private void Button1_Click(object sender, System.EventArgs e)
{
OWC.ChartSpaceClass owcChartSpace = new OWC.ChartSpaceClass();
OWC.WCChart owcChart = owcChartSpace.Charts.Add(0);
ADODB.Connection ConnADO = new ADODB.ConnectionClass();
ADODB.Recordset RecordsetADO = new ADODB.RecordsetClass(); string connectionString; connectionString = "driver={sql server};server=YOURSERVER;uid=YOURID;pwd=YOURPASSWORD; database=YOURDB";
ConnADO.Open(connectionString,"","",-1); RecordsetADO.ActiveConnection = ConnADO;
RecordsetADO.CursorType = ADODB.CursorTypeEnum.adOpenStatic;
RecordsetADO.CursorLocation = ADODB.CursorLocationEnum.adUseClient;
string strSQL;
strSQL = YOURSQL;
RecordsetADO.Open(strSQL, ConnADO,ADODB.CursorTypeEnum.adOpenStatic,ADODB.LockTypeEnum.adLockBatchOptimistic,1);
owcChartSpace.DataSource = (msdatasrc.DataSource)RecordsetADO; owcChart.Type = OWC.ChartChartTypeEnum.chChartTypePie;
owcChart.HasLegend = true; OWC.WCSeries ser;
ser = owcChart.SeriesCollection.Add(0);
ser.SetData(OWC.ChartDimensionsEnum.chDimCategories ,0,"分支机构");
ser.SetData(OWC.ChartDimensionsEnum.chDimValues,0,"帐户数");
OWC.WCDataLabels dls = ser.DataLabelsCollection.Add();
dls.HasPercentage = true;
dls.HasValue = false; string sFileName = Session["user"].ToString() + DateTime.Now.ToFileTime().ToString() + ".gif"; owcChartSpace.ExportPicture("d:\\ExcelFiles\\" + sFileName ,"gif",650,500);
Image1.ImageUrl = "d:\\ExcelFiles\\" + sFileName;
Image1.Width = 650;Image1.Height = 500;
Image1.Visible = true;
//RemoveFiles("d:\\ExcelFiles\\" + sFileName);
}
{
OWC.ChartSpaceClass owcChartSpace = new OWC.ChartSpaceClass();
OWC.WCChart owcChart = owcChartSpace.Charts.Add(0);
ADODB.Connection ConnADO = new ADODB.ConnectionClass();
ADODB.Recordset RecordsetADO = new ADODB.RecordsetClass(); string connectionString; connectionString = "driver={sql server};server=YOURSERVER;uid=YOURID;pwd=YOURPASSWORD; database=YOURDB";
ConnADO.Open(connectionString,"","",-1); RecordsetADO.ActiveConnection = ConnADO;
RecordsetADO.CursorType = ADODB.CursorTypeEnum.adOpenStatic;
RecordsetADO.CursorLocation = ADODB.CursorLocationEnum.adUseClient;
string strSQL;
strSQL = YOURSQL;
RecordsetADO.Open(strSQL, ConnADO,ADODB.CursorTypeEnum.adOpenStatic,ADODB.LockTypeEnum.adLockBatchOptimistic,1);
owcChartSpace.DataSource = (msdatasrc.DataSource)RecordsetADO; owcChart.Type = OWC.ChartChartTypeEnum.chChartTypePie;
owcChart.HasLegend = true; OWC.WCSeries ser;
ser = owcChart.SeriesCollection.Add(0);
ser.SetData(OWC.ChartDimensionsEnum.chDimCategories ,0,"分支机构");
ser.SetData(OWC.ChartDimensionsEnum.chDimValues,0,"帐户数");
OWC.WCDataLabels dls = ser.DataLabelsCollection.Add();
dls.HasPercentage = true;
dls.HasValue = false; string sFileName = Session["user"].ToString() + DateTime.Now.ToFileTime().ToString() + ".gif"; owcChartSpace.ExportPicture("d:\\ExcelFiles\\" + sFileName ,"gif",650,500);
