didn't find a proper answer to.
I want to save a drawn location of a Ellipse so I can later on draw a line between 2 ellipses, so I want to save this as a point if this is possible.
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
screen.Clear(Color.Black);
using (var p = new Pen(Color.White, 2))
{
for (int x = 0; x < p1List.Count; x++)
{
screen.DrawLine(p, p1List[x], p2List[x]);
}
}
List<Point> punten = new List<Point>();
foreach (var pair in this.droppedShapes)
{
var shapeType = pair.Item2; // Reveal your own shape object here
var location = pair.Item1;
switch (shapeType) // Reveal your own shape object here
{
case 0:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 40, 40);
screen.DrawString("&", new Font(FontFamily.GenericMonospace, (float)28), whiteBrush, location.X - 11, location.Y - 13);
//input
screen.DrawLine(whitePen, location.X - 25, location.Y, location.X - 10, location.Y );
screen.FillEllipse(greenBrush, location.X - 30, location.Y - 5, 10, 10);
punten.Add(); //add the location of the "ellipse"
//input
screen.DrawLine(whitePen, location.X - 25, location.Y + 20, location.X - 10, location.Y + 20);
screen.FillEllipse(greenBrush, location.X - 30, location.Y + 15, 10, 10);
//output
screen.DrawLine(whitePen, location.X + 30, location.Y + 10, location.X + 45, location.Y + 10);
screen.FillEllipse(greenBrush, location.X + 40, location.Y + 5, 10, 10);
I already added the line "punten.Add()" because this is the line where I want to save the location.
If there is a better way, hit me up!


It seems alright to me, just replace your
punten.Add();
with
punten.Add(new Point(location.X, location.Y));
or something similar for drawing the lines between the locations.
Be aware that this will only add Points to your list, if the case 0 in the switch statement is hit, otherwise your List may not contain any Points (or you add Points to the list in the other case sections).

Related

Calculating Next 10 in Value

I have this code that adds a dot per every 10 pixels (x), and I need to calculate the next 10 pixels per every count from 'Dots' int.
Graphics g = e.Graphics;
int Dots = 6;
g.FillEllipse(b, new Rectangle(x, y, 5, 5));
g.FillEllipse(b, new Rectangle(x + 10, y, 5, 5));
g.FillEllipse(b, new Rectangle(x + 20, y, 5, 5));
if (Dots > 3)
{
for (int i = Dots - 1; i >= 0; i--)
{
// How to iterate next 10 based on the number of values > 3 ?
g.FillEllipse(b, new Rectangle(x, y, 5, 5));
}
}
I need for to iterate each of the follow lines (as a example) and allow it to bump up 10 for every value > 5 found in Dots.
Example -
x + 20, y, 5, 5
x + 30, y, 5, 5
x + 40, y, 5, 5
x + 50, y, 5, 5
etc..
I hope it makes sense. Thank you

SOLVED
for (int i = Dots - 1; i >= 0; i--)
{
g.FillEllipse(b, new Rectangle(x + (i * 10), y, 5, 5));
}
I learned in order to step 10 every iteration, use this in place of the expected value:
(i * 10)

How to print data to next page in C# PrintDocument

I have written this code to print a lab report. It works fine but when I click on the print button and if the data of the report is more than one page it doesn't create the next page. Now I want the multiple-page setting I am totally confused about how to do it.
private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
int position = 60;
for (int j = NoOfItemsTill; j < types.Count; j++)
{
e.Graphics.DrawString(types[j], new Font("Arial", 16, FontStyle.Bold), Brushes.Black, new Point(30, yposition - 30 + position));
e.Graphics.DrawImage(imae, 33, yposition + position, imae.Width, imae.Height);
e.Graphics.DrawString("Test", new Font("Arial", 12, FontStyle.Bold), Brushes.Black, new Point(40, yposition + 5 + position));
e.Graphics.DrawString("Normal Value", new Font("Arial", 12, FontStyle.Bold), Brushes.Black, new Point(310, yposition + 5 + position));
e.Graphics.DrawString("Result ", new Font("Arial", 12, FontStyle.Bold), Brushes.Black, new Point(560, yposition + 5 + position));
if (checkBox1showprise.Checked == true)
{
e.Graphics.DrawString("Price ", new Font("Arial", 12, FontStyle.Bold), Brushes.Black, new Point(700, yposition + 5 + position));
}
for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
if (dataGridView1.Rows[i].Cells[1].Value.ToString() == types[j])
{
e.Graphics.DrawString(dataGridView1.Rows[i].Cells[2].Value.ToString(), new Font("Arial", 12, FontStyle.Regular), Brushes.Black, new Point(30, yposition + 50 + position));
e.Graphics.DrawString(dataGridView1.Rows[i].Cells[3].Value.ToString(), new Font("Arial", 12, FontStyle.Regular), Brushes.Black, new Point(310, yposition + 50 + position));
e.Graphics.DrawString(dataGridView1.Rows[i].Cells[4].Value.ToString(), new Font("Arial", 12, FontStyle.Regular), Brushes.Black, new Point(560, yposition + 50 + position));
if (checkBox1showprise.Checked == true)
{
e.Graphics.DrawString(dataGridView1.Rows[i].Cells[5].Value.ToString(), new Font("Arial", 12, FontStyle.Regular), Brushes.Black, new Point(700, yposition + 50 + position));
}
position += 25;
}
}
yposition = yposition + 100;
}
// reset vaerables
// NoOfItemPerpage = 0;
NoOfItemsTill = 0;
}
I want that after every 5 elements of my array, the next page is created and the data is printed onto the next page.

