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| using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace GraphUserControl
{
public partial class GraphUC: UserControl
{
int x_margin=20;
int y_margin=20;
int x_in_margin=20;
int y_in_margin=20;
int font_size;
double y_scale=1;
int n_datpoints;// =4;
Color primaryLineColor = Color.DeepSkyBlue;
Color alternateLineColor = Color.Red;
Color baselineColor = Color.Black;
Color borderlineColor = Color.Black;
Color primaryFillColor = Color.DeepSkyBlue;
Color alternateFillColor = Color.Red;
Color primaryValueColor = Color.Blue;
Color alternateValueColor = Color.Red;
//Databinding-Start
public DataTable dataSource;
public string dataMember_Y;
public string dataMember_X;
//Databinding-End
public int Xmargin
{
get { return this.x_margin; }
set { this.x_margin = value; }
}
public int Ymargin
{
get { return this.y_margin; }
set { this.y_margin = value; }
}
public int Xinmargin
{
get { return this.x_in_margin; }
set { this.x_in_margin = value; }
}
public int Yinmargin
{
get { return this.y_in_margin; }
set { this.y_in_margin = value; }
}
public Color PrimaryLineColor
{
get { return this.primaryLineColor; }
set { this.primaryLineColor = value; }
}
public Color AlternateLineColor
{
get { return this.alternateLineColor; }
set { this.alternateLineColor = value; }
}
public Color BaselineColor
{
get { return this.baselineColor; }
set { this.baselineColor = value; }
}
public Color BorderlineColor
{
get { return this.borderlineColor; }
set { this.borderlineColor = value; }
}
public Color PrimaryFillColor
{
get { return this.primaryFillColor; }
set { this.primaryFillColor = value; }
}
public Color AlternateFillColor
{
get { return this.alternateFillColor; }
set { this.alternateFillColor = value; }
}
public Color PrimaryValueColor
{
get { return this.primaryValueColor; }
set { this.primaryValueColor = value; }
}
public Color AlternateValueColor
{
get { return this.alternateValueColor; }
set { this.alternateValueColor = value; }
}
//Data Binding - Start
[TypeConverter("System.Windows.Forms.Design.DataSourceConverter, System.Design")]
[Category("Data")]
[DefaultValue(null)]
public DataTable DataSource
{
get
{
return this.dataSource;
}
set
{
if (this.dataSource != value)
{
this.dataSource = value;
}
}
}
[Category("Data")]
[Editor("System.Windows.Forms.Design.DataMemberListEditor,System.Design", "System.Drawing.Design.UITypeEditor, System.Drawing")]
[DefaultValue("")]
public string DataMemberY
{
get
{
return this.dataMember_Y;
}
set
{
if (this.dataMember_Y != value)
{
this.dataMember_Y = value;
}
}
}
[Category("Data")]
[Editor("System.Windows.Forms.Design.DataMemberListEditor,System.Design", "System.Drawing.Design.UITypeEditor, System.Drawing")]
[DefaultValue("")]
public string DataMemberX
{
get
{
return this.dataMember_X;
}
set
{
if (this.dataMember_X != value)
{
this.dataMember_X = value;
}
}
}
//Data Binding - End
public GraphUC()
{
InitializeComponent();
}
private void DrawBarChart(Graphics gr)
{
try
{
// Create a new pen.
Pen PrimaryColorPen = new Pen(primaryLineColor);
Pen AlternateColorPen = new Pen(alternateLineColor);
Pen BaseLinePen = new Pen(baselineColor);
Pen BorderLinePen = new Pen(borderlineColor);
// Create new Solid Brush
SolidBrush PrimarysolidBrush = new SolidBrush(primaryFillColor);
SolidBrush AlternatesolidBrush = new SolidBrush(alternateFillColor);
SolidBrush PrimaryValueBrush = new SolidBrush(primaryValueColor);
SolidBrush AlternateValueBrush = new SolidBrush(alternateValueColor);
if (dataSource.Rows.Count != 0)
{
n_datpoints = dataSource.Rows.Count;
}
// label1.Text = Convert.ToString(n_datpoints);
float fbar_space = (float)(this.Width - 2 * (x_margin + x_in_margin)) / (2 * n_datpoints);
int bar_space = (int)Math.Round(fbar_space);
int bar_width = (int)Math.Floor(fbar_space);
font_size = (int)this.Font.Size;
//Calculate the scale
// y_scale = (this.Height - 2 * (y_margin + y_in_margin)) / double.Parse(listBox1.Compute("MAX(" + dataMember_Y + ")", "").ToString());