Image1.ImageUrl = "d:\\ExcelFiles\\" + sFileName;
Image1.Width = 650;Image1.Height = 500;
Image1.Visible = true;
//RemoveFiles("d:\\ExcelFiles\\" + sFileName);
}
首先建立一个c#的类库。
打开vs.net,建立一个名为Insight_cs.WebCharts新的类库工程,将解决方案的名称改为Insight,将Class.cs文件名改为Insight_cs.WebCharts.cs,最后打开Insight_cs.WebCharts.cs文件。其中代码如下:
/*自定义类,通过输入不同的参数,这些类可以画不同的图形 */
using System;
using System.IO;//用于文件存取
using System.Data;//用于数据访问
using System.Drawing;//提供画GDI+图形的基本功能
using System.Drawing.Text;//提供画GDI+图形的高级功能
using System.Drawing.Drawing2D;//提供画高级二维,矢量图形功能
using System.Drawing.Imaging;//提供画GDI+图形的高级功能
namespace Insight_cs.WebCharts
{
public class PieChart
{
public PieChart()
{
}
public void Render(string title, string subTitle, int width, int height, DataSet chartData, Stream target)
{
const int SIDE_LENGTH = 400;
const int PIE_DIAMETER = 200;
DataTable dt = chartData.Tables[0];
//通过输入参数,取得饼图中的总基数
float sumData = 0;
foreach(DataRow dr in dt.Rows)
{
sumData += Convert.ToSingle(dr[1]);
}
//产生一个image对象,并由此产生一个Graphics对象
Bitmap bm = new Bitmap(width,height);
Graphics g = Graphics.FromImage(bm);
//设置对象g的属性
g.ScaleTransform((Convert.ToSingle(width))/SIDE_LENGTH,(Convert.ToSingle(height))/SIDE_LENGTH);
g.SmoothingMode = SmoothingMode.Default;
g.TextRenderingHint = TextRenderingHint.AntiAlias;
//画布和边的设定
g.Clear(Color.White);
g.DrawRectangle(Pens.Black,0,0,SIDE_LENGTH-1,SIDE_LENGTH-1);
//画饼图标题
g.DrawString(title,new Font("Tahoma",24),Brushes.Black,new PointF(5,5));
//画饼图的图例
g.DrawString(subTitle,new Font("Tahoma",14),Brushes.Black,new PointF(7,35));
//画饼图
float curAngle = 0;
float totalAngle = 0;
for(int i=0;i<dt.Rows.Count;i++)
{
curAngle = Convert.ToSingle(dt.Rows[i][1]) / sumData * 360;
g.FillPie(new SolidBrush(ChartUtil.GetChartItemColor(i)),100,65,PIE_DIAMETER,PIE_DIAMETER,totalAngle,curAngle);
g.DrawPie(Pens.Black,100,65,PIE_DIAMETER,PIE_DIAMETER,totalAngle,curAngle);
totalAngle += curAngle;
}
//画图例框及其文字
g.DrawRectangle(Pens.Black,200,300,199,99);
g.DrawString("Legend",new Font("Tahoma",12,FontStyle.Bold),Brushes.Black,new PointF(200,300));
//画图例各项
PointF boxOrigin = new PointF(210,330);
PointF textOrigin = new PointF(235,326);
float percent = 0;
for(int i=0;i<dt.Rows.Count;i++)
{
g.FillRectangle(new SolidBrush(ChartUtil.GetChartItemColor(i)),boxOrigin.X,boxOrigin.Y,20,10);
g.DrawRectangle(Pens.Black,boxOrigin.X,boxOrigin.Y,20,10);
percent = Convert.ToSingle(dt.Rows[i][1]) / sumData * 100;
g.DrawString(dt.Rows[i][0].ToString() + " - " + dt.Rows[i][1].ToString() + " (" + percent.ToString("0") + "%)",new Font("Tahoma",10),Brushes.Black,textOrigin);
boxOrigin.Y += 15;
textOrigin.Y += 15;
}
//通过Response.OutputStream,将图形的内容发送到浏览器
bm.Save(target, ImageFormat.Gif);