C# rotate a pdf upon creation

i'm working on method that create a delivery order pdf but recently i have been asked to add more columns in the array. As a result my array doesn't fit in Portrait size anymore so i'm trying to rotate my page in Landscape mode but i can't manage to make it work here is my code (some word have been modified/deleted for professional secret but it remain understandable. Thanks in advance
public static void CreateDocument(String to)
{
System.Collections.Generic.List<Produit> listPro = new System.Collections.Generic.List<Produit>(MainWindow.produits);
//listPro = ;
// Create a new PDF document
PdfSharp.Pdf.PdfDocument document = new PdfSharp.Pdf.PdfDocument();
document.Info.Title = "Bon de livraison n°"+MainWindow.numOrder;
int numpage = 1;
decimal maxPerPage = 25.00M;
Decimal numberPage = listPro.Count / maxPerPage;
Console.WriteLine("nbr : "+ listPro.Count+ "/ 25 = "+ numberPage);
numberPage = Math.Ceiling(numberPage);
String watermark = "NE PAS DIFFUSER";
while (1 == 1)
{
// Create an empty page
PdfSharp.Pdf.PdfPage page = document.AddPage();
page.Orientation = PageOrientation.Landscape;
page.Rotate = (page.Rotate - 90) % 360;
// Get an XGraphics object for drawing watermark
var gfx2 = XGraphics.FromPdfPage(page, XGraphicsPdfPageOptions.Prepend);
XFont fontWater = new XFont("Verdana", 40, XFontStyle.Bold);
XSize size = gfx2.MeasureString(watermark, fontWater);
// Define a rotation transformation at the center of the page
gfx2.TranslateTransform(page.Width / 2, page.Height / 2);
gfx2.RotateTransform(-Math.Atan(page.Height / page.Width) * 180 / Math.PI);
gfx2.TranslateTransform(-page.Width / 2, -page.Height / 2);
// Create a string format
XStringFormat format = new XStringFormat();
format.Alignment = XStringAlignment.Near;
format.LineAlignment = XLineAlignment.Near;
// Create a dimmed red brush
XBrush brush = new XSolidBrush(XColor.FromArgb(128, 255, 0, 0));
// Draw the string
gfx2.DrawString(watermark, fontWater, brush,
new XPoint((page.Width - size.Width) / 2, (page.Height - size.Height) / 2),
format);
gfx2.Dispose();
// Get an XGraphics object for drawing the order
XGraphics gfx = XGraphics.FromPdfPage(page);
/*gfx.TranslateTransform(page.Width / 2, page.Height / 2);
gfx.RotateTransform(-Math.Atan(page.Height / page.Width) *180 / Math.PI);
gfx.TranslateTransform(-page.Width / 2, -page.Height / 2);*/
// Create a font
XFont font = new XFont("Verdana", 11, XFontStyle.Bold);
XFont fontRegular = new XFont("Verdana", 8, XFontStyle.Regular);
XFont fontMedium = new XFont("Verdana", 7, XFontStyle.Regular);
XFont fontLittle = new XFont("Verdana", 6, XFontStyle.Regular);
XFont fontRegularBold = new XFont("Verdana", 8, XFontStyle.Bold);
// Draw the text
gfx.DrawString("Bon de livraison", font, XBrushes.Black,
new XRect(0, 0, page.Width, 100),
XStringFormats.Center);
gfx.DrawString(to, font, XBrushes.Black,
new XRect(0, 0, page.Width, 130),
XStringFormats.Center);
gfx.DrawString("Produit à usage non thérapeutique", fontRegular, XBrushes.Black,
