WinForms Data Grid - Update the row style immediately after changing a value in the cell editor

C#
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using DevExpress.XtraEditors.Repository;
using DevExpress.XtraGrid.Views.Grid;
using DevExpress.Utils;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        Random r = new Random();
        public int GetRandomValue()
        {
            return r.Next(100) + 50;
        }
        private DataTable CreateTable(int RowCount)
        {
            DataTable tbl = new DataTable();
            tbl.Columns.Add("Name", typeof(string));
            tbl.Columns.Add("UseStyles", typeof(bool));
            tbl.Columns.Add("R", typeof(int));
            tbl.Columns.Add("G", typeof(int));
            tbl.Columns.Add("B", typeof(int));
            for (int i = 0; i < RowCount; i++)
                tbl.Rows.Add(new object[] { String.Format("Name{0}", i), false, GetRandomValue(), GetRandomValue(), GetRandomValue() });
            return tbl;
        }


        public Form1()
        {
            AppearanceObject.DefaultFont = new Font(AppearanceObject.DefaultFont.FontFamily, 14, FontStyle.Bold);
            InitializeComponent();
            gridControl1.DataSource = CreateTable(5);
            RepositoryItemCheckEdit riCheckEdit = new RepositoryItemCheckEdit();
            gridView1.Columns["UseStyles"].ColumnEdit = riCheckEdit;
            RepositoryItemTrackBar riTrackBar = new RepositoryItemTrackBar();
            riTrackBar.Maximum = 255;
            gridView1.Columns["R"].ColumnEdit = riTrackBar;
            gridView1.Columns["G"].ColumnEdit = riTrackBar;
            gridView1.Columns["B"].ColumnEdit = riTrackBar;
            riCheckEdit.EditValueChanged += OnEditValueChanged;
            riTrackBar.EditValueChanged += OnEditValueChanged;
            gridView1.RowCellStyle += new RowCellStyleEventHandler(gridView1_RowCellStyle);
        }

        void gridView1_RowCellStyle(object sender, RowCellStyleEventArgs e)
        {
            if (!true.Equals(gridView1.GetRowCellValue(e.RowHandle, "UseStyles")))
                return;
            e.Appearance.BackColor = GetRowBackColor(e.RowHandle);
        }

        void OnEditValueChanged(object sender, EventArgs e)
        {
            gridView1.PostEditor();
        }

        private Color GetRowBackColor(int rowHandle)
        {
            return Color.FromArgb(GetColorValue(rowHandle, "R"), GetColorValue(rowHandle, "G"), GetColorValue(rowHandle, "B"));
        }
        private int GetColorValue(int rowHandle, string fieldName)
        {
            return (int)gridView1.GetRowCellValue(rowHandle, fieldName);
        }
    }
}

Visual Basic
Imports System
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Windows.Forms
Imports DevExpress.XtraEditors.Repository
Imports DevExpress.XtraGrid.Views.Grid
Imports DevExpress.Utils

Namespace WindowsApplication1

    Public Partial Class Form1
        Inherits Form

        Private r As Random = New Random()

        Public Function GetRandomValue() As Integer
            Return r.Next(100) + 50
        End Function

        Private Function CreateTable(ByVal RowCount As Integer) As DataTable
            Dim tbl As DataTable = New DataTable()
            tbl.Columns.Add("Name", GetType(String))
            tbl.Columns.Add("UseStyles", GetType(Boolean))
            tbl.Columns.Add("R", GetType(Integer))
            tbl.Columns.Add("G", GetType(Integer))
            tbl.Columns.Add("B", GetType(Integer))
            For i As Integer = 0 To RowCount - 1
                tbl.Rows.Add(New Object() {String.Format("Name{0}", i), False, GetRandomValue(), GetRandomValue(), GetRandomValue()})
            Next

            Return tbl
        End Function

        Public Sub New()
            AppearanceObject.DefaultFont = New Font(AppearanceObject.DefaultFont.FontFamily, 14, FontStyle.Bold)
            InitializeComponent()
            gridControl1.DataSource = CreateTable(5)
            Dim riCheckEdit As RepositoryItemCheckEdit = New RepositoryItemCheckEdit()
            gridView1.Columns("UseStyles").ColumnEdit = riCheckEdit
            Dim riTrackBar As RepositoryItemTrackBar = New RepositoryItemTrackBar()
            riTrackBar.Maximum = 255
            gridView1.Columns("R").ColumnEdit = riTrackBar
            gridView1.Columns("G").ColumnEdit = riTrackBar
            gridView1.Columns("B").ColumnEdit = riTrackBar
            AddHandler riCheckEdit.EditValueChanged, AddressOf OnEditValueChanged
            AddHandler riTrackBar.EditValueChanged, AddressOf OnEditValueChanged
            AddHandler gridView1.RowCellStyle, New RowCellStyleEventHandler(AddressOf gridView1_RowCellStyle)
        End Sub

        Private Sub gridView1_RowCellStyle(ByVal sender As Object, ByVal e As RowCellStyleEventArgs)
            If Not True.Equals(gridView1.GetRowCellValue(e.RowHandle, "UseStyles")) Then Return
            e.Appearance.BackColor = GetRowBackColor(e.RowHandle)
        End Sub

        Private Sub OnEditValueChanged(ByVal sender As Object, ByVal e As EventArgs)
            gridView1.PostEditor()
        End Sub

        Private Function GetRowBackColor(ByVal rowHandle As Integer) As Color
            Return Color.FromArgb(GetColorValue(rowHandle, "R"), GetColorValue(rowHandle, "G"), GetColorValue(rowHandle, "B"))
        End Function

        Private Function GetColorValue(ByVal rowHandle As Integer, ByVal fieldName As String) As Integer
            Return CInt(gridView1.GetRowCellValue(rowHandle, fieldName))
        End Function
    End Class
End Namespace