//回收资源
bm.Dispose();
g.Dispose();
}
}
//画条形图
public class BarChart
{
public BarChart()
{
}
public void Render(string title, string subTitle, int width, int height, DataSet chartData, Stream target)
{
const int SIDE_LENGTH = 400;
const int CHART_TOP = 75;
const int CHART_HEIGHT = 200;
const int CHART_LEFT = 50;
const int CHART_WIDTH = 300;
DataTable dt = chartData.Tables[0];
//计算最高的点
float highPoint = 0;
foreach(DataRow dr in dt.Rows)
{
if(highPoint<Convert.ToSingle(dr[1]))
{
highPoint = Convert.ToSingle(dr[1]);
}
}
//建立一个Graphics对象实例
Bitmap bm = new Bitmap(width,height);
Graphics g = Graphics.FromImage(bm);
//设置条图图形和文字属性
g.ScaleTransform((Convert.ToSingle(width))/SIDE_LENGTH,(Convert.ToSingle(height))/SIDE_LENGTH);
g.SmoothingMode = SmoothingMode.Default;
g.TextRenderingHint = TextRenderingHint.AntiAlias;
//设定画布和边
g.Clear(Color.White);
g.DrawRectangle(Pens.Black,0,0,SIDE_LENGTH-1,SIDE_LENGTH-1);
//画大标题
g.DrawString(title,new Font("Tahoma",24),Brushes.Black,new PointF(5,5));
//画小标题
g.DrawString(subTitle,new Font("Tahoma",14),Brushes.Black,new PointF(7,35));
//画条形图
float barWidth = CHART_WIDTH / (dt.Rows.Count * 2);
PointF barOrigin = new PointF(CHART_LEFT + (barWidth / 2),0);
float barHeight = dt.Rows.Count;
for(int i=0;i<dt.Rows.Count;i++)
{
barHeight = Convert.ToSingle(dt.Rows[i][1]) * 200 / highPoint;
barOrigin.Y = CHART_TOP + CHART_HEIGHT - barHeight;
g.FillRectangle(new SolidBrush(ChartUtil.GetChartItemColor(i)),barOrigin.X,barOrigin.Y,barWidth,barHeight);
barOrigin.X = barOrigin.X + (barWidth * 2);
}
//设置边
g.DrawLine(new Pen(Color.Black,2),new Point(CHART_LEFT,CHART_TOP),new Point(CHART_LEFT,CHART_TOP + CHART_HEIGHT));
g.DrawLine(new Pen(Color.Black,2),new Point(CHART_LEFT,CHART_TOP + CHART_HEIGHT),new Point(CHART_LEFT + CHART_WIDTH,CHART_TOP + CHART_HEIGHT));
//画图例框和文字
g.DrawRectangle(new Pen(Color.Black,1),200,300,199,99);
g.DrawString("Legend",new Font("Tahoma",12,FontStyle.Bold),Brushes.Black,new PointF(200,300));
//画图例
PointF boxOrigin = new PointF(210,330);
PointF textOrigin = new PointF(235,326);
for(int i=0;i<dt.Rows.Count;i++)
{
g.FillRectangle(new SolidBrush(ChartUtil.GetChartItemColor(i)),boxOrigin.X,boxOrigin.Y,20,10);
g.DrawRectangle(Pens.Black,boxOrigin.X,boxOrigin.Y,20,10);
g.DrawString(dt.Rows[i][0].ToString() + " - " + dt.Rows[i][1].ToString(),new Font("Tahoma",10),Brushes.Black,textOrigin);
boxOrigin.Y += 15;
textOrigin.Y += 15;
}
//输出图形
bm.Save(target, ImageFormat.Gif);
//资源回收
bm.Dispose();
g.Dispose();
}
}
public class ChartUtil
{
public ChartUtil()
{
}
public static Color GetChartItemColor(int itemIndex)
{
Color selectedColor;
switch(itemIndex)
{
case 0:
selectedColor = Color.Blue;
break;
case 1:
selectedColor = Color.Red;
break;
case 2:
selectedColor = Color.Yellow;
break;
case 3:
