2024年4月25日发(作者：)
C#
.NET Win
Form
绘制
饼图，直方图，曲线图
详细代码 自定义图形类(饼图，直方图，曲线图)
using System;
using ;
using ;
using pServices;
using ;
using ;
using ent;
using ing;
using ;
using ption;
using m;
using ;
using er;
using c;
using entModel;
using g;
using graphy;
using g;
using tions;
public class Func
{
private static AChart chart = new AChart();
private static Object[] ChartColor ={ , , ,
,, , , ate, ,
, er, , a, in, ,
, , , , , ,
, , , , ise, arent};
///
/// 填充饼图、直方图、曲线图到容器里
///
/// 标题
/// 容器(Panel,Form,TabPage)
/// 对Table[0]进行操作，饼图取最前两列，第一
列为名字，第二列为值。单数据直方图取最前两列，第一列为横轴每列名称，第
二列为值。多数据直方图第一列为横轴父项名称，然后依次取前一列为横轴每列
名称，后一列为值。曲线图取第一列为横轴每列名称，往后每列都代表一条曲线，
列名为曲线名称。
/// 图表类型
/// 刻度最小值，此参数对饼图无效
/// 刻度最大值，此参数对饼图无效
/// 刻度值，此参数对饼图无效
/// 值的单位，此参数对饼图无效
public static void DrawingChart(string chartTitle, Control control, DataSet
dataSet, ChartType chartType, int minNumber, int maxNumber, int scale,string unit)
{
DrawingChartInclude(chartTitle, control, dataSet, chartType,
minNumber, maxNumber, scale,unit);
}
///
/// 填充饼图到容器里
///
/// 标题
/// 容器(Panel,Form,TabPage)
/// 对Table[0]进行操作，取最前两列，第一列为
名字，第二列为值
public static void DrawingChart(string chartTitle,Control control, DataSet
dataSet)
{
DrawingChartInclude(chartTitle, control, dataSet, ph,
0, 0, 0,"");
}
private static void DrawingChartInclude(string chartTitle, Control control,
DataSet dataSet, ChartType chartType, int minNumber, int maxNumber, int
scale,string unit)
{
if ( < 230 || < 230)
{
("容器宽度或长度设置过小！（宽度和长度必须>=230）
");
return;
}
if (e().("Form") ||
e().("TabPage") ||
e().("GroupBox") ||
e().("Panel"))
{
for (int i = 0; i < ; i++)
{
if (control == (Control)chart[i].crtObj)
{
Chart(i);
break;
}
}
rt(chartTitle, control, chartType, dataSet,
minNumber, maxNumber, scale,unit);
+= new PaintEventHandler(control_Paint);
ed += new EventHandler(control_Disposed);
h();
}
else
{
("该容器不是Form,TabPage,GroupBox,Panel类型！");
return;
}
}
static void control_Paint(object sender, PaintEventArgs e)
{
try
{
for (int i = 0; i < ; i++)
{
if (chart[i].crtType == )
{
break;
}
else if (chart[i].crtObj != sender)
{
continue;
}
int x = 0;
int y = 0;
int diameter = (((Control)chart[i].crtObj).Height,
((Control)chart[i].crtObj).Width) - 100;
if (((Control)chart[i].crtObj).Width >=
((Control)chart[i].crtObj).Height)
{
x = (((Control)chart[i].crtObj).Width -
((Control)chart[i].crtObj).Height) / 2 + 50;
y = 50;
}
else
{
x = 50;
y = (((Control)chart[i].crtObj).Height -
((Control)chart[i].crtObj).Width) / 2 + 50;
}
Pen line = new Pen(, 2);
SolidBrush linesb = new SolidBrush(een);
Rectangle rect = new Rectangle(x, y, diameter, diameter);
Pen title = new Pen(, 2);
SolidBrush B = new SolidBrush();
StringFormat Ll = new StringFormat();
ent = ;
int height = ((Control)chart[i].crtObj).Height - 20;
RectangleF RectTitle = new RectangleF(5, 5, diameter,
diameter);
