WPF: how to make the grid column edtiable base on cell content?

Question

our WPF application uses DataGrid.
One grid column we need base on cell has value or not to decide if make the cell editable.
If cell is empty, not editable. If cell is not empty, make it editable.
The cell is bind to a class. We try to make property to bind to the
DataGridTextColumn
IsReadOnly property
public bool IsSampleIdFieldReadOnly { get { return string.IsNullOrEmpty(_sampleId); } }
DataGridTextColumn MinWidth="120"
Binding="{Binding SampleId}"
IsReadOnly="{Binding IsSampleIdFieldReadOnly}"
Header="Sample ID" />
However all cells in the column are editable.
how to achieve that? Thx!
JaneC

Answer 1

I guess that will apply to the whole column rather than specific cells and you need a  cellstyle.
You could try something like:
<DataGridTextColumn Binding="{Binding SampleId}" Header="Sample Id">
<DataGridTextColumn.CellStyle>
<Style TargetType="DataGridCell">
<Style.Triggers>
<DataTrigger Binding="{Binding IsSampleIdFieldReadOnly}" Value="true">
<Setter Property="IsReadOnly" Value="true" />
</DataTrigger>
</Style.Triggers>
I'm afraid I don't have enough time to test it as I'm off out drinking shortly.
Hope that helps.
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