public ColumnDef(string title, string formula, string format, Agregate agregate)
{
if (formula == null)
{
throw new ArgumentNullException("formula");
}
this.Title = title;
this.Formula = formula;
this.Format = format;
this.Summary = agregate;
}
public ColumnDef(string title, DataColumn column, string format, Agregate agregate)
{
if (column == null)
{
throw new ArgumentNullException("column");
}
this.Title = title;
this.Column = column;
this.Format = format;
this.Summary = agregate;
}