带有Comparison委托的C#自定义比较器
本文关键字:自定义 比较器 Comparison 带有 | 更新日期: 2023-09-27 18:00:23
我正在尝试对自定义BindingList进行排序。但是我遇到了一个问题,我的比较器无法识别类的属性。无法识别"x.Code_PK_OriginalValue"。奇怪的是,intellisense在Comparer类中标记"Begrenzingen",与下面第一个代码块中的"Begrensingen"不同。
BindingListX<Begrenzingen> lst = new BindingListX<Begr.....;
lst.OrderBy(t => t, new CustomComparer<Begrenzingen>());
public class CustomComparer<Begrenzingen> : IComparer<Begrenzingen>
{
private readonly Comparison<Begrenzingen> _comparison;
public CustomComparer()
{
_comparison = new Comparison<Begrenzingen>(
(Begrenzingen x, Begrenzingen y) =>
{
return x.Code_PK_OriginalValue.CompareTo(y.Code_PK_OriginalValue);
}
);
}
public int Compare(Begrenzingen x, Begrenzingen y)
{
return _comparison(x, y);
}
}
。
public class BindingListX<T> : BindingList<T>
{
public void OrderBy(Func<T,T> keySelector, IComparer<T> comparer)
{
this.Items.OrderBy(keySelector, comparer);
}
}
public class Begrenzingen : DefaultTable, IComparable<Begrenzingen>
{
public Begrenzingen()
{ //New -> Insert DB
Code_PK_OriginalValue = -1;
isDeleted = false;
}
public decimal Code_PK_OriginalValue { get; set; }
public decimal Code_PK { get; set; }
public string Naam { get; set; }
public decimal? SeqLayer { get; set; }
public Boolean isDeleted { get; set; }
public string SeqLayerDisplayValue {
get {
if (SeqLayer == null) return string.Empty;
return (from sdo in MainWindow.Main.SdoLayers where sdo.SeqLayer == this.SeqLayer select sdo.DisplayValue).First();
}
}
public override string ToString()
{
return String.Format("{0};{1};{2};{3}", Code_PK_OriginalValue, Code_PK, Naam, SeqLayer);
}
public int CompareTo(Begrenzingen o)
{
return Code_PK.CompareTo(o.Code_PK);
}
}
只使用lst.OrderBy(t => t.Code_PK_OriginalValue);
如何