绘制总计图

总计图形体系不以为奇, 有柱状图, 折线图, 扇形图等等, 而总括图形的绘图方法也有为数不少, 有Flash制作的总计图形, 有水晶报表生成总结图形, 有特意制图软件制作, 也有编制程序语言本人制作的;这里大家用就C# 制作六款最特出的计算图: 柱状图, 折线图和扇形图;既然是总括, 当然必要多少, 这里演示的多寡存于Sql Server3000中, 五款总计图形都是动态生成. 当中柱状图小编会附上制作步骤, 其余五款总结图直接附源码.

 

说明: 须要分裂等, 总括图形绘制后的来得效果也不平等, 比如那里柱状图的要害要求是为了相比较每一期申请人数与通过人数的差, 由此会把两根柱子放在1块儿会使相比较结实一目领会. 之所以大家能够依据须要灵活绘制.

  

一. 柱状图的绘制.

制图步骤如下:

一. 概念绘图用到的类.

int height = 500, width = 700;
Bitmap image = new Bitmap(width, height);
Graphics g = Graphics.FromImage(image);
Pen mypen = new Pen(brush, 1);

 

贰. 绘制图框.

g.FillRectangle(Brushes.WhiteSmoke, 0, 0, width, height);

 

三. 制图横向坐标线

for (int i = 0; i < 14; i++) 
{
g.DrawLine(mypen, x, 80, x, 340);
x = x + 40;
}

 

四. 制图纵向坐标线

for (int i = 0; i < 9; i++) 
{
g.DrawLine(mypen, 60, y, 620, y);
y = y + 26;
}

 

5. 绘制横坐标值

String[] n = { "第一期", "第二期", "第三期", "第四期", "全年" };
for (int i = 0; i < 7; i++) 
{
g.DrawString(n[i].ToString(), font, Brushes.Blue, x, 348); 
x = x + 78;
}

 

陆. 绘制纵坐标值

String[] m = {"250","225", "200", "175", "150", "125", "100“};
for (int i = 0; i < 10; i++) 
{
g.DrawString(m[i].ToString(), font, Brushes.Blue, 25, y);
y = y + 26;
}

 

7. 概念数组存款和储蓄数据库中总结的数量

int[] Count1 = new int[7]; //存储从数据库读取的报名人数
int[] Count2 = new int[7]; //存储从数据库读取的通过人数

银河至尊游戏官网, 

8. 从数据库中读取报有名气的人数与通过人数

SqlConnection Con = new SqlConnection(
"Server=(Local);Database=committeeTraining;");
Con.Open();
string cmdtxt2 = "SELECT * FROM ##Count 
where Company='" + ****+ "'";
SqlDataAdapter da = new SqlDataAdapter(cmdtxt2, Con);
DataSet ds = new DataSet();
da.Fill(ds);

 

玖. 将读取的多寡存储到数组中

Count1[0] = Convert.ToInt32(ds.Tables[0].Rows[0][“count1”].ToString()); 
Count1[1] = Convert.ToInt32(ds.Tables[0].Rows[0][“count3”].ToString()); 
Count2[0] = Convert.ToInt32(ds.Tables[0].Rows[0][“count2”].ToString()); 
Count2[1] = Convert.ToInt32(ds.Tables[0].Rows[0]["count4"].ToString());

 

10.定义画笔和画刷准备绘图

x = 80; 
Font font2 = new System.Drawing.Font(
"Arial", 10, FontStyle.Bold);
SolidBrush mybrush = new SolidBrush(Color.Red);
SolidBrush mybrush2 = new SolidBrush(Color.Green);

 

1一. 依照数组中的值绘制柱状图

(1)第一期报名人数
g.FillRectangle(mybrush, x, 340 - Count1[0], 20, Count1[0]);
g.DrawString(Count1[0].ToString(), font2, 
Brushes.Red, x, 340 - Count1[0] - 15);

(2) 第一期通过人数
x = x + 20;
g.FillRectangle(mybrush2, x, 340 - Count2[0], 20, Count2[0]);
g.DrawString(Count2[0].ToString(), font2, 
Brushes.Green, x, 340 - Count2[0] - 15);

 

12. 将图片输出到页面.

