Can I get back the original column order (on a button click) when a user reorders the columns?

See more:

WPF

DataGrid

Please have a look at the following code. When I click the Revert to org order button the columns should be reordered to original datagrid order. Is there any possibility? Please help me...... //The following is my code

<br />
            <Window x:Class="GridTextBox.MainWindow"<br />
                    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"<br />
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" <br />
                    Title="MainWindow" Height="350" Width="525" WindowState="Maximized"          Loaded="MainWindow_Loaded" removed="Gray"><br />
            <br />
                <Grid><br />
                    <Grid.RowDefinitions><br />
                        <RowDefinition Height="30"/><br />
                        <RowDefinition Height="*"/><br />
                        <RowDefinition Height="30"/><br />
                    </Grid.RowDefinitions><br />
                    <Grid.ColumnDefinitions><br />
                        <ColumnDefinition Width=".25*"/><br />
            <br />
                        <ColumnDefinition Width=".25*"/><br />
                        <ColumnDefinition Width=".25*"/><br />
                        <ColumnDefinition Width=".25*"/><br />
                    </Grid.ColumnDefinitions><br />
                    <DataGrid ColumnReordered="datagrid1_ColumnReordered"  GotFocus="datagrid1_GotFocus" LoadingRowDetails="datagrid1_LoadingRowDetails"  Grid.ColumnSpan="3" removed="Gray" Grid.Row="1" Height="auto" Name="datagrid1" AutoGenerateColumns="False" Width="440" VerticalAlignment="Center" SelectionChanged="datagrid1_SelectionChanged"><br />
                        <DataGrid.Columns><br />
                            <DataGridTemplateColumn Header="Empid"><br />
                                <DataGridTemplateColumn.CellTemplate><br />
                                    <DataTemplate><br />
                                        <TextBox Name="txtEmpid"   Text="{Binding Empid}"></TextBox><br />
                                    </DataTemplate><br />
                                </DataGridTemplateColumn.CellTemplate><br />
                            </DataGridTemplateColumn><br />
                            <DataGridTemplateColumn Header="Empname"><br />
                                <DataGridTemplateColumn.CellTemplate><br />
                                    <DataTemplate><br />
                                        <TextBox Text="{Binding Empname}"></TextBox><br />
                                    </DataTemplate><br />
                                </DataGridTemplateColumn.CellTemplate><br />
                                <DataGridTemplateColumn.CellEditingTemplate><br />
                                    <DataTemplate><br />
                                        <TextBox Text="{Binding Empname}"></TextBox><br />
                                    </DataTemplate><br />
                                </DataGridTemplateColumn.CellEditingTemplate><br />
                            </DataGridTemplateColumn><br />
                            <DataGridTemplateColumn Header="Empaddress"><br />
                                <DataGridTemplateColumn.CellTemplate><br />
                                    <DataTemplate><br />
                                        <TextBox Text="{Binding Empaddress}"></TextBox><br />
                                    </DataTemplate><br />
                                </DataGridTemplateColumn.CellTemplate><br />
                            </DataGridTemplateColumn><br />
                            <DataGridTemplateColumn Header="EmpCity"><br />
                                <DataGridTemplateColumn.CellTemplate><br />
                                    <DataTemplate><br />
                                        <TextBox Text="{Binding EmpCity}"></TextBox><br />
                                    </DataTemplate><br />
                                </DataGridTemplateColumn.CellTemplate><br />
                            </DataGridTemplateColumn><br />
                            <DataGridTemplateColumn Header="Empstate"><br />
                                <DataGridTemplateColumn.CellTemplate><br />
                                    <DataTemplate><br />
                                        <TextBox Text="{Binding EmpState}"></TextBox><br />
                                    </DataTemplate><br />
                                </DataGridTemplateColumn.CellTemplate><br />
                            </DataGridTemplateColumn><br />
                            <DataGridTemplateColumn Header="EmpCountry"><br />
                                <DataGridTemplateColumn.CellTemplate><br />
                                    <DataTemplate><br />
                                        <TextBox Text="{Binding EmpCountry}"></TextBox><br />
                                    </DataTemplate><br />
                                </DataGridTemplateColumn.CellTemplate><br />
                            </DataGridTemplateColumn>           <br />
                        </DataGrid.Columns><br />
            <br />
                    </DataGrid><br />
                    <Button Grid.Row="2" Grid.Column="2" Height="30" Content="Insert Employees" Click="Button_Click"></Button><br />
                    <Button Grid.Row="2" Grid.Column="1" Height="30" Content="Revert to org order" Name="btn" Click="btn_Click"></Button><br />
                </Grid><br />
            </Window><br />
<br />