Articles in this section
Category / Section

How to apply transparent color to WinForms GridGroupingControl?

1 min read

Apply transparent back color

To apply transparent back color to the WinForms Grid Control, you need to create a Derived class that is inherited from the GridGroupingControl. In that derived class, override the OnParentBackColorChanged()and OnPropertyChanged() methods and set the SupportsTransparentBackColor value to true or SetStyle(ControlStyles.SupportsTransparentBackColor, True) .

Overriding the GridGroupingControl:

C#

public class MyGGC : GridGroupingControl
{
    public MyGGC()
    {
        //Sets the SupportsTransparentBackColor value.
        SetStyle(ControlStyles.SupportsTransparentBackColor, true);        
    }
    protected override void OnParentBackColorChanged(EventArgs e)
    {
        base.OnParentBackColorChanged(e);
        //Sets the BackColor to the Grid.
        BackColor = Parent.BackColor;
    }
    protected override void OnBackColorChanged(EventArgs e)
    {
        Console.Out.WriteLine("MyGGC:OnBackColorChanged called");
        base.OnBackColorChanged(e);
    }
    protected override void OnParentChanged(EventArgs e)
    {
        Console.Out.WriteLine("MyGGC:OnParentChanged called");
        base.OnParentChanged(e);
        BackColor = Parent.BackColor;
    }
}

VB

Public Class MyGGC
Inherits GridGroupingControl
   Public Sub New()
       'Sets the BackColor to the Grid.
       SetStyle(ControlStyles.SupportsTransparentBackColor, True)
   End Sub
   Protected Overrides Sub OnParentBackColorChanged(ByVal e As EventArgs)
       MyBase.OnParentBackColorChanged(e)
       'Sets the SupportsTransparentBackColor value.
       BackColor = Parent.BackColor
   End Sub
   Protected Overrides Sub OnBackColorChanged(ByVal e As EventArgs)
       Console.Out.WriteLine("MyGGC:OnBackColorChanged called")
       MyBase.OnBackColorChanged(e)
   End Sub
   Protected Overrides Sub OnParentChanged(ByVal e As EventArgs)
       Console.Out.WriteLine("MyGGC:OnParentChanged called")
       MyBase.OnParentChanged(e)
       BackColor = Parent.BackColor
   End Sub
End Class

Adding custom GridGroupingControl:

In the form InitializeComponent() method, create an instance for the derived GridGroupingControl.

C#

private MyGGC gridGroupingControl1;
//In the InitializeComponets().
this.gridGroupingControl1 = new MyGGC();

VB

Private gridGroupingControl1 As MyGGC
'In the InitializeComponets()
Me.gridGroupingControl1 = New MyGGC()

Set the TransparentBackColor:

C#

//Sets the BackColor to the Form.
this.BackColor = Color.LightBlue;
//Allows Transparent Color to the GGC.
this.gridGroupingControl1.TableControl.SupportsTransparentBackColor = true;
this.gridGroupingControl1.TableControl.BackColor = Color.Transparent;
this.gridGroupingControl1.TableModel.Properties.BackgroundColor = Color.Transparent;

VB

'Sets the BackColor to the Form.
Me.BackColor = Color.LightBlue
'Sets Transparent Back Color to the GGC.
Me.gridGroupingControl1.TableControl.SupportsTransparentBackColor = True
Me.gridGroupingControl1.TableControl.BackColor = Color.Transparent
Me.gridGroupingControl1.TableModel.Properties.BackgroundColor = Color.Transparent

Show transparent color applied to the in WinForms GridGroupingControl

Figure 1: Transparent color applied to the GGC

Samples:

C#: TransparentColorGGC-CS.zip

VB: TransparentColorGGC-VB.zip



Conclusion

I hope you enjoyed learning on how to apply transparent color to WinForms GridGroupingControl.

You can refer to our WinForms GridGroupingControl feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications.

For current customers, you can check out our components from the License and Downloads page. If you are new to Syncfusion, you can try our 30-day free trial to check out our other controls.

If you have any queries or require clarifications, please let us know in the comments section below. You can also contact us through our support forumsDirect-Trac, or feedback portal. We are always happy to assist you!

Did you find this information helpful?
Yes
No
Help us improve this page
Please provide feedback or comments
Comments (0)
Please sign in to leave a comment
Access denied
Access denied