selectedColor = Color.Purple;
break;
default:
selectedColor = Color.Green;
break;
}
return selectedColor;
}
}
}
首先建立一个c#的类库。
打开vs.net,建立一个名为Insight_cs.WebCharts新的类库工程,将解决方案的名称改为Insight,将Class.cs文件名改为Insight_cs.WebCharts.cs,最后打开Insight_cs.WebCharts.cs文件。其中代码如下:
/*自定义类,通过输入不同的参数,这些类可以画不同的图形 */
using System;
using System.IO;//用于文件存取
using System.Data;//用于数据访问
using System.Drawing;//提供画GDI+图形的基本功能
using System.Drawing.Text;//提供画GDI+图形的高级功能
using System.Drawing.Drawing2D;//提供画高级二维,矢量图形功能
using System.Drawing.Imaging;//提供画GDI+图形的高级功能
namespace Insight_cs.WebCharts
{
public class PieChart
{
public PieChart()
{
}
public void Render(string title, string subTitle, int width, int height, DataSet chartData, Stream target)
{
const int SIDE_LENGTH = 400;
const int PIE_DIAMETER = 200;
DataTable dt = chartData.Tables[0];
//通过输入参数,取得饼图中的总基数
float sumData = 0;
foreach(DataRow dr in dt.Rows)
{
sumData += Convert.ToSingle(dr[1]);
}
//产生一个image对象,并由此产生一个Graphics对象
Bitmap bm = new Bitmap(width,height);
Graphics g = Graphics.FromImage(bm);
//设置对象g的属性
g.ScaleTransform((Convert.ToSingle(width))/SIDE_LENGTH,(Convert.ToSingle(height))/SIDE_LENGTH);
g.SmoothingMode = SmoothingMode.Default;
g.TextRenderingHint = TextRenderingHint.AntiAlias;
//画布和边的设定
g.Clear(Color.White);
g.DrawRectangle(Pens.Black,0,0,SIDE_LENGTH-1,SIDE_LENGTH-1);
//画饼图标题
g.DrawString(title,new Font("Tahoma",24),Brushes.Black,new PointF(5,5));
//画饼图的图例
g.DrawString(subTitle,new Font("Tahoma",14),Brushes.Black,new PointF(7,35));
//画饼图
float curAngle = 0;
float totalAngle = 0;
for(int i=0;i<dt.Rows.Count;i++)
{
curAngle = Convert.ToSingle(dt.Rows[i][1]) / sumData * 360;
g.FillPie(new SolidBrush(ChartUtil.GetChartItemColor(i)),100,65,PIE_DIAMETER,PIE_DIAMETER,totalAngle,curAngle);
g.DrawPie(Pens.Black,100,65,PIE_DIAMETER,PIE_DIAMETER,totalAngle,curAngle);
totalAngle += curAngle;
}
//画图例框及其文字
g.DrawRectangle(Pens.Black,200,300,199,99);
g.DrawString("Legend",new Font("Tahoma",12,FontStyle.Bold),Brushes.Black,new PointF(200,300));
//画图例各项
PointF boxOrigin = new PointF(210,330);
PointF textOrigin = new PointF(235,326);
float percent = 0;
for(int i=0;i<dt.Rows.Count;i++)
{
g.FillRectangle(new SolidBrush(ChartUtil.GetChartItemColor(i)),boxOrigin.X,boxOrigin.Y,20,10);
g.DrawRectangle(Pens.Black,boxOrigin.X,boxOrigin.Y,20,10);
percent = Convert.ToSingle(dt.Rows[i][1]) / sumData * 100;
g.DrawString(dt.Rows[i][0].ToString() + " - " + dt.Rows[i][1].ToString() + " (" + percent.ToString("0") + "%)",new Font("Tahoma",10),Brushes.Black,textOrigin);
boxOrigin.Y += 15;
textOrigin.Y += 15;
}
//通过Response.OutputStream,将图形的内容发送到浏览器
bm.Save(target, ImageFormat.Gif);
//回收资源
bm.Dispose();
g.Dispose();
}
}
//画条形图
public class BarChart
{
public BarChart()
{
}
