1
我有以下代码(DevExpress的分量):问题与分组
dgvDisplayDictionary.DataSource = DataAccessor.GetAllRecords();
gvDisplay.BeginSort();
gvDisplay.ClearGrouping();
gvDisplay.Columns[0].GroupInterval = ColumnGroupInterval.Alphabetical;
gvDisplay.Columns[0].GroupIndex = 0;
gvDisplay.EndSort();
我收到以下错误:
At least one object must implement IComparable.
我的类绑定到gvDisplay
:
public class NormDocCost:AbstractDisplayDictionary.
{
public virtual Category Category { get; set; }
public virtual DocumentFormat DocumentFormat { get; set; }
public virtual Translate Translate { get; set; }
public virtual int NdcId { get; set; }
public virtual int PageStart { get; set; }
public virtual int PageEnd { get; set; }
public virtual double Cost { get; set; }
public virtual DateTime? DateFrom { get; set; }
public virtual DateTime? DateTo { get; set; }
}
我有试图写这个代码,但不能正常工作:
public int CompareTo(object other)
{
var obj = (NormDocCost)other;
if(obj.Category.Id == Category.Id)
{
return this.Category.NameRu.CompareTo(obj.Category.NameRu);
}
return obj.Category.Id.CompareTo(Category.Id);
}
是的,我在类别类中写了CompareTo,现在可以工作。但不是我想要的。无论如何,这是其他问题。 – user348173