vb.net 控制excel画饼状图

我自己写的控件，里面有示例程序，很简单的。不过饼图只设置了12种颜色。。。只能显示12项

创新互联建站网站建设公司，提供网站设计制作、成都做网站，网页设计，建网站，PHP网站建设等专业做网站服务;可快速的进行网站开发网页制作和功能扩展；专业做搜索引擎喜爱的网站，是专业的做网站团队，希望更多企业前来合作!

VB 如何画饼图？

给你一个步骤吧.

设立一个圆心(即定一个点)

再按照用PI转角来画就行了.

最后加上你需要的颜色

用vb.net可以做出饼图吗

Dim MyGraphics As Graphics = Me.PictureBox1.CreateGraphics

Dim MyBrush As New SolidBrush(Color.Red)

Dim MyProportion As Single

Dim MyRect As New Rectangle

Dim MyPoint As New PointF

Dim R As Single

Const PI = 3.1415926

MyGraphics.Clear(Color.White)

Dim MyStartAngel As Double

Dim MySweepAngel As Double

R = Math.Min(Me.PictureBox1.Width, Me.PictureBox1.Height) / 2 - 15

MyPoint.X = Me.PictureBox1.Width / 2

MyPoint.Y = Me.PictureBox1.Height / 2

MyRect.X = MyPoint.X - R

MyRect.Y = MyPoint.Y - R

MyRect.Width = R * 2

MyRect.Height = R * 2

MyStartAngel = 0

MyProportion = Val(TextBox7.Text)

MySweepAngel = MyProportion * 360 / PI

MyBrush.Color = Color.Red

MyGraphics.FillPie(MyBrush, MyRect, MyStartAngel, MySweepAngel)

' MyStartAngel = MyStartAngel + MySweepAngel

MyProportion = 0.75

MySweepAngel = 360 * MyProportion

MyBrush.Color = Color.Blue

MyGraphics.FillPie(MyBrush, MyRect, MyStartAngel, MySweepAngel)

当前名称：vb.net绘制饼图,c#画饼图
标题URL：http://chengdu.cdxwcx.cn/article/dssoiis.html