C#画图

翻出以前刚到公司自己做的这个,以前查资料作了半天,发现 现在 有些都忘了 ,贴在此处

 

PanelChart.class

 

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 Comm 
{ 
	public class PanelChart 
	{ 
		public PanelChart() 
		{ 

		} 
		public Image draw(int width,int height,
			int max1,string title1,string subTitle1,int data1_1,string name1_1,int data1_2,string name1_2,
			int max2,string title2,string subTitle2,int data2_1,string name2_1,int data2_2,string name2_2,
			int max3,string title3,string subTitle3,int data3_1,string name3_1,int data3_2,string name3_2,
			int max4,string title4,string subTitle4,int data4_1,string name4_1,int data4_2,string name4_2)
		{
			DataSet ds=new DataSet();

			DataTable dt1=new DataTable("myDT1");
			dt1.Columns.Add("data",typeof(System.Int32));
			dt1.Columns.Add("name",typeof(System.String));
			dt1.Columns.Add("max",typeof(System.Int32));
			dt1.Columns.Add("title",typeof(System.String));
			dt1.Columns.Add("subTitle",typeof(System.String));
			DataRow dr1_1=dt1.NewRow();
			dr1_1[0]=data1_1;
			dr1_1[1]=name1_1;
			dr1_1[2]=max1;
			dr1_1[3]=title1;
			dr1_1[4]=subTitle1;
			DataRow dr1_2=dt1.NewRow();
			dr1_2[0]=data1_2;
			dr1_2[1]=name1_2;
			dr1_2[2]=max1;
			dr1_2[3]=title1;
			dr1_2[4]=subTitle1;
			dt1.Rows.Add(dr1_1);
			dt1.Rows.Add(dr1_2);

			DataTable dt2=new DataTable("myDT2");
			dt2.Columns.Add("data",typeof(System.Int32));
			dt2.Columns.Add("name",typeof(System.String));
			dt2.Columns.Add("max",typeof(System.Int32));
			dt2.Columns.Add("title",typeof(System.String));
			dt2.Columns.Add("subTitle",typeof(System.String));
			DataRow dr2_1=dt2.NewRow();
			dr2_1[0]=data2_1;
			dr2_1[1]=name2_1;
			dr2_1[2]=max2;
			dr2_1[3]=title2;
			dr2_1[4]=subTitle2;
			DataRow dr2_2=dt2.NewRow();
			dr2_2[0]=data2_2;
			dr2_2[1]=name2_2;
			dr2_2[2]=max2;
			dr2_2[3]=title2;
			dr2_2[4]=subTitle2;
			dt2.Rows.Add(dr2_1);
			dt2.Rows.Add(dr2_2);
			

			DataTable dt3=new DataTable("myDT3");
			dt3.Columns.Add("data",typeof(System.Int32));
			dt3.Columns.Add("name",typeof(System.String));
			dt3.Columns.Add("max",typeof(System.Int32));
			dt3.Columns.Add("title",typeof(System.String));
			dt3.Columns.Add("subTitle",typeof(System.String));
			DataRow dr3_1=dt3.NewRow();
			DataRow dr3_2=dt3.NewRow();
			dr3_1[0]=data3_1;
			dr3_1[1]=name3_1;
			dr3_1[2]=max3;
			dr3_1[3]=title3;
			dr3_1[4]=subTitle3;
			dr3_2[0]=data3_2;
			dr3_2[1]=name3_2;
			dr3_2[2]=max3;
			dr3_2[3]=title3;
			dr3_2[4]=subTitle3;
			dt3.Rows.Add(dr3_1);
			dt3.Rows.Add(dr3_2);
			
			
			DataTable dt4=new DataTable("myDT4");
			dt4.Columns.Add("data",typeof(System.Int32));
			dt4.Columns.Add("name",typeof(System.String));
			dt4.Columns.Add("max",typeof(System.Int32));
			dt4.Columns.Add("title",typeof(System.String));
			dt4.Columns.Add("subTitle",typeof(System.String));
			DataRow dr4_1=dt4.NewRow();
			DataRow dr4_2=dt4.NewRow();
			dr4_1[0]=data4_1;
			dr4_1[1]=name4_1;
			dr4_1[2]=max4;
			dr4_1[3]=title4;
			dr4_1[4]=subTitle4;
			dr4_2[0]=data4_2;
			dr4_2[2]=max4;
			dr4_2[1]=name4_2;
			dr4_2[3]=title4;
			dr4_2[4]=subTitle4;
			dt4.Rows.Add(dr4_1);
			dt4.Rows.Add(dr4_2);
			

			ds.Tables.Add(dt1);
			ds.Tables.Add(dt2);
			ds.Tables.Add(dt3);
			ds.Tables.Add(dt4);

			return this.Render(width,height,ds,0);
		}

		public Image draw(int width,int height,DataSet chartData)
		{
			return this.Render(width,height,chartData,0);
		}

		public Image badRender(int width, int height)
		{

			const int SIDE_LENGTH = 400; 

			Bitmap bm = new Bitmap(width,height); 
			try
			{
				Graphics g = Graphics.FromImage(bm); 


				g.ScaleTransform((Convert.ToSingle(width))/SIDE_LENGTH/4,(Convert.ToSingle(width/4))/SIDE_LENGTH); 
				
				g.SmoothingMode = SmoothingMode.Default; 
				
				g.TextRenderingHint = TextRenderingHint.AntiAlias; 