//Draw border
gr.DrawRectangle(BorderLinePen,
new Rectangle(x_margin, y_margin, this.Width - 2 * x_margin, this.Height - 2 * y_margin));
for (int i = 0; i < n_datpoints; i++)
{
if (i % 2 == 0)
{
gr.DrawRectangle(PrimaryColorPen,
new Rectangle(x_margin + x_in_margin + (i + 1) * bar_width + i * bar_space, this.Height - y_margin - y_in_margin - (int)(Convert.ToInt32(dataSource.Rows[i][dataMember_Y].ToString()) * y_scale), bar_width, (int)(Convert.ToInt32(dataSource.Rows[i][dataMember_Y].ToString()) * y_scale)));
gr.FillRectangle(PrimarysolidBrush, x_margin + x_in_margin + (i + 1) * bar_width + i * bar_space, this.Height - y_margin - y_in_margin - (int)(Convert.ToInt32(dataSource.Rows[i][dataMember_Y].ToString()) * y_scale), bar_width, (int)(Convert.ToInt32(dataSource.Rows[i][dataMember_Y].ToString()) * y_scale));
using (Font font = new Font(this.Font.Name, font_size, this.Font.Style, this.Font.Unit))
{
Point point1 = new Point(x_margin + x_in_margin + (i + 1) * bar_width + i * bar_space - 3, this.Height - y_margin - y_in_margin - (int)(Convert.ToInt32(dataSource.Rows[i][dataMember_Y].ToString()) * y_scale) - (int)font.Size - 5);
Point point2 = new Point(x_margin + x_in_margin + (i + 1) * bar_width + i * bar_space - 3, this.Height - y_margin - y_in_margin);
gr.DrawString(Convert.ToInt32(dataSource.Rows[i][dataMember_Y].ToString()).ToString(), font, PrimaryValueBrush, point1);
gr.DrawString(dataSource.Rows[i][dataMember_X].ToString().Substring(0, (bar_width / font_size) + 1), font, PrimaryValueBrush, point2);
}
}
else
{
gr.DrawRectangle(AlternateColorPen,
new Rectangle(x_margin + x_in_margin + (i + 1) * bar_width + i * bar_space, this.Height - y_margin - y_in_margin - (int)(Convert.ToInt32(dataSource.Rows[i][dataMember_Y].ToString()) * y_scale), bar_width, (int)(Convert.ToInt32(dataSource.Rows[i][dataMember_Y].ToString()) * y_scale)));
gr.FillRectangle(AlternatesolidBrush, x_margin + x_in_margin + (i + 1) * bar_width + i * bar_space, this.Height - y_margin - y_in_margin - (int)(Convert.ToInt32(dataSource.Rows[i][dataMember_Y].ToString()) * y_scale), bar_width, (int)(Convert.ToInt32(dataSource.Rows[i][dataMember_Y].ToString()) * y_scale));
using (Font font = new Font(this.Font.Name, font_size, this.Font.Style, this.Font.Unit))
{
Point point1 = new Point(x_margin + x_in_margin + (i + 1) * bar_width + i * bar_space - 3, this.Height - y_margin - y_in_margin - (int)(Convert.ToInt32(dataSource.Rows[i][dataMember_Y].ToString()) * y_scale) - (int)font.Size - 5);
Point point2 = new Point(x_margin + x_in_margin + (i + 1) * bar_width + i * bar_space - 3, this.Height - y_margin - y_in_margin);
gr.DrawString(Convert.ToInt32(dataSource.Rows[i][dataMember_Y].ToString()).ToString(), font, AlternateValueBrush, point1);
gr.DrawString(dataSource.Rows[i][dataMember_X].ToString().Substring(0, (bar_width / font_size) + 1), font, AlternateValueBrush, point2);
}
}
}
// Draw Baseline below bars
gr.DrawLine(BaseLinePen, x_margin + x_in_margin, this.Height - y_margin - y_in_margin, this.Width - x_margin - x_in_margin, this.Height - y_margin - y_in_margin);
// Draw Vertical Line
gr.DrawLine(BaseLinePen, x_margin + x_in_margin, this.Height - y_margin - y_in_margin, x_margin + x_in_margin, y_margin + y_in_margin);
//Dispose of Pens and Brushes.
PrimaryColorPen.Dispose();
AlternateColorPen.Dispose();
BaseLinePen.Dispose();
BorderLinePen.Dispose();
PrimarysolidBrush.Dispose();
AlternatesolidBrush.Dispose();
PrimaryValueBrush.Dispose();
AlternateValueBrush.Dispose();
}
catch (Exception ex)
{
string str = ex.Message;
}
}
private void GraphUC_Load(object sender, EventArgs e)
{
DrawBarChart(pictureBox1.CreateGraphics());
}
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
DrawBarChart(e.Graphics);
}
private void button1_Click(object sender, EventArgs e)
{
// Redraw.
using (Graphics gr = pictureBox1.CreateGraphics())
{
DrawBarChart(gr);
}
}
}
} |
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