System.IO.MemoryStream ms = new 
System.IO.MemoryStream();
image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
Response.ClearContent();
Response.ContentType = "image/Jpeg";
Response.BinaryWrite(ms.ToArray()); 

 

末段柱状图的功能图:

银河至尊游戏官网 1

 

柱状图的完全代码:

银河至尊游戏官网 2银河至尊游戏官网 3

private void CreateImage()
{
int height = 500, width = 700;
Bitmap image = new Bitmap(width, height);
//创建Graphics类对象
Graphics g = Graphics.FromImage(image);

try
{
//清空图片背景色
g.Clear(Color.White);

Font font = new Font("Arial", 10, FontStyle.Regular);
Font font1 = new Font("宋体", 20, FontStyle.Bold);

LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), 
Color.Blue, Color.BlueViolet, 1.2f, true);
g.FillRectangle(Brushes.WhiteSmoke, 0, 0, width, height);
// Brush brush1 = new SolidBrush(Color.Blue);

g.DrawString(this.ddlTaget.SelectedItem.Text + " " + this.ddlYear.SelectedItem.Text + 
" 成绩统计柱状图", font1, brush, new PointF(70, 30));
//画图片的边框线
g.DrawRectangle(new Pen(Color.Blue), 0, 0, image.Width - 1, image.Height - 1);


Pen mypen = new Pen(brush, 1);
//绘制线条
//绘制横向线条
int x = 100;
for (int i = 0; i < 14; i++)
{
g.DrawLine(mypen, x, 80, x, 340);
x = x + 40;
}
Pen mypen1 = new Pen(Color.Blue, 2);
x = 60;
g.DrawLine(mypen1, x, 80, x, 340);

//绘制纵向线条
int y = 106;
for (int i = 0; i < 9; i++)
{
g.DrawLine(mypen, 60, y, 620, y);
y = y + 26;
}
g.DrawLine(mypen1, 60, y, 620, y);

//x轴
String[] n = { "第一期", "第二期", "第三期", "第四期", "上半年", "下半年", "全年统计" };
x = 78;
for (int i = 0; i < 7; i++)
{
g.DrawString(n[i].ToString(), font, Brushes.Blue, x, 348); //设置文字内容及输出位置
x = x + 78;
}

//y轴
String[] m = {"250","225", "200", "175", "150", "125", "100", " 75",
" 50", " 25", " 0"};
y = 72;
for (int i = 0; i < 10; i++)
{
g.DrawString(m[i].ToString(), font, Brushes.Blue, 25, y); //设置文字内容及输出位置
y = y + 26;
}

int[] Count1 = new int[7];
int[] Count2 = new int[7];

SqlConnection Con = new SqlConnection("Server=(Local);Database=committeeTraining;Uid=sa;Pwd=**");
Con.Open();
string cmdtxt2 = "SELECT * FROM ##Count where Company='" + this.ddlTaget.SelectedItem.Text.Trim() + "'";
SqlDataAdapter da = new SqlDataAdapter(cmdtxt2, Con);
DataSet ds = new DataSet();
da.Fill(ds);

Count1[0] = Convert.ToInt32(ds.Tables[0].Rows[0]["count1"].ToString());
Count1[1] = Convert.ToInt32(ds.Tables[0].Rows[0]["count3"].ToString());
Count1[2] = Convert.ToInt32(ds.Tables[0].Rows[0]["count5"].ToString());
Count1[3] = Convert.ToInt32(ds.Tables[0].Rows[0]["count7"].ToString());

Count1[4] = Count1[0] + Count1[1];
Count1[5] = Count1[2] + Count1[3];

Count1[6] = Convert.ToInt32(ds.Tables[0].Rows[0]["count9"].ToString());


