Can you control the width of columns in the row area of the xamPivotGrid, where the currently added row data is displayed? 

With the 2011.1 release we have made the DataColumn.ColumnWidth property settable to control the columns in the Column area.

However, a question has come up.  How can you control the width of the columns in the Row area?  As each item is added to the rows collection it generates a “column” in the row header panel.  Is there a way to control the width of these columns?

For columns in row header panel you can use the following property where i is the index of column in row header panel.

pivotGrid.GridLayout.PrivateColumnsForRowPanel[i].ColumnWidth = 200;