First off, I apologize, this was meant for the WPF forum, but I posted too quickly. Please move it if you need to.
I am using some of the DataAnnotations attributes, and they work wonderfully. My hope was to set which properties would aggregate with a format string with a custom attribute. Something like below.
[Display(Name = "Trade Amount")]
[DisplayFormat(DataFormatString = "{0:C}")]
[DisplayAggregate(AggregateFunction.Sum, ResultFormatString = "Total: {0:C}")]
[DisplayAggregate(AggregateFunction.Min, ResultFormatString = "Min: {0:C}")]
public double Amount { get; set; }
I actually got this working after posting, but it is a bit of a workaround. In the AutoGeneratingColumn event, I match the column name against the RadGridView item and pull the attributes from there, not the column.datatype. But if there is a more elegant solution, I wouldn't mind changing my existing work.
Cheers.
private void ResultsGridView_OnAutoGeneratingColumn(object sender, GridViewAutoGeneratingColumnEventArgs e)
{
var column = e.Column as GridViewDataColumn;
if (column == null || ResultsGridView.Items.Count == 0) return;
var propName = column.DataMemberBinding.Path.Path;
var props = ResultsGridView.Items[0].GetType().GetProperties();
var aggregates = (from prop in props where prop.Name == propName select (DisplayAggregate[]) prop.GetCustomAttributes(typeof (DisplayAggregate), false)).FirstOrDefault();
AddAggregatesToGridColumn(aggregates, column);
}