C#: Paint own Bar Chart

Question

I\'m trying to paint a simple bar chart via C# but I\'ve never experimented with the Graphics and Drawing namespaces. I thought of generating a \"start\" and \"

Answer 1

Based on reply from Paul Sasik, I've created a bit different simple bar-chart. I hope this might help others.

void DrawTheBar(int[] Values, Panel p)
    {                       
        //configuration of the bar chart
        int barWidth = 20; //Width of the bar
        int barSpace = 5; //Space between each bars.
        int BCS = 5; //Background cell size
        float fontSize = 8;
        string fontFamily = "Arial";        

        Color bgColor = Color.White;
        Brush fillColor = Brushes.CadetBlue;
        Color borderColor = Color.Black;
        Color bgCellColor = Color.Silver;
        Brush textColor = Brushes.Black;

        //do some magic here...
        p.BackColor = bgColor; //set the bg color on panel
        Graphics g = p.CreateGraphics();
        g.Clear(bgColor); //cleans up the previously draw pixels
        int Xpos = barSpace; //initial position
        int panelHeight = panel1.Height-1; //fix panel height for drawing border 

        //Drawing rectangles for background.
        for(int c = 0; c < Convert.ToInt16(panel1.Width / BCS); c++)
        {
            for(int r = 0; r < Convert.ToInt16(panel1.Height / BCS); r++)
            {
                g.DrawRectangle(new Pen(bgCellColor), c * BCS, r * BCS, BCS, BCS);
            }
        }

        //Drawing the bars
        for(int i = 0; i < Values.Length; i++)
        {
            //Drawing a filled rectangle. X = Xpos; Y = ((panel Height - 1) - Actual value); Width = barWidth, Height = as value define it
            g.FillRectangle(fillColor, Xpos, (panelHeight - Values[i]), barWidth, Values[i]);
            //Draw a rectangle around the previously created bar.
            g.DrawRectangle(new Pen(borderColor), Xpos, (panelHeight - Values[i]), barWidth, Values[i]);
            //Draw values over each bar.
            g.DrawString(Values[i].ToString(), new Font(fontFamily, fontSize), textColor, (Xpos + 2), (panelHeight - Values[i]) - (fontSize + barSpace));

            //calculate the next X point for the next bar.
            Xpos += (barWidth + barSpace);
        }

        //here you will be happy with the results. :)
    }