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V. Hutabalian's Blog INPUT LISTBOX Vs PLOTTING (X,Y) Vs PICTUREBOX
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Entry Data Pada ListBox dengan 2 masukan X dan Y '' Berbagi ilmu
Sensasi Kepuasan Tersendiri '' Programming by: Verynandus
Hutabalian '' Publish to V. Hutabalian's Blog 7 Mei 2010
''+++++++++++++++++++++++========================++++++++++++++++++++++++'Imports
System.Drawing.Drawing2DPublic Class Form1Dim LeftMargin As Integer
= 35Dim RightMargin As Integer = 15Dim BaseMargin As Integer =
35Dim TopMargin As Integer = 10Dim VertLineLength As IntegerDim
BaseLineLength As IntegerDim LineWidth As DoubleDim g As
GraphicsDim bmap As BitmapPrivate Sub TextBox1_Validated(ByVal
sender As Object, ByVal e As System.EventArgs)If
IsNumeric(TextBox1.Text) = False ThenMsgBox("Harus Karakter
Angaka", MsgBoxStyle.Exclamation)End IfEnd SubPrivate Sub
Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.ClickIf ListBox3.Text = ""
ThenMsgBox("Pilih Data Yang Terlebih dulu di Inputkan",
MsgBoxStyle.Exclamation)End IfIf ListBox3.Text = "Data X" ThenIf
TextBox1.Text = "" ThenMsgBox("Masukkan Data
X")ElseListBox1.Items.Add(TextBox1.Text)TextBox1.Focus()End IfEnd
IfIf ListBox3.Text = "Data Y" ThenIf TextBox1.Text = ""
ThenMsgBox("Masukkan Data
Y")ElseListBox2.Items.Add(TextBox1.Text)TextBox1.Focus()End IfEnd
IfEnd SubPrivate Sub DrawOutline()bmap = New
Bitmap(PBLineChart.Width, PBLineChart.Height,
PBLineChart.CreateGraphics)g = Graphics.FromImage(bmap)Dim
StartPoint As New Point(LeftMargin, PBLineChart.Height -
BaseMargin)Dim EndPoint As New Point(LeftMargin, TopMargin)Dim
LinePen As New Pen(Color.Red, 2)g.DrawLine(LinePen, StartPoint,
EndPoint)Dim VertLineLength As Integer = PBLineChart.Height -
(BaseMargin + TopMargin)Dim VertGap As Integer =
CInt(VertLineLength / 10)Dim TickSP As New Point(LeftMargin - 5,
StartPoint.Y - VertGap)Dim TickEP As New Point(LeftMargin,
StartPoint.Y - VertGap)Dim ValueFont As New Font("Arial", 8,
FontStyle.Regular)For i As Integer = 1 To 10g.DrawLine(New
Pen(Color.Black), TickSP, TickEP)g.DrawString(CStr(i * 10),
ValueFont, Brushes.Red, 2, TickSP.Y - 5)TickSP.Y -= VertGapTickEP.Y
-= VertGapNextg.DrawLine(LinePen, LeftMargin, PBLineChart.Height -
BaseMargin, PBLineChart.Width - RightMargin, PBLineChart.Height -
BaseMargin)End SubPrivate Sub btnDraw_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
btnDraw.ClickDrawOutline()DrawHorizontalLines()DrawVerticalGridLines()DrawTheLine()ShowMonths()FinalDisplay()End
SubPrivate Sub DrawTheLine()Dim MyPath As New GraphicsPathDim MyPen
As Pen = New Pen(Color.Blue, 3)g.DrawPath(MyPen, MyPath)Dim
VertScale As DoubleDim VertLineLength As Integer =
PBLineChart.Height - (BaseMargin + TopMargin)Dim XPosStart As
Integer = CInt(LeftMargin + 30)VertScale = VertLineLength / 100Dim
XPosEnd As Integer = CInt(XPosStart + LineWidth)Dim
s(ListBox2.Items.Count) As StringDim al As New
ArrayListListBox2.Items.CopyTo(s, 0)al = New
ArrayList(s)Me.ListBox2.DataSource = alDim YPosStart As Integer =
CInt(s(0) * VertScale)Dim YPosEnd As Integer = CInt(s(1) *
VertScale)MyPath.AddEllipse(XPosStart - 2, YPosStart - 2, 4,
4)MyPath.AddLine(XPosStart, YPosStart, XPosEnd, YPosEnd)For i As
