在C#中對List<>進行排序

 

我們知道List<>類型可以支持對任意類型的存儲，我們也可以對其進行排序。現介紹一種較為簡單的方法：

1、我們先定義一個類CAttributeFeature，后面我們用List<CAttributeFeature>來存儲該類的一個列表，代碼如下：

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、我們定義一個函數SortCompare()，對List<CAttributeFeature>進行排序時作為參數使用，代碼如下：

#region SortCompare()函數，對List<CAttributeFeature>進行排序時作為參數使用
/// <summary>
/// 對List<CAttributeFeature>進行排序時作為參數使用
/// </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、產生一個List<CAttributeFeature>的對象，將前一步定義的SortCompare()函數做為Sort()方法的參數傳入，就可以對List<CAttributeFeature>進行排序了。代碼如下：

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

//按其特征值進行排序
listAF.Sort(SortCompare);