Solved

Vertical line in datagridview

Posted on 2009-04-04
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Last Modified: 2012-05-06
I got the horizontal line working and tried the same technique to draw a different color vertical line between two columns but it doesn't work.

Try
            Dim g As Graphics = DataGridView1.CreateGraphics()
            Dim p As Pen = New Pen(Color.Black)
            Dim rect1 As Rectangle, rect2 As Rectangle
            rect1 = DataGridView1.GetCellDisplayRectangle(16, 0, True)
            rect2 = DataGridView1.GetCellDisplayRectangle(16, DataGridView1.Rows.Count - 1, True)
            Dim linefrom As Point, lineto As Point
            linefrom.X = rect1.Left
            linefrom.Y = rect1.Top + 1
            lineto.X = rect2.Left
            lineto.Y = rect2.Bottom + 1
            g.DrawLine(p, linefrom, lineto)
        Catch ex As Exception
            errlog.WriteError("Error in paint lines: " & ex.Message, "PaintLines")
        End Try
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Question by:ddepuemd
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4 Comments
 
LVL 96

Expert Comment

by:Bob Learned
Comment Utility
It might be easier if you handle the CellPainting event, and check to see if the cell's ColumnIndex is the one that you need, and then you give the illusion that you are drawing a single continuous line...
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Author Comment

by:ddepuemd
Comment Utility
I'm not sure I understand what you mean.  How could I do that?
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Accepted Solution

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Bob Learned earned 500 total points
Comment Utility
Example:


    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
 

        Me.dgv.RowTemplate.Height = Me.dgv.ClientSize.Height / 3
 

        Me.dgv.RowCount = 3

        Me.dgv.ColumnCount = 3

        Me.dgv.RowHeadersVisible = False

        Me.dgv.ColumnHeadersVisible = False
 

        Me.dgv.Columns(0).Width = Me.dgv.ClientSize.Width / 3

        Me.dgv.Columns(1).Width = Me.dgv.Columns(0).Width

        Me.dgv.Columns(2).Width = Me.dgv.Columns(0).Width
 

        Me.dgv.ScrollBars = ScrollBars.None

        Me.dgv.DefaultCellStyle.SelectionBackColor = Me.dgv.DefaultCellStyle.BackColor

        Me.dgv.DefaultCellStyle.SelectionForeColor = Me.dgv.DefaultCellStyle.ForeColor
 

        AddHandler Me.dgv.CellPainting, AddressOf OnCellPainting
 

    End Sub
 

    Private Sub OnCellPainting(ByVal sender As Object, ByVal e As DataGridViewCellPaintingEventArgs)
 

        If e.ColumnIndex = 1 Then

            Dim x As Integer = e.CellBounds.Right - 3

            Dim y1 As Integer = e.CellBounds.Top

            Dim y2 As Integer = e.CellBounds.Bottom
 

            e.PaintBackground(e.ClipBounds, e.State = DataGridViewElementStates.Selected)

            e.PaintContent(e.ClipBounds)

            e.Graphics.DrawLine(Pens.Red, x, y1, x, y2)
 

            e.Handled = True
 

        End If
 

    End Sub

Open in new window

DataGridView----Vertical-Line.png
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Author Closing Comment

by:ddepuemd
Comment Utility
thank you
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