public void Render(string title, string subTitle, int width, int height, DataSet chartData, Stream target)
{
const int SIDE_LENGTH = 400;
const int CHART_TOP = 75;
const int CHART_HEIGHT = 200;
const int CHART_LEFT = 50;
const int CHART_WIDTH = 300;
DataTable dt = chartData.Tables[0];
//计算最高的点
float highPoint = 0;
foreach(DataRow dr in dt.Rows)
{
if(highPoint<Convert.ToSingle(dr[1]))
{
highPoint = Convert.ToSingle(dr[1]);
}
}
//建立一个Graphics对象实例
Bitmap bm = new Bitmap(width,height);
Graphics g = Graphics.FromImage(bm);
//设置条图图形和文字属性
g.ScaleTransform((Convert.ToSingle(width))/SIDE_LENGTH,(Convert.ToSingle(height))/SIDE_LENGTH);
g.SmoothingMode = SmoothingMode.Default;
g.TextRenderingHint = TextRenderingHint.AntiAlias;
//设定画布和边
g.Clear(Color.White);
g.DrawRectangle(Pens.Black,0,0,SIDE_LENGTH-1,SIDE_LENGTH-1);
//画大标题
g.DrawString(title,new Font("Tahoma",24),Brushes.Black,new PointF(5,5));
//画小标题
g.DrawString(subTitle,new Font("Tahoma",14),Brushes.Black,new PointF(7,35));
//画条形图
float barWidth = CHART_WIDTH / (dt.Rows.Count * 2);
PointF barOrigin = new PointF(CHART_LEFT + (barWidth / 2),0);
float barHeight = dt.Rows.Count;
for(int i=0;i<dt.Rows.Count;i++)
{
barHeight = Convert.ToSingle(dt.Rows[i][1]) * 200 / highPoint;
barOrigin.Y = CHART_TOP + CHART_HEIGHT - barHeight;
g.FillRectangle(new SolidBrush(ChartUtil.GetChartItemColor(i)),barOrigin.X,barOrigin.Y,barWidth,barHeight);
barOrigin.X = barOrigin.X + (barWidth * 2);
}
//设置边
g.DrawLine(new Pen(Color.Black,2),new Point(CHART_LEFT,CHART_TOP),new Point(CHART_LEFT,CHART_TOP + CHART_HEIGHT));
g.DrawLine(new Pen(Color.Black,2),new Point(CHART_LEFT,CHART_TOP + CHART_HEIGHT),new Point(CHART_LEFT + CHART_WIDTH,CHART_TOP + CHART_HEIGHT));
//画图例框和文字
g.DrawRectangle(new Pen(Color.Black,1),200,300,199,99);
g.DrawString("Legend",new Font("Tahoma",12,FontStyle.Bold),Brushes.Black,new PointF(200,300));
//画图例
PointF boxOrigin = new PointF(210,330);
PointF textOrigin = new PointF(235,326);
for(int i=0;i<dt.Rows.Count;i++)
{
g.FillRectangle(new SolidBrush(ChartUtil.GetChartItemColor(i)),boxOrigin.X,boxOrigin.Y,20,10);
g.DrawRectangle(Pens.Black,boxOrigin.X,boxOrigin.Y,20,10);
g.DrawString(dt.Rows[i][0].ToString() + " - " + dt.Rows[i][1].ToString(),new Font("Tahoma",10),Brushes.Black,textOrigin);
boxOrigin.Y += 15;
textOrigin.Y += 15;
}
//输出图形
bm.Save(target, ImageFormat.Gif);
//资源回收
bm.Dispose();
g.Dispose();
}
}
public class ChartUtil
{
public ChartUtil()
{
}
public static Color GetChartItemColor(int itemIndex)
{
Color selectedColor;
switch(itemIndex)
{
case 0:
selectedColor = Color.Blue;
break;
case 1:
selectedColor = Color.Red;
break;
case 2:
selectedColor = Color.Yellow;
break;
case 3:
selectedColor = Color.Purple;
break;
default:
selectedColor = Color.Green;
break;
}
return selectedColor;
}
}
}
这里有一个免费的WebChart控件,无源码,自带demo,运行时无版权显示。