new XRect(0, 0, page.Width, 160),
XStringFormats.Center);
int x, y;
x = 40;
y = 80;
if (numpage == 1)
{
// gfx.DrawString(to, font, XBrushes.Black, page.Width, 100);
gfx.DrawString("Producteur : ", fontRegular, XBrushes.Black, x - 20, y - 50);
gfx.DrawString("", fontRegular, XBrushes.Black, x - 10, y - 40);
gfx.DrawString(" ", fontRegular, XBrushes.Black, x - 10, y - 30);
gfx.DrawString("", fontRegular, XBrushes.Black, x - 10, y - 20);
gfx.DrawString("N°BL", fontRegular, XBrushes.Black, x, y);
gfx.DrawLine(XPens.Black, x + 110, y - 10, x + 170, y - 10);
gfx.DrawLine(XPens.Black, x + 110, y + 4, x + 170, y + 4);
gfx.DrawLine(XPens.Black, x + 110, y - 10, x + 110, y + 4);
gfx.DrawLine(XPens.Black, x + 170, y - 10, x + 170, y + 4);
gfx.DrawString(MainWindow.numOrder.ToString(), fontRegular, XBrushes.Black, x + 113, y);
x = 700;
gfx.DrawString("to : ", fontRegular, XBrushes.Black, x - 30, y - 50);
gfx.DrawString("", fontRegular, XBrushes.Black, x - 20, y - 40);
gfx.DrawString("", fontRegular, XBrushes.Black, x - 20, y - 30);
gfx.DrawString("", fontRegular, XBrushes.Black, x - 20, y - 20);
gfx.DrawString("Technicien", fontRegular, XBrushes.Black, x - 20, y);
gfx.DrawLine(XPens.Black, x + 60, y - 10, x + 120, y - 10);
gfx.DrawLine(XPens.Black, x + 60, y + 4, x + 120, y + 4);
gfx.DrawLine(XPens.Black, x + 60, y - 10, x + 60, y + 4);
gfx.DrawLine(XPens.Black, x + 120, y - 10, x + 120, y + 4);
gfx.DrawString(MainWindow.intervenant, fontRegular, XBrushes.Black, x + 63, y);
x = 40;
y = y + 20;
gfx.DrawString("Date d'envoi des Produits", fontRegular, XBrushes.Black, x, y);
gfx.DrawLine(XPens.Black, x + 110, y - 10, x + 170, y - 10);
gfx.DrawLine(XPens.Black, x + 110, y + 4, x + 170, y + 4);
gfx.DrawLine(XPens.Black, x + 110, y - 10, x + 110, y + 4);
gfx.DrawLine(XPens.Black, x + 170, y - 10, x + 170, y + 4);
gfx.DrawString("10/03/2020", fontRegular, XBrushes.Black, x + 113, y);
x = 700;
gfx.DrawString("Nombre de produit", fontRegular, XBrushes.Black, x - 20, y);
gfx.DrawLine(XPens.Black, x + 60, y - 10, x + 120, y - 10);
gfx.DrawLine(XPens.Black, x + 60, y + 4, x + 120, y + 4);
gfx.DrawLine(XPens.Black, x + 60, y - 10, x + 60, y + 4);
gfx.DrawLine(XPens.Black, x + 120, y - 10, x + 120, y + 4);
gfx.DrawString(listPro.Count + "", fontRegular, XBrushes.Black, x + 63, y);
x = 40;
y = y + 20;
gfx.DrawString("Date d'envoi du BL", fontRegular, XBrushes.Black, x, y);
gfx.DrawLine(XPens.Black, x + 110, y - 10, x + 170, y - 10);
gfx.DrawLine(XPens.Black, x + 110, y + 4, x + 170, y + 4);
gfx.DrawLine(XPens.Black, x + 110, y - 10, x + 110, y + 4);
gfx.DrawLine(XPens.Black, x + 170, y - 10, x + 170, y + 4);
gfx.DrawString("10/03/2020", fontRegular, XBrushes.Black, x + 113, y);
}
else
{
y = 100;
}
x = 50;
y += 20;
int ydebut = y;
int xdebut = x;
if (to == "Yes")
{
gfx.DrawString("", fontRegular, XBrushes.Black, x -= 38, y + 12);
gfx.DrawString("Type", fontRegular, XBrushes.Black, x += 60, y + 12);
