C # Implementation pie chart and bar chart

Pie chart

Using System;
Using System.Collections;
Using System.ComponentModel;
Using System.Data;
Using System.Drawing;
Using System.Web;
Using System.Web.SessionState;
Using System.Web.UI;
Using System.Web.UI.WebControls;
Using System.Web.UI.HtmlControls;

Namespace Xcrm. Module.report
{
<summary>
Summary description of the draw.
</summary>
public class Draw:System.Web.UI.Page
{
private void Page_Load (object sender, System.EventArgs e)
{
Place user code here to initialize page
Draw_imgbar ();
}
Draw a bar chart
void Draw_imgbar () {
Create a bitmap instance with a length of 400 and a broadband of 400
Bitmap bmp = new Bitmap (400,300);
Graphics G;
g = Graphics.fromimage (BMP);
G.clear (Color.snow);
String[] Sitem = {"Very good", "good", "General", "poor"};
int[] num = {1000,69,90,2000};
int cnt,i,len,ibarwidth;
float scale;
Float[] Nflt;
string header;
Header = "";
CNT = 0;
Ibarwidth = 40;
scale = 1;
len = num. Length;
Nflt. Length = Len;
Nflt = new Float[len];
for (i=0;i<len;i++)
{
CNT + + num[i];
}
Flt = Cnt/len;
for (i=0;i<len;i++)
{
Nflt[i] = * NUM[I]/CNT;
Nflt[i] = scale * NUM[I]/CNT;
}

Header = "Survey of statistical results at a glance";
g.DrawString (header, New Font ("Song Body", 12,fontstyle.bold), Brushes.black, New Point (75, 10));
Point Myrec = new Point (300, 40);
Point mydec = new Point (320, 40);

for (i=0;i<len;i++)
{
G.drawrectangle (Pens.black, myrec.x, Myrec.y, 20, 10);
Draw Small Squares
G.fillrectangle (New SolidBrush (Return_color (i)), myrec.x, Myrec.y, 20, 10);
Fill Small Squares
g.DrawString ("" + sitem[i], new Font ("Song Body", 9), Brushes.black, MyDec);
Draw the text on the right side of the small square
Myrec.y + 15;
Mydec.y + 15;

G. DrawRectangle (Pens.black, (i * ibarwidth) +, 290-(nflt[i] * scale), (nflt[i] * scale) + 5);
Draw bar Graph
G. FillRectangle (New SolidBrush (Return_color (i)), (i * ibarwidth) +, 290-(nflt[i] * scale), (nflt[ I] * scale) + 5);
Fills the bar graph with the specified color
G. DrawString (num[i). ToString (), New Font ("Arial", 9), Brushes.black, (i * ibarwidth) +, 275-(nflt[i] * scale));
Show data represented by bar graph

s = s + nflt[i];
}
Pen p = new Pen (color.black, 1);
G. DrawRectangle (P, 1, 1, 398, 298);
Bmp. Save (Response.outputstream, System.Drawing.Imaging.ImageFormat.Jpeg);
Bmp. Dispose ();
}

Gao Map
void Draw_img () {
Bitmap bmp = new Bitmap (400,300);
Create a bitmap instance with a length of 400 and a broadband of 400
Graphics G;
g = Graphics.fromimage (BMP);
G.clear (Color.snow);
String[] Sitem = {"Very good", "good", "General", "poor"};
int[] num = {1000,69,90,20};
int Cnt,i,len;
float S;
Float[] Nflt;
string header;
Header = "";
CNT = 0;
s = 0;
len = num. Length;
Nflt. Length = Len;
Nflt = new Float[len];
for (i=0;i<len;i++) {
CNT + + num[i];
}
Flt = Cnt/len;
for (i=0;i<len;i++) {

Nflt[i] = 360 * NUM[I]/CNT;
}

Header = "Survey of statistical results at a glance";
g.DrawString (header, New Font ("Song Body", 12,fontstyle.bold), Brushes.black, New Point (75, 10));
g.DrawString ("Unit: Times", New Font ("Song Body", 9), brushes. Black, new Point (300, 25));

Point Myrec = new Point (300, 40);
Point mydec = new Point (320, 40);

for (i=0;i<len;i++)
{
if (i==len-1) {
s = 360-s;
Nflt[i] = 360-s;
}

G.drawrectangle (Pens.black, myrec.x, Myrec.y, 20, 10);
Draw Small Squares
G.fillrectangle (New SolidBrush (Return_color (i)), myrec.x, Myrec.y, 20, 10);
Fill Small Squares
g.DrawString ("" + Sitem[i] + "" + num[i], new Font ("Song Body", 9), Brushes.black, MyDec);
Draw the text on the right side of the small square
Myrec.y + 15;
Mydec.y + 15;

G.fillpie (New SolidBrush (Return_color (i)), M, S, Nflt[i]);
G.drawpie (Pens.black, M, S, Nflt[i]);
s = s + nflt[i];
}
Pen p = new Pen (color.black, 1);
G. DrawRectangle (P, 1, 1, 398, 298);
Bmp. Save (Response.outputstream, System.Drawing.Imaging.ImageFormat.Jpeg);
}
Public Color return_color (int i) {
switch (i) {
Case 0:
return color.red;
Break
Case 1:
return color.blue;
Break
Case 2:
return color.yellow;
Case 3:
return color.green;
Break
Case 4:
return color.pink;
Break
Case 5:
return color.plum;
Break
Case 6:
return color.gray;
Break
Case 7:
return Color.salmon;
Break
Case 8:
return color.rosybrown;
Break
Case 9:
return color.teal;
Break
Case 10:
return color.orange;
Break
Case 11:
return color.thistle;
Break
Case 12:
return color.maroon;
Break
Default
return color.whitesmoke;
Break

}
}
Code generated #region the Web forms Designer
Override protected void OnInit (EventArgs e)
{
//
CodeGen: This call is required for the ASP.net Web forms Designer.
//
InitializeComponent ();
Base. OnInit (e);
}

<summary>
Designer supports required methods-do not use the Code editor to modify
The contents of this method.
</summary>
private void InitializeComponent ()
{
This. Load + = new System.EventHandler (this. Page_Load);
}
#endregion
}
}