ring(chart[i].crtTitle, new Font("Arial", 14),
B, RectTitle, Ll);
#region 饼图
if (chart[i].crtType == ph)
{
float total = 0;
float fontWidth = 0;
for (int j = 0; j < chart[i].[0].;
j++)
{
total +=
(float)le(chart[i].[0].Rows[j][1].ToString());
if (fontWidth <
eString(chart[i].[0].Rows[j][0].ToString(), new
Font("Arial", 10)).Width)
{
fontWidth =
eString(chart[i].[0].Rows[j][0].ToString(), new
Font("Arial", 10)).Width;
}
}
float next = 0;
for (int j = 0; j < chart[i].[0].;
j++)
{
SolidBrush sb = new
SolidBrush((Color)ChartColor[j % ]);
float tmp =
(float)(le(chart[i].[0].Rows[j][1].ToString()) / total *
100 * 3.6);
e(sb, rect, next, tmp);
RectTitle = new RectangleF(5, height, diameter,
diameter);
B = new SolidBrush();
ring(chart[i].[0].Rows[j][0].ToString(), new
Font("Arial", 10), B, RectTitle, Ll);
RectTitle = new RectangleF(5 + (int)fontWidth + 2,
height, 10, 12);
ctangle(sb, RectTitle);
RectTitle = new RectangleF(x + diameter + 2, height,
10, 12);
ctangle(sb, RectTitle);
RectTitle = new RectangleF(x + diameter + 14,
height, diameter, diameter);
ring(ng(((le(chart[i].crtDa
[0].Rows[j][1].ToString()) / total * 100), 0)) + "%", new Font("Arial", 10), B,
RectTitle, Ll);
height -= 20;
next += tmp;
}
}
#endregion
#region 直方图
else if (chart[i].crtType == ram)
{
ne(line, x, y, x, y + diameter);
height = y + diameter - 12;
int scaleBS = diameter / ((chart[i].crtMaxNumber -
chart[i].crtMinNumber) / chart[i].crtScale);
float fontWidth =
eString(chart[i].ng(), new Font("Arial",
10)).Width;
for (int j = chart[i].crtMinNumber; j <=
chart[i].crtMaxNumber; j += chart[i].crtScale)
{
RectangleF RectScaleHeightLine = new RectangleF(x
- fontWidth - 1, height, diameter, diameter);
ring(ng(), new Font("Arial",
10), linesb, RectScaleHeightLine, Ll);
height -= scaleBS;
}
height = y + diameter;
int width = x + 10;
for (int j = 0; j < chart[i].[0].;
j++)
{
if (chart[i].[0]. <=
2)
{
SolidBrush sb = new
SolidBrush((Color)ChartColor[j % ]);
RectangleF RectScale = new RectangleF(width,
height, diameter, diameter);
ring(chart[i].[0].Rows[j][0].ToString(), new
Font("Arial", 10), sb, RectScale, Ll);
double aa =
le(chart[i].[0].Rows[j][1].ToString()) / chart[i].crtScale
* scaleBS;
RectScale = new RectangleF(width, y +
diameter - (int)aa, 20, (int)aa);
ctangle(sb, RectScale);
RectScale = new RectangleF(width, y +
diameter - (int)aa - 15, diameter, diameter);
ring(chart[i].[0].Rows[j][1].ToString() +
chart[i].crtUnit, new Font("Arial", 10), sb, RectScale);
}
else
{
int sbnum = 0;
RectangleF RectScale = new RectangleF(width,
height + 24, diameter, diameter);
ring(chart[i].[0].Rows[j][0].ToString(), new
Font("Arial", 10), B, RectScale, Ll);
for (int k = 1; k <
chart[i].[0].; k += 2)
{
SolidBrush sb = new
SolidBrush((Color)ChartColor[sbnum % ]);
sbnum++;
RectScale = new RectangleF(width, height