Count2[0] = Convert.ToInt32(ds.Tables[0].Rows[0]["count2"].ToString());
Count2[1] = Convert.ToInt32(ds.Tables[0].Rows[0]["count4"].ToString());
Count2[2] = Convert.ToInt32(ds.Tables[0].Rows[0]["count6"].ToString());
Count2[3] = Convert.ToInt32(ds.Tables[0].Rows[0]["count8"].ToString());

Count2[4] = Count2[0] + Count2[1];
Count2[5] = Count2[2] + Count2[3];

Count2[6] = Convert.ToInt32(ds.Tables[0].Rows[0]["count10"].ToString());

//绘制柱状图.
x = 80;
Font font2 = new System.Drawing.Font("Arial", 10, FontStyle.Bold);
SolidBrush mybrush = new SolidBrush(Color.Red);
SolidBrush mybrush2 = new SolidBrush(Color.Green);

//第一期
g.FillRectangle(mybrush, x, 340 - Count1[0], 20, Count1[0]);
g.DrawString(Count1[0].ToString(), font2, Brushes.Red, x, 340 - Count1[0] - 15);

x = x + 20;
g.FillRectangle(mybrush2, x, 340 - Count2[0], 20, Count2[0]);
g.DrawString(Count2[0].ToString(), font2, Brushes.Green, x, 340 - Count2[0] - 15);


//第二期
x = x + 60;
g.FillRectangle(mybrush, x, 340 - Count1[1], 20, Count1[1]);
g.DrawString(Count1[1].ToString(), font2, Brushes.Red, x, 340 - Count1[1] - 15);


x = x + 20;
g.FillRectangle(mybrush2, x, 340 - Count2[1], 20, Count2[1]);
g.DrawString(Count2[1].ToString(), font2, Brushes.Green, x, 340 - Count2[1] - 15);


//第三期
x = x + 60;
g.FillRectangle(mybrush, x, 340 - Count1[2], 20, Count1[2]);
g.DrawString(Count1[2].ToString(), font2, Brushes.Red, x, 340 - Count1[2] - 15);

x = x + 20;
g.FillRectangle(mybrush2, x, 340 - Count2[2], 20, Count2[2]);
g.DrawString(Count2[2].ToString(), font2, Brushes.Green, x, 340 - Count2[2] - 15);

//第四期
x = x + 60;
g.FillRectangle(mybrush, x, 340 - Count1[3], 20, Count1[3]);
g.DrawString(Count1[3].ToString(), font2, Brushes.Red, x, 340 - Count1[3] - 15);

x = x + 20;
g.FillRectangle(mybrush2, x, 340 - Count2[3], 20, Count2[3]);
g.DrawString(Count2[3].ToString(), font2, Brushes.Green, x, 340 - Count2[3] - 15);

//上半年
x = x + 60;
g.FillRectangle(mybrush, x, 340 - Count1[4], 20, Count1[4]);
g.DrawString(Count1[4].ToString(), font2, Brushes.Red, x, 340 - Count1[4] - 15);

x = x + 20;
g.FillRectangle(mybrush2, x, 340 - Count2[4], 20, Count2[4]);
g.DrawString(Count2[4].ToString(), font2, Brushes.Green, x, 340 - Count2[4] - 15);

//下半年
x = x + 60;
g.FillRectangle(mybrush, x, 340 - Count1[5], 20, Count1[5]);
g.DrawString(Count1[5].ToString(), font2, Brushes.Red, x, 340 - Count1[5] - 15);

x = x + 20;
g.FillRectangle(mybrush2, x, 340 - Count2[5], 20, Count2[5]);
g.DrawString(Count2[5].ToString(), font2, Brushes.Green, x, 340 - Count2[5] - 15);

//全年
x = x + 60;
g.FillRectangle(mybrush, x, 340 - Count1[6], 20, Count1[6]);
g.DrawString(Count1[6].ToString(), font2, Brushes.Red, x, 340 - Count1[6] - 15);


x = x + 20;
g.FillRectangle(mybrush2, x, 340 - Count2[6], 20, Count2[6]);
g.DrawString(Count2[6].ToString(), font2, Brushes.Green, x, 340 - Count2[6] - 15);