gfx.DrawString("N°Lymphobank", fontRegular, XBrushes.Black, x += 30, y + 12);
gfx.DrawString("Volume",fontRegular, XBrushes.Black, x+=40,y+12);
/*gfx.DrawString("IH et groupe sanguin", fontRegular, XBrushes.Black, x += 80, y + 12);
gfx.DrawString("Age", fontRegular, XBrushes.Black, x += 90, y + 12);
gfx.DrawString("Sexe", fontLittle, XBrushes.Black, x += 20, y + 12);
gfx.DrawString("Résultats Qualification Biologique du Don", fontRegular, XBrushes.Black, x += 20, y + 12);
gfx.DrawString("Blocage", fontLittle, XBrushes.Black, x += 370, y + 12);
gfx.DrawString("NbrDon", fontLittle, XBrushes.Black, x += 30, y + 12);
gfx.DrawString("Donneur Connu", fontRegular, XBrushes.Black, x += 30, y + 12);
*/// gfx.DrawLine(XPens.Black, xdebut - 40, y, x, y);
}
if (to != "YES")
{
gfx.DrawString("Numéro Lymphobank", fontMedium, XBrushes.Black, x += 3, y + 12);
gfx.DrawString("Volume (ml)", fontMedium, XBrushes.Black, x += 90, y + 12);
gfx.DrawString("IH et groupe sanguin", fontMedium, XBrushes.Black, x += 53, y + 12);
gfx.DrawString("Age", fontMedium, XBrushes.Black, x += 90, y + 12);
gfx.DrawString("Sexe", fontMedium, XBrushes.Black, x += 20, y + 12);
gfx.DrawString("Résultats Qualification Biologique du Don", fontMedium, XBrushes.Black, x += 25, y + 12);
gfx.DrawString("Blocage", fontMedium, XBrushes.Black, x += 370, y + 12);
gfx.DrawString("Nbr Don", fontMedium, XBrushes.Black, x += 40, y + 12);
gfx.DrawString("Donneur Connu", fontMedium, XBrushes.Black, x += 40, y + 12);
}
int Nproduit = 0;
foreach (Produit pro in listPro)
{
Nproduit++;
y += 15;
x = xdebut;
// NumeroYES = prod.GetYES()
//NumeroTypeProduit = prod.GetNumTypeYESProduit()
// Sexe = "" + prod.GetSexe() + "",
//DateNaissance = "" + prod.GetDateNaissance() + "",
if (to == "YES")
{
//gfx.DrawLine(XPens.Black, x -= 40, y + 3, xdebut, y + 3);
gfx.DrawString(pro.GetYES(), fontRegular, XBrushes.Black, x += 3, y + 12);
gfx.DrawString(pro.GetNumTypeYESProduit(), fontRegular, XBrushes.Black, x += 60, y + 12);
gfx.DrawString(pro.ToString(), fontRegular, XBrushes.Black, x += 30, y + 12);
gfx.DrawString(pro.GetVolume(), fontRegular, XBrushes.Black, x += 30, y + 12);
/* gfx.DrawString(pro.GetGroupeSimple(pro.GetGroupeProduit()) + pro.GetGroupeNonElargie(pro.GetGroupeProduit()), fontRegular, XBrushes.Black, x += 80, y + 12);
gfx.DrawString(pro.GetDateNaissance(), fontRegular, XBrushes.Black, x += 90, y + 12);
gfx.DrawString("" + pro.GetSexe() + "", fontRegular, XBrushes.Black, x += 20, y + 12);
gfx.DrawString(pro.GetResultatQBDTrans(), fontRegular, XBrushes.Black, x += 20, y + 12);
gfx.DrawString(pro.GetBlocage(), fontRegular, XBrushes.Black, x += 370, y + 12);
gfx.DrawString(pro.GetNombreDon(), fontRegular, XBrushes.Black, x += 30, y + 12);
gfx.DrawString(pro.GetDonneurConnu(), fontRegular, XBrushes.Black, x += 30, y + 12);
gfx.DrawLine(XPens.Black, xdebut, y + 3, x += 80 - 3, y + 3);*/
}
else
{
gfx.DrawString(pro.ToString(), fontMedium, XBrushes.Black, x += 3, y + 12);
