aspnet GDI+.docx
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ASP.NET画图系列,今天要实现的是Curve图,如果各位朋友有什么不明白的可以留言或Email给我，我的Email:
gfreesky@
废话不多说，先看下效果：
页面部分，还是和Pie一样
Image ID="Image1" runat="server" />
cs代码：
using System.Drawing; //Bitmap
using System.Drawing.Imaging; //ImageFormat
using SkyNet.Chart;
using SkyNet.OA.OAWebUtility;
public partial class SkyNetChart_MyCurve :
System.Web.UI.Page
{
protected void Page_Load（object sender, EventArgs e）
{
if （!
IsPostBack）
{
InitChart（）;
}
}
private void InitChart（）
{
Curve curveImg = new Curve（）; //定义一个画图类实例
curveImg.Title = "2008年销售情况统计表";
curveImg.Width = 900;
curveImg.Height = 500;
curveImg.TextColor = Color.Red;
string imgPath = "../ChartImages/" + "MyCurve.jpg";
string savePath = Server.MapPath（imgPath）;
ChartHelper.CreateChartByCurve（curveImg, imgPath, ImageFormat.Jpeg）;
this.Image1.ImageUrl = imgPath;
}
}
上面有不明白的地方，请参照ASP.NET画图系列之实现Pie图（圆饼图）
接下来是Curve类
using System.Drawing;
using System.Data;
namespace SkyNet.Chart
{
public class Curve
{
#region 私有字段
private Graphics objGraphics; //Graphics 类提供将对象绘制到显示设备的方法
private Bitmap objBitmap; //位图对象
private int m_Width = 900; //图像宽度
private int m_Height = 500; //图像高度
private float m_XSlice = 50; //X轴刻度宽度
private float m_YSlice = 50; //Y轴刻度宽度
private float m_YSliceValue = 20; //Y轴刻度的数值宽度
private float m_YSliceBegin = 0; //Y轴刻度开始值
private float m_Tension = 0.5f;
private string m_Title = "××公司销售情况曲线图"; //Title
private string m_Unit = "万元"; //单位
private string m_XAxisText = "月份"; //X轴说明文字
private string m_YAxisText = "万元"; //Y轴说明文字
private string[] m_Keys = new string[] { "一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "十二月" }; //键
private float[] m_Values = new float[] { 20.0f, 30.0f, 50.0f, 55.4f, 21.6f, 12.8f, 99.5f, 36.4f, 78.2f, 56.4f, 45.8f, 66.5f }; //值
private Color m_BgColor = Color.Snow; //背景
private Color m_TextColor = Color.Black; //文字颜色
private Color m_BorderColor = Color.Black; //整体边框颜色
private Color m_AxisColor = Color.Black; //轴线颜色
private Color m_AxisTextColor = Color.Black; //轴说明文字颜色
private Color m_SliceTextColor = Color.Black; //刻度文字颜色
private Color m_SliceColor = Color.Black; //刻度颜色
private Color m_CurveColor = Color.Red; //曲线颜色
private DataSet m_ds;
#endregion
#region 属性
public DataSet DS
{
get { return m_ds; }
set { m_ds = value; }
}
public int Width
{
set
{
if （value < 300）
{
m_Width = 300;
}
else
{
m_Width = value;
}
}
get
{
return m_Width;
}
}
public int Height
{
set
{
if （value < 300）
{
m_Height = 300;
}
else
{
m_Height = value;
}
}
get
{
return m_Height;
}
}
public float XSlice
{
set
{
m_XSlice = value;
}
get
{
return m_XSlice;
}
}
public float YSlice
{
set
{
m_YSlice = value;
}
get
{
return m_YSlice;
}
}
public float YSliceValue
{
set
{
m_YSliceValue = value;
}
get
{
return m_YSliceValue;
}
}
public float YSliceBegin
{
set
{
m_YSliceBegin = value;
}
get
{
return m_YSliceBegin;
}
}
public float Tension
{
set
{
if （value < 0.0f && value > 1.0f）
{
m_Tension = 0.5f;
}
else
{
m_Tension = value;
}
}
get
{
return m_Tension;
}
}
public string Title
{
set
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