//绘制标识
Font font3 = new System.Drawing.Font("Arial", 10, FontStyle.Regular);
g.DrawRectangle(new Pen(Brushes.Blue), 170, 400, 250, 50); //绘制范围框
g.FillRectangle(Brushes.Red, 270, 410, 20, 10); //绘制小矩形
g.DrawString("报名人数", font3, Brushes.Red, 292, 408);

g.FillRectangle(Brushes.Green, 270, 430, 20, 10);
g.DrawString("通过人数", font3, Brushes.Green, 292, 428);

System.IO.MemoryStream ms = new System.IO.MemoryStream();
image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
Response.ClearContent();
Response.ContentType = "image/Jpeg";
Response.BinaryWrite(ms.ToArray());
}
finally
{
g.Dispose();
image.Dispose();
}
}

View Code

 

二. 折线总结图的绘图

效果:

 

 银河至尊游戏官网 4

 

 

折线图的共同体代码:

银河至尊游戏官网 5银河至尊游戏官网 6

private void CreateImage()
{
int height = 480, width = 700;
Bitmap image = new Bitmap(width, height);
Graphics g = Graphics.FromImage(image);

try
{
//清空图片背景色
g.Clear(Color.White);

Font font = new System.Drawing.Font("Arial", 9, FontStyle.Regular);
Font font1 = new System.Drawing.Font("宋体", 20, FontStyle.Regular);
Font font2 = new System.Drawing.Font("Arial", 8, FontStyle.Regular);
LinearGradientBrush brush = new LinearGradientBrush(
new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.Blue, 1.2f, true);
g.FillRectangle(Brushes.AliceBlue, 0, 0, width, height);
Brush brush1 = new SolidBrush(Color.Blue);
Brush brush2 = new SolidBrush(Color.SaddleBrown);

g.DrawString(this.ddlTaget.SelectedItem.Text + " " + this.ddlYear.SelectedItem.Text + 
" 成绩统计折线图", font1, brush1, new PointF(85, 30));
//画图片的边框线
g.DrawRectangle(new Pen(Color.Blue), 0, 0, image.Width - 1, image.Height - 1);

Pen mypen = new Pen(brush, 1);
Pen mypen2 = new Pen(Color.Red, 2);
//绘制线条
//绘制纵向线条
int x = 60;
for (int i = 0; i < 8; i++)
{
g.DrawLine(mypen, x, 80, x, 340);
x = x + 80;
}
Pen mypen1 = new Pen(Color.Blue, 3);
x = 60;
g.DrawLine(mypen1, x, 82, x, 340);

//绘制横向线条
int y = 106;
for (int i = 0; i < 10; i++)
{
g.DrawLine(mypen, 60, y, 620, y);
y = y + 26;
}
// y = 106;
g.DrawLine(mypen1, 60, y - 26, 620, y - 26);

//x轴
String[] n = { "第一期", "第二期", "第三期", "第四期", "上半年", "下半年", "全年统计" };
x = 45;
for (int i = 0; i < 7; i++)
{
g.DrawString(n[i].ToString(), font, Brushes.Red, x, 348); //设置文字内容及输出位置
x = x + 77;
}

//y轴
String[] m = { "220人", " 200人", " 175人", "150人", " 125人", " 100人", " 75人", " 50人",
" 25人"};
y = 100;
for (int i = 0; i < 9; i++)
{
g.DrawString(m[i].ToString(), font, Brushes.Red, 10, y); //设置文字内容及输出位置
y = y + 26;
}

int[] Count1 = new int[7];
int[] Count2 = new int[7];