gfx.DrawString(pro.GetVolume(), fontMedium, XBrushes.Black, x += 90, y + 12);
gfx.DrawString(pro.GetGroupeSimple(pro.GetGroupeProduit()) + pro.GetGroupeNonElargie(pro.GetGroupeProduit()), fontMedium, XBrushes.Black, x += 53, y + 12);
gfx.DrawString(pro.GetDateNaissance(), fontMedium, XBrushes.Black, x += 90, y + 12);
gfx.DrawString("" + pro.GetSexe() + "", fontMedium, XBrushes.Black, x += 20, y + 12);
gfx.DrawString(pro.GetResultatQBDTrans(), fontMedium, XBrushes.Black, x += 25, y + 12);
gfx.DrawString(pro.GetBlocage(), fontMedium, XBrushes.Black, x += 370, y + 12);
gfx.DrawString(pro.GetNombreDon(), fontMedium, XBrushes.Black, x += 40, y + 12);
gfx.DrawString(pro.GetDonneurConnu(), fontMedium, XBrushes.Black, x += 40, y + 12);
gfx.DrawLine(XPens.Black, xdebut, y + 3, x += 90 - 3, y + 3);
}
if (Nproduit == 25)
{
break;
}
}
listPro.RemoveRange(0, Nproduit);
y += 15;
x = xdebut;
if (to == "YES")
{
/*gfx.DrawLine(XPens.Black, x - 40, y + 3, x, y + 3);
gfx.DrawLine(XPens.Black, x -= 40, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 60, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 30, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 80, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 90, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 20, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 20, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 370, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 30, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 30, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 80, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, xdebut, y + 3, x, y + 3);
gfx.DrawLine(XPens.Black, xdebut - 40, ydebut, x, ydebut);*/
}
else
{
/* gfx.DrawLine(XPens.Black, x, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 90, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 90, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 20, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 25, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 370, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 40, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 40, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, x += 90, ydebut, x, y + 3);
gfx.DrawLine(XPens.Black, xdebut, y + 3, x, y + 3);
gfx.DrawLine(XPens.Black, xdebut, ydebut, x, ydebut);
*/
}
gfx.DrawString("Page "+numpage + "/" + numberPage, fontRegular, XBrushes.Black, 750, 580);
if (listPro.Count > 0)
{
Console.WriteLine("Nombre "+listPro.Count);
numpage++;
}
else
{
break;
}
}
// Save the document...
string filename = "BonDeLivraison_" + to+".pdf";
try
{
document.Save(filename);
Console.WriteLine("Fichier sauvegarder : "+filename);
//OUverture du document pur debug a enelever (mettre en commentaire)
//Process.Start(filename);
//decommenter pour que ca imprime automatiquement
RawPrinterHelper.SendFileToPrinter(MainWindow.imprimanteBon.getImprimanteText(),filename);
}
catch(Exception err)
{
MessageBox.Show(err+"", "Suppression du produit");
}
}

