在C#中对List<>进行排序

 

我们知道List<>类型可以支持对任意类型的存储，我们也可以对其进行排序。现介绍一种较为简单的方法：

1、我们先定义一个类CAttributeFeature，后面我们用List<CAttributeFeature>来存储该类的一个列表，代码如下：

public class CAttributeFeature
{
    public string m_strAttributeName { get; set; }
    public double m_dAttributeFeature { get; set; }

    public CAttributeFeature(string strName, double dFeature)
    {
        this.m_strAttributeName = strName;
        this.m_dAttributeFeature = dFeature;
    }

    public void FeatureAdd(double dFeature)
    {
        this.m_dAttributeFeature += dFeature;
    }
}

2、我们定义一个函数SortCompare()，对List<CAttributeFeature>进行排序时作为参数使用，代码如下：

#region SortCompare()函数，对List<CAttributeFeature>进行排序时作为参数使用
/// <summary>
/// 对List<CAttributeFeature>进行排序时作为参数使用
/// </summary>
/// <param name="AF1"></param>
/// <param name="AF2"></param>
/// <returns></returns>
private static int SortCompare(CAttributeFeature AF1, CAttributeFeature AF2)
{
int res = 0;
if (AF1.m_dAttributeFeature > AF2.m_dAttributeFeature)
{
res = -1;
}
else if (AF1.m_dAttributeFeature < AF2.m_dAttributeFeature)
{
res = 1;
}
return res;
}
#endregion

3、产生一个List<CAttributeFeature>的对象，将前一步定义的SortCompare()函数做为Sort()方法的参数传入，就可以对List<CAttributeFeature>进行排序了。代码如下：

List<CAttributeFeature> listAF = m_nDTreeGenerator1.Chaos_GetUsefulAttributeFeature(Chaos_DTree1);

//按其特征值进行排序
listAF.Sort(SortCompare);