+ (sbnum % 2) * 12, diameter, diameter);
ring(chart[i].[0].Rows[j][k].ToString(), new
Font("Arial", 8), sb, RectScale, Ll);
double aa =
le(chart[i].[0].Rows[j][k + 1].ToString()) /
chart[i].crtScale * scaleBS;
RectScale = new RectangleF(width, y +
diameter - (int)aa, 20, (int)aa);
ctangle(sb, RectScale);
RectScale = new RectangleF(width, y +
diameter - (int)aa - 15, diameter, diameter);
ring(chart[i].[0].Rows[j][k + 1].ToString() +
chart[i].crtUnit, new Font("Arial", 8), sb, RectScale);
width += 30;
}
}
if ((fontWidth +
eString(chart[i].crtUnit, new Font("Arial", 10)).Width) >= 30)
{
width += (int)fontWidth +
(int)eString(chart[i].crtUnit, new Font("Arial", 10)).Width + 10;
}
else
{
width += 30;
}
}
ne(line, x, y + diameter, width, y +
diameter);
}
#endregion
#region 曲线图
else if (chart[i].crtType == am)
{
int width = x;
int scaleBS = diameter / ((chart[i].crtMaxNumber -
chart[i].crtMinNumber) / chart[i].crtScale);
int scaleWidthBS = diameter /
chart[i].[0].;
height = y + diameter - ((chart[i].crtMaxNumber -
chart[i].crtMinNumber) / chart[i].crtScale) * scaleBS;
float fontWidth =
eString(chart[i].ng(), new Font("Arial",
10)).Width;
for (int j = 0; j <=
chart[i].[0].; j++)
{
ne(line, width, height, width, y +
diameter);
width += scaleWidthBS;
}
height = y + diameter - 12;
for (int j = chart[i].crtMinNumber; j <=
chart[i].crtMaxNumber; j += chart[i].crtScale)
{
ne(line, x, height + 12, x +
scaleWidthBS * chart[i].[0]., height + 12);
RectangleF RectScaleHeightLine = new RectangleF(x
- fontWidth - 1, height, diameter, diameter);
ring(ng(), new Font("Arial",
10), linesb, RectScaleHeightLine, Ll);
height -= scaleBS;
}
width = x;
height = y + diameter;
double nowheight = 0;
for (int j = 0; j < chart[i].[0].;
j++)
{
height = y + diameter;
SolidBrush textsb = new SolidBrush();
RectangleF rectText = new RectangleF(width +
scaleWidthBS, height + 2 + (j % 2) * 12, diameter, diameter);
ring(chart[i].[0].Rows[j][0].ToString(), new
Font("Arial", 10), textsb, rectText);
//
for (int k = 1; k <
chart[i].[0].; k++)
{
Pen polygramLine = new
Pen((Color)ChartColor[(k - 1) % ]);
SolidBrush valueSB = new
SolidBrush((Color)ChartColor[(k - 1) % ]);
double aa = y + diameter;
if (j > 0)
{
aa = y + diameter -
le(chart[i].[0].Rows[j - 1][k].ToString()) /
chart[i].crtScale * scaleBS;
}
nowheight = y + diameter -
le(chart[i].[0].Rows[j][k].ToString()) / chart[i].crtScale
* scaleBS;
ne(polygramLine, width,
(int)aa, width + scaleWidthBS, (int)nowheight);
RectangleF RectScale = new RectangleF(width
+ scaleWidthBS, (int)nowheight - 12, diameter, diameter);
ring(chart[i].[0].Rows[j][k].ToString() +
chart[i].crtUnit, new Font("Arial", 10), valueSB, RectScale);
}
width += scaleWidthBS;
}
fontWidth = 0;
for (int j = 1; j <
chart[i].[0].; j++)
{
if (fontWidth <
eString(chart[i].[0].Columns[j].