c# Drawing lines between 2 buttons

I hope you can help me and this is a big code, so I'll try to explain it short. I'm making a program that can place logic gates and that can connect to each other, I'm using the OnPaint(PaintEventArgs e) method and I have troubles with connecting gates with a line. (the code is also really chaotic)
I add my gates in a List
private List<Tuple<Point, int>> droppedShapes = new List<Tuple<Point, int>>();
And my lines in
private List<Tuple<Point, Point>> allLines = new List<Tuple<Point, Point>>();
So I can save the x-y coordinates.
I use buttons to connect my lines, so on each end of connection I got a button that I can click. But I can only connect the 2 inputs of one component to each other.
Here is my code, I hope you can help me!
Here you can see how I draw my components and buttons.
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
screen.Clear(Color.Black);
Pen whitePen = new Pen(Color.White);
SolidBrush tealBrush = new SolidBrush(Color.Teal);
SolidBrush whiteBrush = new SolidBrush(Color.White);
SolidBrush yellowBrush = new SolidBrush(Color.Yellow);
SolidBrush grayBrush = new SolidBrush(Color.Gray);
SolidBrush redBrush = new SolidBrush(Color.Red);
foreach (var line in allLines)
{
screen.DrawLine(whitePen, line.Item1, line.Item2);
}
foreach (var pair in this.droppedShapes)
{
var shapeType = pair.Item2; // Reveal your own shape object here
var location = pair.Item1;
switch (shapeType) // Reveal your own shape object here
{
case 0:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("&", new Font(FontFamily.GenericMonospace, (float)18), whiteBrush, location.X - 11, location.Y - 13);
screen.DrawLine(whitePen, location.X - 20, location.Y + 6, location.X - 10, location.Y + 6);
screen.DrawLine(whitePen, location.X - 20, location.Y - 6, location.X - 10, location.Y - 6);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
newB = new Point(location.X - 25, location.Y + 2);
newB2 = new Point(location.X - 25, location.Y - 10);
newB3 = new Point(location.X + 20, location.Y - 3);
button1 = new Button();
button2 = new Button();
button3 = new Button();
button1.Size = new Size(8, 8);
button2.Size = new Size(8, 8);
button3.Size = new Size(8, 8);
newB.Offset(0, 0);
newB2.Offset(0, 0);
newB3.Offset(0, 0);
button1.Location = newB;
button2.Location = newB2;
button3.Location = newB3;
button1.Click += Button_Click1;
button2.Click += Button_Click2;
button3.Click += Button_Click3;
drawPanel.Controls.Add(button1);
drawPanel.Controls.Add(button2);
drawPanel.Controls.Add(button3);
if (jaOfNee == true)
{
screen.DrawString(pair.Item1.ToString(), new Font(FontFamily.GenericMonospace, (float) 6), whiteBrush, location.X - 25, location.Y - 25);
}
break;
case 1:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("1", new Font(FontFamily.GenericMonospace, (float)10), whiteBrush, location.X, location.Y - 9);
screen.DrawString(">", new Font(FontFamily.GenericMonospace, (float)8), whiteBrush, location.X - 8, location.Y - 10);
screen.DrawLine(whitePen, location.X + 1, location.Y + 1, location.X - 5, location.Y + 1);
screen.DrawLine(whitePen, location.X - 20, location.Y + 6, location.X - 10, location.Y + 6);
screen.DrawLine(whitePen, location.X - 20, location.Y - 6, location.X - 10, location.Y - 6);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
newB = new Point(location.X - 25, location.Y + 2);
newB2 = new Point(location.X - 25, location.Y - 10);
newB3 = new Point(location.X + 20, location.Y - 3);
button1 = new Button();
button2 = new Button();
button3 = new Button();
button1.Size = new Size(8, 8);
button2.Size = new Size(8, 8);
button3.Size = new Size(8, 8);
newB.Offset(0, 0);
newB2.Offset(0, 0);
newB3.Offset(0, 0);
button1.Location = newB;
button2.Location = newB2;
button3.Location = newB3;
button1.Click += Button_Click1;
button2.Click += Button_Click2;
button3.Click += Button_Click3;
drawPanel.Controls.Add(button1);
drawPanel.Controls.Add(button2);
drawPanel.Controls.Add(button3);
if (jaOfNee == true)
{
screen.DrawString(pair.Item1.ToString(), new Font(FontFamily.GenericMonospace, (float) 6), whiteBrush, location.X - 25, location.Y - 25);
}
break;
default:
break;
}
}
for (int i = drawPanel.Left - 5; i < drawPanel.Right + 10; i += 5)
{
for (int j = drawPanel.Top - 50; j < drawPanel.Bottom - 5; j += 5)
{
screen.FillEllipse(redBrush, i, j, 2, 2); //fills screen with a grid
}
}
// base.OnPaint(e);
// draw current location
if (currentLocation != null)
{
Point p = currentLocation.Value;
screen.FillEllipse(tealBrush, p.X + 1, p.Y, -4, -4);
}
drawPanel.CreateGraphics().DrawImage(backBuffer, 0, 0); //allows you to draw
}
}
(This is how I try to connect my 2 buttons)
foreach (var line in allLines)
{
screen.DrawLine(whitePen, line.Item1, line.Item2);
}
I don't use button 3 yet because I want to connect my inputs first so don't mind button 3.
This is how I try to save my X-Y coordinates.
private Point point1;
private Point point2;
private void Button_Click1(object sender, EventArgs e)
{
Console.WriteLine("button1");
point1 = button1.Location;
}
private void Button_Click2(object sender, EventArgs e)
{
Console.WriteLine("button2");
point2 = button2.Location;
}
private void Button_Click3(object sender, EventArgs e)
{
Console.WriteLine("button3");
}
private void DrawLine_Click(object sender, EventArgs e)
{
allLines.Add(new Tuple<Point, Point>(point1, point2));
}
After I press the button DrawLine it adds the location to the list.
Sorry for the horrible code.
I hope you understand my question a little bit more, it's really hard to explain my problem.

