codice:
Public Class DataGridColoredTextBoxColumn 
	
     Inherits DataGridTextBoxColumn 
	

     Public Sub New() 
	
     End Sub 
	

     Protected Overloads Overrides Sub Paint(ByVal g As Graphics, ByVal bounds As Rectangle, ByVal source As CurrencyManager, ByVal rowNum As Integer, ByVal backBrush As Brush, ByVal foreBrush As Brush, ByVal alignToRight As Boolean) 
	

     ' the idea is to conditionally set the foreBrush and/or backbrush 
	
     ' depending upon some crireria on the cell value 
	
     ' Here, we color anything that begins with a letter higher than 'F' 
	
     Try 
	
          Dim o As Object 
	
          o = Me.GetColumnValueAtRow(source, rowNum) 
	
          If (Not (o) Is Nothing) Then 
	
               Dim c As Char 
	
               c = CType(o, String).Substring(0, 1) 
	
               If (c > "F") Then 
	
                     ' could be as simple as 
	
                    ' backBrush = new SolidBrush(Color.Pink); 
	
                    ' or something fancier... 
	
                    backBrush = New LinearGradientBrush(bounds, Color.FromArgb(255, 200, 200), Color.FromArgb(128, 20, 20), LinearGradientMode.BackwardDiagonal) 
	
                    foreBrush = New SolidBrush(Color.White) 
	
               End If 
	
          End If 
	
          Catch ex As Exception 
	
               ' empty catch 
	
          Finally 
	
               ' make sure the base class gets called to do the drawing with 
	
                ' the possibly changed brushes 
	
               MyBase.Paint(g, bounds, source, rowNum, backBrush, foreBrush, alignToRight) 
	
          End Try 
	

     End Sub 
	
End Class
Ho trovato questo. Ma nn so applicarlo, nel senso che questo viene usato alla creazione della riga, invece nel mio caso, la riga è già creata. Come posso fare?