				//设定画布和边 
				g.Clear(Color.LightGray); 

				g.DrawString("",new Font("Tahoma",22,FontStyle.Bold),Brushes.Black,new PointF(10,5)); 


				//g.DrawString("Sorry,Draw Back Ground Image Error,Please Message Admin!",new Font("Tahoma",22,FontStyle.Bold),Brushes.Black,new PointF(10,5)); 
				g.Dispose(); 
	
				return bm; 
			}
			catch(Exception ex)
			{
				
				return bm; 
			}
		}
		private Image Render(int width, int height,DataSet chartData,int dataLine) 
		{ 
			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; 

			//建立一个Graphics对象实例 
			Bitmap bm = new Bitmap(width,height); 
			try 
			{ 
				Graphics g = Graphics.FromImage(bm); 
				
				//设置条图图形和文字属性 
				g.ScaleTransform((Convert.ToSingle(width))/SIDE_LENGTH/4,(Convert.ToSingle(width/4))/SIDE_LENGTH); 
				
				g.SmoothingMode = SmoothingMode.Default; 
				
				g.TextRenderingHint = TextRenderingHint.AntiAlias; 

				//设定画布和边 
				g.Clear(Color.White); 

				for(int k=0;k<4;k++)
				{
					
					DataTable dt = chartData.Tables[k];
 
					float highPoint = float.Parse(dt.Rows[0][2].ToString());

					g.DrawRectangle(Pens.Black,(SIDE_LENGTH*k),0,SIDE_LENGTH-20,SIDE_LENGTH-1); 
					
					g.FillRectangle(new SolidBrush(ChartUtil.GetChartItemColor(7)),(SIDE_LENGTH*k)+2,0+1,SIDE_LENGTH-20-4,SIDE_LENGTH-1-4); 
					//画大标题 
					g.DrawString(dt.Rows[0][3].ToString(),new Font("Tahoma",16,FontStyle.Bold),Brushes.Black,new PointF(5+(k*SIDE_LENGTH),5)); 
					
					//画小标题 
					g.DrawString(dt.Rows[0][4].ToString(),new Font("Tahoma",12),Brushes.Black,new PointF(7+(k*SIDE_LENGTH),35)); 
					
					//画虚线
					for(int bl=4;bl>0;bl--)
					{
						if(highPoint>=99)
						{
							g.DrawString(""+(int)(highPoint/5)*(5-bl),new Font("Tahoma",9),Brushes.Black,new PointF(CHART_LEFT+(k*SIDE_LENGTH)-25,(CHART_HEIGHT/5)*bl+CHART_TOP-7)); 
					
						}
						else
						{
							g.DrawString(""+(highPoint/5)*(5-bl),new Font("Tahoma",9),Brushes.Black,new PointF(CHART_LEFT+(k*SIDE_LENGTH)-25,(CHART_HEIGHT/5)*bl+CHART_TOP-7)); 
						}
						for(int e=CHART_LEFT+(k*SIDE_LENGTH);e<CHART_LEFT+(k*SIDE_LENGTH) + CHART_WIDTH;e=e+20)
						{
							g.DrawLine(new Pen(Color.Black,1),new Point(e,(CHART_HEIGHT/5)*bl+CHART_TOP),new Point(e+10,(CHART_HEIGHT/5)*bl+CHART_TOP)); 
						}
					}
					//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][0]) * 200 / highPoint * 1; 

						barOrigin.Y = CHART_TOP + CHART_HEIGHT - barHeight; 

						g.FillRectangle(new SolidBrush(ChartUtil.GetChartItemColor(i)),barOrigin.X+(k*SIDE_LENGTH),barOrigin.Y,barWidth-40,barHeight); 
						
						barOrigin.X = barOrigin.X + (barWidth * 2)-50; 
					} 
					//设置边 
					g.DrawLine(new Pen(Color.Black,2),new Point(CHART_LEFT+(k*SIDE_LENGTH),CHART_TOP),new Point(CHART_LEFT+(k*SIDE_LENGTH),CHART_TOP + CHART_HEIGHT)); 
					

					g.DrawLine(new Pen(Color.Black,2),new Point(CHART_LEFT+(k*SIDE_LENGTH),CHART_TOP + CHART_HEIGHT),new Point(CHART_LEFT+(k*SIDE_LENGTH) + CHART_WIDTH,CHART_TOP + CHART_HEIGHT)); 
					
					//画图例框和文字 
					g.DrawString("图表说明",new Font("Tahoma",14,FontStyle.Bold),Brushes.Black,new PointF(200+(k*SIDE_LENGTH),300)); 

					//画图例 
					PointF boxOrigin = new PointF(210+(k*SIDE_LENGTH),330); 
					
					PointF textOrigin = new PointF(235+(k*SIDE_LENGTH),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][1].ToString() + " - " + dt.Rows[i][0].ToString(),new Font("Tahoma",10),Brushes.Black,textOrigin); 
						
						boxOrigin.Y += 15; 
						
						textOrigin.Y += 15; 
					} 
					//输出图形 

					PointF textOrigin1=new PointF(50+(k*SIDE_LENGTH),70);
					
					g.DrawString("MAX - "+highPoint,new Font("Tahoma",12),Brushes.Black,textOrigin1);
					
				}
				g.Dispose(); 
				
				return bm; 

			} 
			catch 
			{ 
				return this.badRender(width,height); 
			} 
		} 
	} 
}