c#代码画图

private List<int> Conuts = new List<int>();

public List<int> Conuts1
{
get { return Conuts; }
set { Conuts = value; }
}
protected void Page_Load(object sender, EventArgs e)
{

StaffSystemDataContext dc = new StaffSystemDataContext();
var Deps = dc.PropertyMappings.Where(p => p.PropertyName.Equals("DepartmentID"));
foreach (var dep in Deps)
{
var Pros = dc.Projects.Where(p => p.DepartmentID.Equals(dep.PropertyValue));
Conuts1.Add(Pros.Count());
}
//画图初始化
Bitmap bMap = new Bitmap(500, 500);
Graphics gph = Graphics.FromImage(bMap);
gph.Clear(Color.White);
//中心点
PointF cPt = new PointF(40, 420);
//X轴三角形
PointF[] xPt = new PointF[3] { new PointF(cPt.Y + 15, cPt.Y), new PointF(cPt.Y, cPt.Y - 8), new PointF(cPt.Y, cPt.Y + 8) };
//Y轴三角形
PointF[] yPt = new PointF[3] { new PointF(cPt.X, cPt.X - 15), new PointF(cPt.X - 8, cPt.X), new PointF(cPt.X + 8, cPt.X) };
//图表标题
gph.DrawString("部门项目汇总图表", new Font("宋体", 14), Brushes.Black, new PointF(cPt.X + 60, cPt.X));
//画X轴
gph.DrawLine(Pens.Black, cPt.X, cPt.Y, cPt.Y, cPt.Y);
gph.DrawPolygon(Pens.Black, xPt);
gph.FillPolygon(new SolidBrush(Color.Black), xPt);
gph.DrawString("部门", new Font("宋体", 12), Brushes.Black, new PointF(cPt.Y + 10, cPt.Y + 10));
//画Y轴
gph.DrawLine(Pens.Black, cPt.X, cPt.Y, cPt.X, cPt.X);
gph.DrawPolygon(Pens.Black, yPt);
gph.FillPolygon(new SolidBrush(Color.Black), yPt);
gph.DrawString("项目数", new Font("宋体", 12), Brushes.Black, new PointF(0, 7));
//画Y轴刻度
for (int i = 1; i <= 10; i++)
{
gph.DrawString(i.ToString(), new Font("宋体", 11), Brushes.Black, new PointF(cPt.X - 30, cPt.Y - i * 30 - 6));
gph.DrawLine(Pens.Black, cPt.X - 3, cPt.Y - i * 30, cPt.X, cPt.Y - i * 30);
}
//画X轴项目
int a = 1;
foreach (var dep in Deps)
{

gph.DrawString(dep.PropertyMeaning.Substring(0, 1), new Font("宋体", 11), Brushes.Black, new PointF(cPt.X + a * 30 - 5, cPt.Y + 5));
gph.DrawString(dep.PropertyMeaning.Substring(1, 1), new Font("宋体", 11), Brushes.Black, new PointF(cPt.X + a * 30 - 5, cPt.Y + 20));
gph.DrawString(dep.PropertyMeaning.Substring(2, 1), new Font("宋体", 11), Brushes.Black, new PointF(cPt.X + a * 30 - 5, cPt.Y + 35));
a++;
}
for (int i = 1; i <= Deps.Count(); i++)
{
//画点
gph.DrawEllipse(Pens.Black, cPt.X + i * 30 - 1.5F, cPt.Y - Conuts1[i - 1] * 30 - 1.5F, 3, 3);
gph.FillEllipse(new SolidBrush(Color.Black), cPt.X + i * 30 - 1.5F, cPt.Y - Conuts1[i - 1] * 30 - 1.5F, 3, 3);
//画数值
gph.DrawString(Conuts1[i - 1].ToString(), new Font("宋体", 11), Brushes.Black, new PointF(cPt.X + i * 30, cPt.Y - Conuts1[i - 1] * 30));
//画折线
if (i > 1)
gph.DrawLine(Pens.Red, cPt.X + (i - 1) * 30, cPt.Y - Conuts1[i - 2] * 30, cPt.X + i * 30, cPt.Y - Conuts1[i - 1] * 30);
}
System.IO.MemoryStream ms = new System.IO.MemoryStream();
bMap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
Response.ClearContent();
Response.ContentType = "image/Png";
Response.BinaryWrite(ms.ToArray());
gph.Dispose();
bMap.Dispose();
Response.End();
}

StaffSystemDataContext dc = new StaffSystemDataContext();
var Deps = dc.PropertyMappings.Where(p => p.PropertyName.Equals("DepartmentID"));

//创建画图对象
int width = 800, height = 800;
Bitmap bitmap = new Bitmap(width, height);
Graphics g = Graphics.FromImage(bitmap);
try
{
//清空背景色
g.Clear(Color.White);
Pen pen1 = new Pen(Color.Red);

Brush brush1 = new SolidBrush(Color.PowderBlue);
Brush brush2 = new SolidBrush(Color.Blue);
Brush brush3 = new SolidBrush(Color.Wheat);
Brush brush4 = new SolidBrush(Color.Orange);
Brush brush5 = new SolidBrush(Color.Gray);
Brush brush6 = new SolidBrush(Color.Red);
Brush brush7 = new SolidBrush(Color.White);
Brush[] brs = new Brush[] { brush1, brush2, brush3, brush4, brush5, brush6 };
Font font1 = new Font("Courier New", 16, FontStyle.Bold);
Font font2 = new Font("Courier New", 8);
g.FillRectangle(brush7, 0, 0, width, height);    //绘制背景图
g.DrawString("员工部门比例饼形图", font1, brush2, new Point(80, 20));  //书写标题
int piex = 100, piey = 60, piew = 200, pieh = 200, sum = 0;
var Pros = dc.Projects.Where(p => p.DepartmentID != null);
sum = Pros.Count();
int a = 0;
float j = 0;
foreach (var dep in Deps)
{
var Prods = dc.Projects.Where(p => p.DepartmentID.Equals(dep.PropertyValue));
//计算角度
float angle = Convert.ToSingle((360 / Convert.ToSingle(sum)) * Convert.ToSingle(Prods.Count()));
//绘制员工所占比例
//FieldInfo fi = type.GetField("ddd" + i.ToString());
//temp += fi.GetValue(this).ToString();
//Type type = this.GetType();
//Brush fi = (Brush)type.GetField("brush" + a.ToString());
g.FillPie(brs[a], piex, piey, piew, pieh, j, angle);
a++;
j = j + angle;
}

//绘制标识
g.DrawRectangle(pen1, 50, 280, 400, 300);  //绘制范围框
//绘制小矩形
int le = 320, b = 0;
foreach (var dep in Deps)
{
var Prods = dc.Projects.Where(p => p.DepartmentID.Equals(dep.PropertyValue));
g.FillRectangle(brs[b], 90, le, 20, 10);
g.DrawString("" + dep.PropertyMeaning + "员工占公司总人数比例:" + Convert.ToSingle(Prods.Count()) * 100 / Convert.ToSingle(sum) + "%", font2, brs[b], 120, le);
le += 40;
b++;
}
}
catch (Exception ex)
{
throw new Exception("有错！！！");
}
System.IO.MemoryStream ms = new System.IO.MemoryStream();
bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
Response.ClearContent();
Response.ContentType = "image/Png";
Response.BinaryWrite(ms.ToArray());
g.Dispose();
bitmap.Dispose();
Response.End();