C# remove items in List<T> with mouse click in windows form

I'm really sorry to ask, but I'm getting desperate for not finding this after a couple of houres. So I know I can't use a foreach lus with a element.Remove() and that I need to use a for lus. But I just can't find a solution because it's a little bit more complicated. I'm making a drag and drop app with logic gates and I put these gates in a List<T> namely:
private List<Tuple<Point, int>> droppedShapes = new List<Tuple<Point, int>>();
I need to remove a gate with a click on the gate when i placed it, this is the method:
private void DeleteSelectedComponent(MouseEventArgs e)
{
if (droppedShapes != null)
{
foreach (var pair in droppedShapes)
{
var location = pair.Item1;
if (Math.Abs(location.X - e.X) < 25 && Math.Abs(location.Y - e.Y) < 25) //looks at width and height of component
{
droppedShapes.Remove(pair);
this.Invalidate();
}
}
}
}
I need that var location to know what gate needs to be deleted but I can't put this code in a for lus. (don't mind the very bad code) Thanks for your attention. I’m looking forward to your reply.
Here is the rest of my code if you need extra info:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Demo3
{
public partial class MainProgram : Form
{
private Graphics screen;
private Bitmap backBuffer;
private Point? currentLocation = null;
private List<Tuple<Point, int>> droppedShapes = new List<Tuple<Point, int>>(); // Use your own Shape-interface in stead of the listbox index
private List<String> ports = new List<string>();
private HelpClass helpclass;
private bool delete = false;
public MainProgram()
{
InitializeComponent();
backBuffer = new Bitmap(drawPanel.Width, drawPanel.Height);
screen = Graphics.FromImage(backBuffer);
this.currentLocation = new Point(20, 20);
helpclass = new HelpClass();
FillBox();
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
screen.Clear(Color.Black);
Pen whitePen = new Pen(Color.White);
SolidBrush tealBrush = new SolidBrush(Color.Teal);
SolidBrush whiteBrush = new SolidBrush(Color.White);
SolidBrush grayBrush = new SolidBrush(Color.Gray);
SolidBrush redBrush = new SolidBrush(Color.Red);
foreach (var pair in this.droppedShapes)
{
var shapeType = pair.Item2; // Reveal your own shape object here
var location = pair.Item1;
switch (shapeType) // Reveal your own shape object here
{
case 0:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("&", new Font(FontFamily.GenericMonospace, (float)18), whiteBrush, location.X - 11, location.Y - 13);
screen.DrawLine(whitePen, location.X - 20, location.Y + 6, location.X - 10, location.Y + 6);
screen.DrawLine(whitePen, location.X - 20, location.Y - 6, location.X - 10, location.Y - 6);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
break;
case 1:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("1", new Font(FontFamily.GenericMonospace, (float)10), whiteBrush, location.X, location.Y - 9);
screen.DrawString(">", new Font(FontFamily.GenericMonospace, (float)8), whiteBrush, location.X - 8, location.Y - 10);
screen.DrawLine(whitePen, location.X + 1, location.Y + 1, location.X - 5, location.Y + 1);
screen.DrawLine(whitePen, location.X - 20, location.Y + 6, location.X - 10, location.Y + 6);
screen.DrawLine(whitePen, location.X - 20, location.Y - 6, location.X - 10, location.Y - 6);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
break;
case 2:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("1", new Font(FontFamily.GenericMonospace, (float)12), whiteBrush, location.X - 7, location.Y - 9);
screen.DrawLine(whitePen, location.X - 20, location.Y, location.X - 10, location.Y);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
screen.DrawLine(whitePen, location.X + 16, location.Y, location.X + 10, location.Y - 6);
break;
case 3:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("&", new Font(FontFamily.GenericMonospace, (float)18), whiteBrush, location.X - 11, location.Y - 13);
screen.DrawLine(whitePen, location.X - 20, location.Y + 6, location.X - 10, location.Y + 6);