SqlConnection Con = new SqlConnection("Server=(Local);Database=committeeTraining;Uid=sa;Pwd=eesoft");
Con.Open();
string cmdtxt2 = "SELECT * FROM ##Count where Company='" + this.ddlTaget.SelectedItem.Text.Trim() + "'";
SqlDataAdapter da = new SqlDataAdapter(cmdtxt2, Con);
DataSet ds = new DataSet();
da.Fill(ds);

//报名人数
Count1[0] = Convert.ToInt32(ds.Tables[0].Rows[0]["count1"].ToString());
Count1[1] = Convert.ToInt32(ds.Tables[0].Rows[0]["count3"].ToString());
Count1[2] = Convert.ToInt32(ds.Tables[0].Rows[0]["count5"].ToString());
Count1[3] = Convert.ToInt32(ds.Tables[0].Rows[0]["count7"].ToString());

Count1[6] = Convert.ToInt32(ds.Tables[0].Rows[0]["count9"].ToString()); //全年

Count1[4] = Count1[0] + Count1[1];
Count1[5] = Count1[2] + Count1[3];


Count2[0] = Convert.ToInt32(ds.Tables[0].Rows[0]["count2"].ToString());
Count2[1] = Convert.ToInt32(ds.Tables[0].Rows[0]["count4"].ToString());
Count2[2] = Convert.ToInt32(ds.Tables[0].Rows[0]["count6"].ToString());
Count2[3] = Convert.ToInt32(ds.Tables[0].Rows[0]["count8"].ToString());

Count2[6] = Convert.ToInt32(ds.Tables[0].Rows[0]["count10"].ToString()); //全年

Count2[4] = Count2[0] + Count2[1];
Count2[5] = Count2[2] + Count2[3];


//显示折线效果
Font font3 = new System.Drawing.Font("Arial", 10, FontStyle.Bold);
SolidBrush mybrush = new SolidBrush(Color.Red);
Point[] points1 = new Point[7];
points1[0].X = 60; points1[0].Y = 340 - Count1[0]; //从106纵坐标开始, 到(0, 0)坐标时
points1[1].X = 140; points1[1].Y = 340 - Count1[1];
points1[2].X = 220; points1[2].Y = 340 - Count1[2];
points1[3].X = 300; points1[3].Y = 340 - Count1[3];

points1[4].X = 380; points1[4].Y = 340 - Count1[4];
points1[5].X = 460; points1[5].Y = 340 - Count1[5];

points1[6].X = 540; points1[6].Y = 340 - Count1[6];
g.DrawLines(mypen2, points1); //绘制折线

//绘制数字
g.DrawString(Count1[0].ToString(), font3, Brushes.Red, 58, points1[0].Y - 20);
g.DrawString(Count1[1].ToString(), font3, Brushes.Red, 138, points1[1].Y - 20);
g.DrawString(Count1[2].ToString(), font3, Brushes.Red, 218, points1[2].Y - 20);
g.DrawString(Count1[3].ToString(), font3, Brushes.Red, 298, points1[3].Y - 20);

g.DrawString(Count1[4].ToString(), font3, Brushes.Red, 378, points1[4].Y - 20);
g.DrawString(Count1[5].ToString(), font3, Brushes.Red, 458, points1[5].Y - 20);

g.DrawString(Count1[6].ToString(), font3, Brushes.Red, 538, points1[6].Y - 20);

Pen mypen3 = new Pen(Color.Green, 2);
Point[] points2 = new Point[7];
points2[0].X = 60; points2[0].Y = 340 - Count2[0];
points2[1].X = 140; points2[1].Y = 340 - Count2[1];
points2[2].X = 220; points2[2].Y = 340 - Count2[2];
points2[3].X = 300; points2[3].Y = 340 - Count2[3];

points2[4].X = 380; points2[4].Y = 340 - Count2[4];
points2[5].X = 460; points2[5].Y = 340 - Count2[5];

points2[6].X = 540; points2[6].Y = 340 - Count2[6];
g.DrawLines(mypen3, points2); //绘制折线

