Thank you very much. I hoped I could avoid manual coding.
Instead of Color.Empty I use Color.Transparent for the missing points to avoid line drawing.

Daniel

I have a problem with stacked bars and missing values. My data is a set of tables resulting from a database query. Each table has two columns (Week and Amount) For each table I create a bar series with the MutliBar property set to Stacked, the table is the DataSource and DataMember for XValues and Y...