screen.DrawLine(whitePen, location.X - 20, location.Y - 6, location.X - 10, location.Y - 6);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
screen.DrawLine(whitePen, location.X + 16, location.Y, location.X + 10, location.Y - 6);
break;
case 4:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("1", new Font(FontFamily.GenericMonospace, (float)10), whiteBrush, location.X, location.Y - 9);
screen.DrawString(">", new Font(FontFamily.GenericMonospace, (float)8), whiteBrush, location.X - 8, location.Y - 10);
screen.DrawLine(whitePen, location.X + 1, location.Y + 1, location.X - 5, location.Y + 1);
screen.DrawLine(whitePen, location.X - 20, location.Y + 6, location.X - 10, location.Y + 6);
screen.DrawLine(whitePen, location.X - 20, location.Y - 6, location.X - 10, location.Y - 6);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
screen.DrawLine(whitePen, location.X + 16, location.Y, location.X + 10, location.Y - 6);
break;
default:
break;
}
}
for (int i = drawPanel.Left - 5; i < drawPanel.Right + 10 ; i += 5)
{
for (int j = drawPanel.Top - 50 ; j < drawPanel.Bottom - 5 ; j += 5)
{
screen.FillEllipse(redBrush, i, j, 2, 2);
}
}
// draw current location
if (currentLocation != null)
{
Point p = currentLocation.Value;
screen.FillEllipse(tealBrush, p.X + 1, p.Y, -4, -4);
}
drawPanel.CreateGraphics().DrawImage(backBuffer, 0, 0); //allows you to draw
}
private void DrawPanel_MouseClick(object sender, MouseEventArgs e)
{
if (delete == false)
{
if (CheckIfCollision(e))
{
droppedShapes.Add(new Tuple<Point, int>(new Point(helpclass.WidthSnap(e.X, drawPanel.Width), helpclass.HeightSnap(e.Y, drawPanel.Height)), (int)ComponentList.SelectedIndex));
this.Invalidate();
}
}
else
{
DeleteSelectedComponent(e);
}
}
private void drawPanel_MouseMove(object sender, MouseEventArgs e)
{
this.currentLocation = new Point(e.X, e.Y);
this.Invalidate();
}
private void drawPanel_MouseLeave(object sender, EventArgs e)
{
this.currentLocation = null;
this.Invalidate();
}
private void FillBox()
{
AddComponent();
foreach (string component in ports)
{
ComponentList.Items.Add(component);
}
}
private void AddComponent()
{
ports.Add("AND - Port");
ports.Add("OR - Port");
ports.Add("NOT - Port");
ports.Add("NAND - Port");
ports.Add("NOR - Port");
}
private bool CheckIfCollision(MouseEventArgs e) //checks if position is already taken
{
String message = "";
foreach (var pair in this.droppedShapes)
{
var location = pair.Item1;
if (Math.Abs(location.X - e.X) < 25 && Math.Abs(location.Y - e.Y) < 25) //looks at width and height of component
{
message += "Position is already taken!";
MessageBox.Show(message);
return false;
}
}
return true;
}
private void deleteButton_CheckedChanged(object sender, EventArgs e)
{
if (deleteButton.Checked)
{
delete = true;
//Console.WriteLine("true");
}
else
{
delete = false;
//Console.WriteLine("false");
}
}
private void DeleteSelectedComponent(MouseEventArgs e)
{
if (droppedShapes != null)
{
foreach (var pair in droppedShapes)
{
var location = pair.Item1;
if (Math.Abs(location.X - e.X) < 25 && Math.Abs(location.Y - e.Y) < 25) //looks at width and height of component
{
droppedShapes.Remove(pair);
this.Invalidate();
}
}
}
}
private void restartButton_Click(object sender, EventArgs e)
{
droppedShapes.Clear();
this.Invalidate();
}
}
}

Add the ones you need to remove to a new list:
private void DeleteSelectedComponent(MouseEventArgs e)
{
if (droppedShapes == null) //Early-exit avoids arrow code, easier to read!
return;
var removeList = new List<Tuple<Point, int>>();
foreach (var pair in droppedShapes)
{
var location = pair.Item1;
if (Math.Abs(location.X - e.X) < 25 && Math.Abs(location.Y - e.Y) < 25) //looks at width and height of component
removeList.Add(pair);
}
removeList.ForEach(o => droppedShapes.Remove(o));
this.Invalidate();
}
The issue is that you can't iterate through a list and delete them at the same time. Add them to another list and remove them outside of the for-each.

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