List去重复(List中存的是对象)

class ProductComparare : IEqualityComparer<YEWULIANG>
{
private Func<YEWULIANG, object> _funcDistinct;
public ProductComparare(Func<YEWULIANG, object> funcDistinct)
{
this._funcDistinct = funcDistinct;
}
public bool Equals(YEWULIANG x, YEWULIANG y)
{
return _funcDistinct(x).Equals(_funcDistinct(y));
}
public int GetHashCode(YEWULIANG obj) { return this._funcDistinct(obj).GetHashCode(); }
}

使用如下:

List<YEWULIANG> list=new List<YEWULIANG> (){

new YEWULIANG {name="1",age=12} ,

new YEWULIANG {name="1",age=13} ,

new YEWULIANG {name="2",age=14} ,

}

//使用后

var listCNAME = list.Distinct<YEWULIANG>(new ProductComparare(m => m.c_name)).ToList();

listCNAME里面的对象为

　new YEWULIANG {name="1",age=12} ,

new YEWULIANG {name="2",age=14} ,