我的 DevExpress xtragrid 中的一列无法排序、分组或过滤。类似问题的答案表明我需要实现 IComparable,但当我这样做时,它根本不再显示在列中。
public class Flow : System.IComparable<Flow>
{
public Flow(int id, string name, string description)
{
this.ID = id;
this.Name = name;
this.Description = description;
}
public int ID { get; private set; }
public string Name { get; private set; }
public string Description { get; private set; }
public override string ToString()
{
return Name;
}
public override bool Equals(object obj)
{
Flow flow = obj as Flow;
if (flow == null) return false;
return this.ID == flow.ID;
}
public static bool operator ==(Flow flow1, Flow flow2)
{
if (object.ReferenceEquals(null, flow1))
return object.ReferenceEquals(null, flow2);
return flow1.Equals(flow2);
}
public static bool operator !=(Flow flow1, Flow flow2)
{
return !(flow1 == flow2);
}
public override int GetHashCode()
{
return ID;
}
public int CompareTo(Flow other)
{
return this.Name.CompareTo(other.Name);
}
}
我做错了什么?
更新:
询问DevExpress ...
最佳答案
消失的内容是一个不相关的问题 - 一个转移注意力的问题。一旦我实现了IComparable
,该列就允许排序而不是IComparable<Flow>
public int CompareTo(object obj)
{
if (object.ReferenceEquals(null, obj))
return 1;
Flow flow = obj as Flow;
if (flow == null)
throw new ArgumentException("Object is not of type Flow");
return this.Name.CompareTo(flow.Name);
}
源自 MSDN 文档 IComparable.CompareTo
Method
关于c# - 对列进行排序需要 IComparable,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14517409/