How to programmatically binding width DataGridColumn from another DataGridColumn

Question

I'm trying to programmatically binding the width of a column from one table to the width of a column in another table. How can I do it? Here is my code:

DataGridTextColumn classNameColumn = new DataGridTextColumn();
classNameColumn.Header = "CLASS";
classNameColumn.Binding = new Binding("CLASS_NAME");
classNameColumn.IsReadOnly = true;
ScheduleGrid.Columns.Add(classNameColumn);

DataGridTextColumn noneColumn = new DataGridTextColumn();
noneColumn.Header = "";
var bindingWidth = new Binding("Width") { Source = classNameColumn, Mode = BindingMode.TwoWay };
BindingOperations.SetBinding(noneColumn, WidthProperty, bindingWidth);
WeeekHeaderGrid.Columns.Add(noneColumn);

In XAML-code this work fine:

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto" />
        <RowDefinition Height="*" />
    </Grid.RowDefinitions>

    <DataGrid x:Name="ScheduleGrid" Grid.Row="1" AutoGenerateColumns="False" SelectionMode="Single"
              CanUserReorderColumns="False" CanUserAddRows="False" CanUserSortColumns="False"
              CellEditEnding="ScheduleGrid_CellEditEnding">
        <DataGrid.Columns>
            <DataGridTextColumn x:Name="ClassName" Header="CLASS" Binding="{Binding CLASS_NAME}" />
        </DataGrid.Columns>
    </DataGrid>
    <DataGrid x:Name="WeeekHeaderGrid" Grid.Row="0" CanUserReorderColumns="False" CanUserAddRows="False" CanUserSortColumns="False" CanUserResizeColumns="True">
        <DataGrid.Columns>
            <DataGridTextColumn Header="" Width="{Binding Source={x:Reference ClassName}, Path=Width, Mode=TwoWay}"/>
        </DataGrid.Columns>
    </DataGrid>
</Grid>

Answer 1

you are using incorrect WidthProperty DP in code.

change it to

BindingOperations.SetBinding(noneColumn, DataGridColumn.WidthProperty, bindingWidth);

DataGridColumn.WidthProperty has type DataGridLength.