Changing the color of GroupBox edge in VB.net? How to do this?

Question

_{Thursday, December 11, 2014 2:58 PM}

How to change the border styler of GroupBox?

All replies (5)

_{Thursday, December 11, 2014 3:18 PM ✅Answered}

Hello,

Look at the code in the following thread

EDIT the following link has a solution, a class project with the GroupBox and one forms project to test.

Please remember to mark the replies as answers if they help and unmark them if they provide no help, this will help others who are looking for solutions to the same or similar problem.

_{Thursday, December 11, 2014 3:17 PM}

The below code is from Zhi-Xin Ye from this thread https://social.msdn.microsoft.com/Forums/windows/en-US/cfd34dd1-b6e5-4b56-9901-0dc3d2ca5788/changing-border-color-of-groupbox

Public Class myGroupBox
    Inherits GroupBox
    
    Private borderColor As Color
    
    Public Sub New()
        MyBase.New
        Me.borderColor = Color.Black
    End Sub
    
    Public Property BorderColor As Color
        Get
            Return Me.borderColor
        End Get
        Set
            Me.borderColor = value
        End Set
    End Property
    
    Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
        Dim tSize As Size = TextRenderer.MeasureText(Me.Text, Me.Font)
        Dim borderRect As Rectangle = e.ClipRectangle
        borderRect.Y = (borderRect.Y  _
                    + (tSize.Height / 2))
        borderRect.Height = (borderRect.Height  _
                    - (tSize.Height / 2))
        ControlPaint.DrawBorder(e.Graphics, borderRect, Me.borderColor, ButtonBorderStyle.Solid)
        Dim textRect As Rectangle = e.ClipRectangle
        textRect.X = (textRect.X + 6)
        textRect.Width = tSize.Width
        textRect.Height = tSize.Height
        e.Graphics.FillRectangle(New SolidBrush(Me.BackColor), textRect)
        e.Graphics.DrawString(Me.Text, Me.Font, New SolidBrush(Me.ForeColor), textRect)
    End Sub
End Class

_{Thursday, December 11, 2014 3:23 PM}

If you check properties exposed in the groupbox class:

http://msdn.microsoft.com/en-us/library/system.windows.forms.groupbox(v=vs.110).aspx?cs-save-lang=1&cs-lang=vb#code-snippet-1

you'll see that there is no border style of border color property.

Your only option would be to extend the groupbox class yourself and define a border color property, as in this thread:

https://social.msdn.microsoft.com/Forums/vstudio/en-US/cfd34dd1-b6e5-4b56-9901-0dc3d2ca5788/changing-border-color-of-groupbox?forum=winforms

_{Thursday, December 11, 2014 5:36 PM}

Hi,

You can check out my custom GroupBoxEx class at the link below. You can change the BorderColor among a few other properties. 8)

Custom GroupBox Class (GroupBoxEx)

If you say it can`t be done then i`ll try it

_{Sunday, December 14, 2014 3:55 PM}