The following works;
GridGroupByExpression groupBy = new GridGroupByExpression();
groupBy.Expression = "[Status] format \"Current {0}: {1}\" Group By Status DESC";
this.fundsGrid.MasterGridViewTemplate.GroupByExpressions.Add(groupBy);
The following doesnt work
GridGroupByExpression groupBy = new GridGroupByExpression();
groupBy.Expression = "[Status] format \"Current {0}: {1}\" Group By Status desc";
this.fundsGrid.MasterGridViewTemplate.GroupByExpressions.Add(groupBy);
:o)