How to prevent the blackout selection in WinForms GridGroupingControl?

Selection backcolor

By default, the selected rows, columns, or cells are highlighted with AlphaBlend color. The Selection Backcolor is highlighted with Black color, by changing the AllowSelection property to None. The following image illustrates the exact issue.

As per the architecture, the Selection Backcolor is removed from the graphics when changing AllowSelection to None. This article provides the information about how to resolve it.

Solution

To resolve the Selection Backcolor issue, the GridSelectionFlags.AlphaBlend property can be used along with the GridSelectionFlags.None property as GridSelectionFlags.None | GridSelectionFlags.AlphaBlend while setting the AllowSelection to None.

C#

private void noneAllowSelection_CheckedChanged(object sender, EventArgs e)
{
   //Sets the AllowSelection property to None
   this.gridGroupingControl1.TableOptions.AllowSelection = Syncfusion.Windows.Forms.Grid.GridSelectionFlags.None | Syncfusion.Windows.Forms.Grid.GridSelectionFlags.AlphaBlend;
}

private void anyAllowSelection_CheckedChanged(object sender, EventArgs e)
{
   //Sets the AllowSelection property to Any
   this.gridGroupingControl1.TableOptions.AllowSelection = Syncfusion.Windows.Forms.Grid.GridSelectionFlags.Any;
}

VB

Private Sub noneAllowSelection_CheckedChanged(ByVal sender As Object, ByVal e As EventArgs) Handles noneAllowSelection.CheckedChanged
   'Sets the AllowSelection property to None
   Me.gridGroupingControl1.TableOptions.AllowSelection =   Syncfusion.Windows.Forms.Grid.GridSelectionFlags.None Or Syncfusion.Windows.Forms.Grid.GridSelectionFlags.AlphaBlend
End Sub

Private Sub anyAllowSelection_CheckedChanged(ByVal sender As Object, ByVal e As EventArgs) Handles anyAllowSelection.CheckedChanged
   'Sets the AllowSelection property to Any
   Me.gridGroupingControl1.TableOptions.AllowSelection = Syncfusion.Windows.Forms.Grid.GridSelectionFlags.Any
End Sub 

The following image illustrates the Selection Backcolor as a Default Selection Backcolor.

Samples:

C#: Selection_Backcolor_CS

VB: Selection_Backcolor_VB

Conclusion

I hope you enjoyed learning about how to prevent the blackout selection in the GridGroupingControl.

You can refer to our WinForms GridGroupingControl feature tour page to know about its other groundbreaking feature representations and WinForms GridGroupingControl documentation, and how to quickly get started for configuration specifications. You can also explore our WinForms GridGroupingControl example to understand how to create and manipulate data.

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