vb.net 如何由已知數(shù)據(jù)生成chart圖表

這個(gè)說(shuō)起來(lái)有點(diǎn)小復(fù)雜，建議你找專門的文章學(xué)習(xí)。

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比如：

VB.net中如何畫(huà)圖？

VB.net與VB不同。

VB.net已經(jīng)有專門繪圖的類。

可以定義筆刷然后用Drawing類中的方法繪制。

Private Sub DrawEllipse()

Dim myPen As New System.Drawing.Pen(System.Drawing.Color.Red)

Dim formGraphics as System.Drawing.Graphics

formGraphics = Me.CreateGraphics()

formGraphics.DrawEllipse(myPen, New Rectangle(0,0,200,300))

myPen.Dispose()

formGraphics.Dispose()

End Sub

Private Sub DrawRectangle()

Dim myPen As New System.Drawing.Pen(System.Drawing.Color.Red)

Dim formGraphics as System.Drawing.Graphics

formGraphics = Me.CreateGraphics()

formGraphics.DrawRectangle(myPen, New Rectangle(0,0,200,300))

myPen.Dispose()

formGraphics.Dispose()

End Sub

vb.net繪制曲線圖

。net ?其實(shí)還是很好繪制圖形的

你可以看下?Graphics ?類

Dim d As New Bitmap(Me.Width, Me.Height) ?‘一個(gè)圖片吧

? Dim g As Graphics = Graphics.FromImage(d)’繪制 ?準(zhǔn)備在這個(gè)圖片是進(jìn)行

然后 ?就是你繪制的東西了

線 就是 ??g.DrawLine()

圓 弧度 ?就用 ?g.DrawArc(Pens.Black, New Rectangle(0, 0, 400, 200), 0, 360)

復(fù)雜的就是 ? ? ?g.DrawBezier()

等 ?如果你用的是 VS的 ?編譯 ?上面都有詳細(xì)的參數(shù)說(shuō)明

Dim?d?As?New?Bitmap(Me.Width,?Me.Height)

Dim?g?As?Graphics?=?Graphics.FromImage(d)

g.DrawArc(Pens.Black,?New?Rectangle(0,?0,?200,?200),?0,?360)

g.DrawLine(Pens.Red,?New?Point(0,?0),?New?Point(200,?200))

g.DrawLines(Pens.Green,?New?Point()?{New?Point(0,?0),?New?Point(50,?40),?New?Point(50,?80),?New?Point(90,?70),?New?Point(100,?400)})

g.DrawBezier(Pens.Yellow,?New?Point(0,?100),?New?Point(0,?0),?New?Point(200,?0），?New?Point(200,?200))

g.Dispose()

Me.BackgroundImage?=?d

用VB.NET繪制GDI圖形

下面的例子通過(guò)重載Form 窗體的OnPaint()方法繪制GDI圖形Protected Overrides Sub onpaint(ByVal e As System Windows Forms PaintEventArgs)注釋 /////////////繪制任意直線Dim g As Graphics = e GraphicsDim mypen As Pen = New Pen(Color Red )g DrawLine(mypen )注釋 /////////////繪制矩形(任意直線構(gòu)成的封閉圖形)Dim point As PointF = New PointF( F F)Dim point As PointF = New PointF( F F)Dim point As PointF = New PointF( F F)Dim point As PointF = New PointF( F F)Dim curvepoints As PointF() = {point point point point }g DrawPolygon(New Pen(Color Blue ) curvepoints)注釋 ////////////文本表示Dim FFamily As FontFamily = New FontFamily( Arial )Dim font As Font = New Font(FFamily FontStyle Bold FontStyle Italic GraphicsUnit Pixel)Dim text As String = I love you! Dim solidbrush As SolidBrush = New SolidBrush(Color Red)Dim pr As PointF = New PointF( )e Graphics DrawString(text font solidbrush pr)注釋 ////////////平面繪制Dim rec As RectangleF = New RectangleF( )g DrawPie(mypen rec )注釋 ///////////封閉圖形 應(yīng)該是個(gè)圓g DrawClosedCurve(mypen curvepoints Drawing Drawing D FillMode Alternate)注釋 ///////////大家自己試試看吧g DrawArc(mypen )g DrawCurve(mypen curvepoints)g DrawBezier(mypen )g DrawBeziers(mypen curvepoints)注釋 //////////這可是一個(gè)圓Dim rec As RectangleF = New RectangleF( )g DrawEllipse(mypen rec )注釋 //////////這是一個(gè)橢圓Dim rec As RectangleF = New RectangleF( )g DrawEllipse(mypen rec )End Sub 這些是我自己試驗(yàn)出來(lái)的 當(dāng)然了 還有好多 我只是開(kāi)了一個(gè)頭 大家要是發(fā)現(xiàn)什么好東東 別忘了通知一下 ） lishixinzhi/Article/program/net/201311/11800