<Window  
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="WpfApplication1.Window1"
    Title="ColumnDefinitions Sample">
    <Border BorderBrush="Black" Background="White" BorderThickness="2">
  <DockPanel Margin="10,0,0,0">
    <TextBlock FontSize="20" FontWeight="Bold" DockPanel.Dock="Top">Grid Column and Row Collections</TextBlock>
        <Grid DockPanel.Dock="Top" HorizontalAlignment="Left" Name="grid1" ShowGridLines="true" Width="625" Height="400">
          <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
          </Grid.ColumnDefinitions>
          <Grid.RowDefinitions>
          <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
          </Grid.RowDefinitions>
        </Grid>

        <StackPanel HorizontalAlignment="Left" Orientation="Horizontal" Width="625" DockPanel.Dock="Top">
            <Button Width="125" Click="clearCol">Clear All Columns</Button>
        </StackPanel>    

  </DockPanel>
  </Border>  
</Window>

//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        RowDefinition rowDef1;
        ColumnDefinition colDef1;

        private void clearCol(object sender, RoutedEventArgs e)
        {
            grid1.ColumnDefinitions.Clear();
        }
    }
}

   
    
     

   
  
<Window  
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="WpfApplication1.Window1"
    Title="ColumnDefinitions Sample">
    <Border BorderBrush="Black" Background="White" BorderThickness="2">
  <DockPanel Margin="10,0,0,0">
    <TextBlock FontSize="20" FontWeight="Bold" DockPanel.Dock="Top">Grid Column and Row Collections</TextBlock>
        <Grid DockPanel.Dock="Top" HorizontalAlignment="Left" Name="grid1" ShowGridLines="true" Width="625" Height="400">
          <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
          </Grid.ColumnDefinitions>
          <Grid.RowDefinitions>
          <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
          </Grid.RowDefinitions>
        </Grid>

        <StackPanel HorizontalAlignment="Left" Orientation="Horizontal" Width="625" DockPanel.Dock="Top">
            <Button Width="125" Click="clearRow">Clear All Rows</Button>
        </StackPanel>    

  </DockPanel>
  </Border>  
</Window>

//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        RowDefinition rowDef1;
        ColumnDefinition colDef1;

        private void clearRow(object sender, RoutedEventArgs e)
        {
            grid1.RowDefinitions.Clear();
        }
    }
}

   
    
     

Grid Column and Row Collections

Remove One Column

//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;

namespace WpfApplication1
{
public partial class Window1 : Window
{
RowDefinition rowDef1;
ColumnDefinition colDef1;

private void removeCol(object sender, RoutedEventArgs e)
{
if (grid1.ColumnDefinitions.Count <= 0) { Console.WriteLine("No More Columns to Remove!"); } else { grid1.ColumnDefinitions.RemoveAt(0); } } } } [/csharp]

Grid Column and Row Collections

Remove One Row

//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;

namespace WpfApplication1
{
public partial class Window1 : Window
{
RowDefinition rowDef1;
ColumnDefinition colDef1;

private void removeRow(object sender, RoutedEventArgs e)
{
if (grid1.RowDefinitions.Count <= 0) { Console.WriteLine("No More Rows to Remove!"); } else { grid1.RowDefinitions.RemoveAt(0); } } } } [/csharp]

   
  
<Window  
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="WpfApplication1.Window1"
    Title="ColumnDefinitions Sample">
    <Border BorderBrush="Black" Background="White" BorderThickness="2">
  <DockPanel Margin="10,0,0,0">
    <TextBlock FontSize="20" FontWeight="Bold" DockPanel.Dock="Top">Grid Column and Row Collections</TextBlock>
        <Grid DockPanel.Dock="Top" HorizontalAlignment="Left" Name="grid1" ShowGridLines="true" Width="625" Height="400">
          <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
          </Grid.ColumnDefinitions>
          <Grid.RowDefinitions>
          <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
          </Grid.RowDefinitions>
        </Grid>

        <StackPanel HorizontalAlignment="Left" Orientation="Horizontal" Width="625" DockPanel.Dock="Top">
            <Button Width="125" Click="colCount">How Many Columns?</Button>
        </StackPanel>    

  </DockPanel>
  </Border>  
</Window>

//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        RowDefinition rowDef1;
        ColumnDefinition colDef1;


        private void colCount(object sender, RoutedEventArgs e)
        {
            Console.WriteLine("The current number of Columns is: " + grid1.ColumnDefinitions.Count);
        }
    }
}

   
    
     

   
  
<Window  
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="WpfApplication1.Window1"
    Title="ColumnDefinitions Sample">
    <Border BorderBrush="Black" Background="White" BorderThickness="2">
  <DockPanel Margin="10,0,0,0">
    <TextBlock FontSize="20" FontWeight="Bold" DockPanel.Dock="Top">Grid Column and Row Collections</TextBlock>
        <Grid DockPanel.Dock="Top" HorizontalAlignment="Left" Name="grid1" ShowGridLines="true" Width="625" Height="400">
          <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
          </Grid.ColumnDefinitions>
          <Grid.RowDefinitions>
          <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
          </Grid.RowDefinitions>
        </Grid>

        <StackPanel HorizontalAlignment="Left" Orientation="Horizontal" Width="625" DockPanel.Dock="Top">
            <Button Width="125" Click="rowCount">How Many Rows?</Button>
        </StackPanel>    

  </DockPanel>
  </Border>  
</Window>

//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        RowDefinition rowDef1;
        ColumnDefinition colDef1;


        private void rowCount(object sender, RoutedEventArgs e)
        {
            Console.WriteLine("The current number of Rows is: " + grid1.RowDefinitions.Count);
        }
    }
}

   
    
     

Grid Column and Row Collections

Remove 5 Columns

//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;

namespace WpfApplication1
{
public partial class Window1 : Window
{
RowDefinition rowDef1;
ColumnDefinition colDef1;

private void rem5Col(object sender, RoutedEventArgs e)
{
if (grid1.ColumnDefinitions.Count < 5) { Console.WriteLine("less than 5"); } else { grid1.ColumnDefinitions.RemoveRange(0,5); } } } } [/csharp]