WPF C#

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Row GridSplitter Example">
        
            
                
                    
                    
                    
                

                
                    
                    
                    
                

                                      Background="Red"/>
                                      Background="Black"/>
                                      Background="Tan"/>
                                      Background="Tan"/>
                                      Background="Brown"/>
                                      Background="Blue"/>
                                      Background="Red"/>
                                      Background="Blue"/>
                                      Background="Tan"/>
                                        Grid.ColumnSpan="3" 
                        HorizontalAlignment="Stretch" 
                        VerticalAlignment="Top"
                        Background="Black" 
                        ShowsPreview="true"
                        ResizeDirection="Columns"
                        Height="5"/>
                                        Grid.RowSpan="3" 
                        HorizontalAlignment="Left" 
                        VerticalAlignment="Stretch"
                        Background="White" 
                        ShowsPreview="true"
                        Width="5"/>