Question

I have this:

        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="50*" />
            <ColumnDefinition Width="5" />
            <ColumnDefinition Width="50*" />
        </Grid.ColumnDefinitions>
        <GridSplitter Background="{x:Static SystemColors.ControlBrush}"
          Grid.Column="1"
          Margin="0,0,0,0"
          Name="splitter"
          HorizontalAlignment="Stretch" />

I’m trying to save and restore the splitter position. I’m using grid.ColumnDefinitions[0].Width, which returns the width of the column in pixels.

When I restore the position, how do I restore AND keep the 50* setting, so that when you resize the window, the column resizes correctly?

Answer 1

The Width property is not a simple double, it is a System.Windows.GridLength object which contains the Value property (double) and a GridUnitType property (GridUnitType) which is an enum.
So, to set your column’s width to 50*:

grid.ColumnDefinitions[0].Width = new GridLength(50, GridUnitType.Star)

To save and restore all you need to do is to save the value and the GridUnitType for each column.

Hope it helps.