ng(), new Font("Arial", 10)).Width)
{
fontWidth =
eString(chart[i].[0].Columns[j].
ng(), new Font("Arial", 10)).Width;
}
}
height = y + diameter;
for (int j = 1; j <
chart[i].[0].; j++)
{
RectTitle = new RectangleF(5, height, diameter,
diameter);
B = new SolidBrush();
SolidBrush valueSB = new
SolidBrush((Color)ChartColor[(j - 1) % ]);
ring(chart[i].[0].Columns[j].ng(
), new Font("Arial", 10), B, RectTitle, Ll);
RectTitle = new RectangleF(5 + (int)fontWidth + 2,
height, 15, 12);
ctangle(valueSB, RectTitle);
height -= 20;
}
}
#endregion
break;
}
}
catch
{
return;
}
}
static void control_Disposed(object sender, EventArgs e)
{
for (int i=0;i<;i++)
{
if ((Control)sender == (Control)chart[i].crtObj)
{
Chart(i);
break;
}
}
}
}
public class pChart
{
public Object crtObj;
public ChartType crtType;
public DataSet crtDataSet;
public string crtTitle = "";
public int crtMinNumber = 0;
public int crtMaxNumber = 0;
public int crtScale = 0;
public string crtUnit = "";
public pChart(string chartTitle,Object chartObject, ChartType chartType,
DataSet chartDataSet, int minNumber, int maxNumber, int scale,string unit)
{
crtObj = chartObject;
crtType = chartType;
crtDataSet = chartDataSet;
crtTitle = chartTitle;
crtMinNumber = minNumber;
crtMaxNumber = maxNumber;
crtScale = scale;
crtUnit = unit;
}
}
public class AChart : tionBase
{
public AChart()
{ }
public void AddChart(string chartTitle, Object chartObject, ChartType
chartType, DataSet chartDataSet, int minNumber, int maxNumber, int scale,string unit)
{
(new
pChart(chartTitle,chartObject,chartType,chartDataSet,minNumber,maxNumber,scale,
unit));
}
public void RemoveChart(int index)
{
if (index > Count - 1 || index < 0)
{
("Index not valid!");
}
else
{
At(index);
}
}
public AChart Item
{
get
{
return this;
}
}
[rName("item")]
public pChart this[int index]
{
get
{
return (pChart)List[index];
}
}
}
///
/// 图表类型
///
public enum ChartType
{
///
/// 直方图
///
Histogram,
///
/// 饼图
///
Piegraph,
///
/// 曲线图
///
Polygram,
///
/// None
///
None
}
测试用例：
private void button1_Click(object sender, EventArgs e)
{
DataSet ds = new DataSet();
ds = ("select '甲' as name,50 as value union all select '乙
',60 union all select '丙',70 union all select '丁',80");
gChart("饼图测试", 1, ds);
}
private void button2_Click(object sender, EventArgs e)
{
DataSet ds = new DataSet();
ds = ("select '甲' as name,50 as value union all select '乙
',60 union all select '丙',70 union all select '丁',80");
gChart("直方图一测试", 1,
ds,ram,0,100,10,"万");
}
private void button3_Click(object sender, EventArgs e)
{
DataSet ds = new DataSet();
ds = ("select '一月' as 月份,'甲' as name,50 as value,'乙'
as name2,60 as value2 union all select '二月' as 月份,'甲',70,'乙',80");
gChart("直方图一测试", 1, ds,
ram, 0, 100, 10, "万");
}
private void button4_Click(object sender, EventArgs e)
{
DataSet ds = new DataSet();
ds = ("select '一月' as 月份,50 as 甲,60 as 乙 union all
select '二月', 60,40 union all select '三月',70,50 union all select '四月',30,60 union all
select '五月',40,80 union all select '六月',70,90");
gChart("曲线图测试", 1, ds, am,
0, 100, 10, "瓦");
}
注：测试用例内的ds数据请自行写数据库连接，用填充。
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