//绘制通过人数
g.DrawString(Count2[0].ToString(), font3, Brushes.Green, 61, points2[0].Y - 15);
g.DrawString(Count2[1].ToString(), font3, Brushes.Green, 131, points2[1].Y - 15);
g.DrawString(Count2[2].ToString(), font3, Brushes.Green, 221, points2[2].Y - 15);
g.DrawString(Count2[3].ToString(), font3, Brushes.Green, 301, points2[3].Y - 15);

g.DrawString(Count2[4].ToString(), font3, Brushes.Green, 381, points2[4].Y - 15);
g.DrawString(Count2[5].ToString(), font3, Brushes.Green, 461, points2[5].Y - 15);

g.DrawString(Count2[6].ToString(), font3, Brushes.Green, 541, points2[6].Y - 15);

//绘制标识
g.DrawRectangle(new Pen(Brushes.Red), 180, 390, 250, 50); //绘制范围框
g.FillRectangle(Brushes.Red, 270, 402, 20, 10); //绘制小矩形
g.DrawString("报名人数", font2, Brushes.Red, 292, 400);

g.FillRectangle(Brushes.Green, 270, 422, 20, 10);
g.DrawString("通过人数", font2, Brushes.Green, 292, 420);

System.IO.MemoryStream ms = new System.IO.MemoryStream();
image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
Response.ClearContent();
Response.ContentType = "image/Jpeg";
Response.BinaryWrite(ms.ToArray());
}
finally
{
g.Dispose();
image.Dispose();
}
}

View Code

 

叁. 扇形总结图的绘图

效果图:

 

银河至尊游戏官网 7

 

扇形图完全代码:

银河至尊游戏官网 8银河至尊游戏官网 9

private void CreateImage()
{
//把连接字串指定为一个常量
SqlConnection Con = new SqlConnection("Server=(Local);
Database=committeeTraining;Uid=sa;Pwd=**");
Con.Open();
string cmdtxt = selectString; // "select * from ##Count"; //
//SqlCommand Com = new SqlCommand(cmdtxt, Con);
DataSet ds = new DataSet();
SqlDataAdapter Da = new SqlDataAdapter(cmdtxt, Con);
Da.Fill(ds);
Con.Close();
float Total = 0.0f, Tmp;

//转换成单精度。也可写成Convert.ToInt32
Total = Convert.ToSingle(ds.Tables[0].Rows[0][this.count[0]]);

// Total=Convert.ToSingle(ds.Tables[0].Rows[0][this.count[0]]);
//设置字体,fonttitle为主标题的字体
Font fontlegend = new Font("verdana", 9);
Font fonttitle = new Font("verdana", 10, FontStyle.Bold);

//背景宽
int width = 350;
int bufferspace = 15;
int legendheight = fontlegend.Height * 10 + bufferspace; //高度
int titleheight = fonttitle.Height + bufferspace;
int height = width + legendheight + titleheight + bufferspace;//白色背景高
int pieheight = width;
Rectangle pierect = new Rectangle(0, titleheight, width, pieheight);

//加上各种随机色
ArrayList colors = new ArrayList();
Random rnd = new Random();
for (int i = 0; i < 2; i++)
colors.Add(new SolidBrush(Color.FromArgb(rnd.Next(255), rnd.Next(255), rnd.Next(255))));

//创建一个bitmap实例
Bitmap objbitmap = new Bitmap(width, height);
Graphics objgraphics = Graphics.FromImage(objbitmap);

//画一个白色背景
objgraphics.FillRectangle(new SolidBrush(Color.White), 0, 0, width, height);

//画一个亮黄色背景 
objgraphics.FillRectangle(new SolidBrush(Color.Beige), pierect);

//以下为画饼图(有几行row画几个)
float currentdegree = 0.0f;

//画通过人数
objgraphics.FillPie((SolidBrush)colors[1], pierect, currentdegree,
Convert.ToSingle(ds.Tables[0].Rows[0][this.count[1]]) / Total * 360);
currentdegree += Convert.ToSingle(ds.Tables[0].Rows[0][this.count[1]]) / Total * 360;