Integer = 1 To UBound(s) - 2XPosStart = XPosEndXPosEnd =
CInt(XPosStart + LineWidth)YPosStart = YPosEndYPosEnd = CInt(s(i +
1) * VertScale)MyPath.AddEllipse(XPosStart - 2, YPosStart - 2, 4,
4)MyPath.AddLine(XPosStart, YPosStart, XPosEnd,
YPosEnd)NextMyPath.AddEllipse(XPosEnd - 2, YPosEnd - 2, 4,
4)g.RotateTransform(180)g.ScaleTransform(-1,
1)g.TranslateTransform(0, VertLineLength + 10,
MatrixOrder.Append)g.DrawPath(MyPen, MyPath)g.ResetTransform()End
SubPrivate Sub FinalDisplay()PBLineChart.Image = bmapg.Dispose()End
SubPrivate Sub ShowMonths()Dim TextStartX As Integer =
CInt(LeftMargin + 18)Dim TextBrsh As Brush = New
SolidBrush(Color.Red)Dim TextFont As New Font("Arial", 10,
FontStyle.Regular)Dim s1(ListBox1.Items.Count) As StringDim a2 As
New ArrayListListBox1.Items.CopyTo(s1, 0)a2 = New
ArrayList(s1)Me.ListBox1.DataSource = a2For i As Integer = 1 To
s1.Length- 1g.DrawString(s1(i - 1), TextFont, TextBrsh, TextStartX,
_CInt(PBLineChart.Height - (BaseMargin - 4)))TextStartX +=
CInt(LineWidth)NextEnd SubPrivate Sub DrawVerticalGridLines()Dim
ThinPen As New Pen(Color.LightGreen, 2)Dim StartPoint As New
Point(LeftMargin, PBLineChart.Height - BaseMargin)Dim EndPoint As
New Point(LeftMargin, TopMargin)Dim LinePen As New Pen(Color.Red,
2)Dim s(ListBox2.Items.Count) As StringDim s1(ListBox1.Items.Count)
As StringDim al As New ArrayListDim a2 As New
ArrayListListBox2.Items.CopyTo(s, 0)ListBox1.Items.CopyTo(s1, 0)al
= New ArrayList(s)a2 = New ArrayList(s1)Me.ListBox2.DataSource =
alMe.ListBox1.DataSource = a2g.DrawLine(LinePen, StartPoint,
EndPoint)BaseLineLength = PBLineChart.Width - (LeftMargin +
RightMargin)LineWidth = (BaseLineLength / s.Length - 1)Dim
LineStartX As Integer = CInt(LeftMargin + 30)For i As Integer = 1
To s1.Length - 1g.DrawLine(ThinPen, LineStartX, TopMargin,
LineStartX, PBLineChart.Height - (BaseMargin + 4))LineStartX +=
CInt(LineWidth)NextThinPen.Dispose()End SubPrivate Sub
DrawHorizontalLines()Dim VertLineLength As Integer =
PBLineChart.Height - (BaseMargin + TopMargin)Dim VertGap As Integer
= CInt(VertLineLength / 10)Dim StartPoint As New Point(LeftMargin +
3, PBLineChart.Height - BaseMargin)Dim EndPoint As New
Point(PBLineChart.Width, PBLineChart.Height - BaseMargin)Dim
LineStart As New Point(StartPoint.X, StartPoint.Y - VertGap)Dim
LineEnd As New Point(EndPoint.X, StartPoint.Y - VertGap)Dim ThinPen
As New Pen(Color.LightGreen, 3)For i As Integer = 1 To
10g.DrawLine(ThinPen, LineStart, LineEnd)LineStart.Y -=
VertGapLineEnd.Y -= VertGapNextThinPen.Dispose()End SubPrivate Sub
PBLineChart_Paint(ByVal sender As Object, ByVal e As
System.Windows.Forms.PaintEventArgs) Handles PBLineChart.PaintDim
ix As Integer = PBLineChart.WidthDim iy As Integer =
PBLineChart.Heighte.Graphics.DrawString("Coordinat-Y", New
Font("Lucida Handwriting", 10, FontStyle.Regular),
Brushes.Goldenrod, iy - 360, 6)e.Graphics.DrawString("Coordinat-X",
New Font("Lucida Handwriting", 10, FontStyle.Regular),
Brushes.Goldenrod, iy + 20, 370)e.Graphics.DrawString("V.
HUTABALIAN'S Blog", New Font("Lucida Handwriting", 10,
FontStyle.Regular), Brushes.Goldenrod, iy - 40,
6)e.Graphics.DrawString("7 Mei 2010", New Font("Lucida
Handwriting", 10, FontStyle.Regular), Brushes.Goldenrod, iy - 35,
20)End SubEnd Class