//未通过人数饼状图
objgraphics.FillPie((SolidBrush)colors[0], pierect, currentdegree,
((Convert.ToSingle(ds.Tables[0].Rows[0][this.count[0]]))-(Convert.ToSingle(ds.Tables[0].Rows[0][this.count[1]]))) / Total * 360);
currentdegree += ((Convert.ToSingle(ds.Tables[0].Rows[0][this.count[0]])) - 
(Convert.ToSingle(ds.Tables[0].Rows[0][this.count[1]]))) / Total * 360;


//以下为生成主标题
SolidBrush blackbrush = new SolidBrush(Color.Black);
SolidBrush bluebrush = new SolidBrush(Color.Blue);
string title = " 机关单位成绩统计饼状图: "
+ "\n \n\n";
StringFormat stringFormat = new StringFormat();
stringFormat.Alignment = StringAlignment.Center;
stringFormat.LineAlignment = StringAlignment.Center;

objgraphics.DrawString(title, fonttitle, blackbrush,
new Rectangle(0, 0, width, titleheight), stringFormat);

//列出各字段与得数目
objgraphics.DrawRectangle(new Pen(Color.Red, 2), 0, height + 10 - legendheight, width, legendheight + 50);

objgraphics.DrawString("----------------统计信息------------------", 
fontlegend, bluebrush, 20, height - legendheight + fontlegend.Height * 1 + 1);
objgraphics.DrawString("统计单位: " + this.ddlTaget.SelectedItem.Text, 
fontlegend, blackbrush, 20, height - legendheight + fontlegend.Height * 3 + 1);
objgraphics.DrawString("统计年份: " + this.ddlYear.SelectedItem.Text, 
fontlegend, blackbrush, 20, height - legendheight + fontlegend.Height * 4 + 1);
objgraphics.DrawString("统计期数: " + this.ddlSpan.SelectedItem.Text, 
fontlegend, blackbrush, 20, height - legendheight + fontlegend.Height * 5 + 1);

objgraphics.FillRectangle((SolidBrush)colors[1], 5,height - legendheight + fontlegend.Height * 8 + 1, 10, 10);
objgraphics.DrawString("报名总人数: " + Convert.ToString(Convert.ToSingle(ds.Tables[0].Rows[0][this.count[0]])), 
fontlegend, blackbrush, 20, height - legendheight + fontlegend.Height * 7 + 1);
objgraphics.FillRectangle((SolidBrush)colors[0], 5, height - legendheight + fontlegend.Height * 9 + 1, 10, 10);
objgraphics.DrawString("通过总人数: " + Convert.ToString(Convert.ToSingle(ds.Tables[0].Rows[0][this.count[1]])), 
fontlegend, blackbrush, 20, height - legendheight + fontlegend.Height * 8 + 1);
objgraphics.DrawString("未通过人数: " + ((Convert.ToSingle(ds.Tables[0].Rows[0][this.count[0]])) - 
(Convert.ToSingle(ds.Tables[0].Rows[0][this.count[1]]))), fontlegend, blackbrush, 20, height - legendheight + fontlegend.Height * 9 + 1);

objgraphics.DrawString("通过率: " + Convert.ToString((Convert.ToSingle(ds.Tables[0].Rows[0][this.count[1]]) / 
Convert.ToSingle(ds.Tables[0].Rows[0][this.count[0]])) * 100)+ " %", fontlegend, 
blackbrush, 20, height - legendheight + fontlegend.Height * 10 + 1);

Response.ContentType = "image/Jpeg";
objbitmap.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
objgraphics.Dispose();
objbitmap.Dispose();

}

View Code

 

 那里的计算图直接出口到网页, 假若我们供给构建 winForm
上急需出示的总括图。可参看笔者事先写的:

C#构建艺术字

C#成就超酷的图像效果 (附demo)

出处:http://www.cnblogs.com/ziyiFly/archive/2008/09/24/1297841.html

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