ArrayList排序的问题，请教大家！！！

Question

看了看帮助，写了写，可以排序，只是不知道是不是这样子作：）
...
using System.Collections;
...
public class MyComparer:IComparer
{
    public int Compare(object a,object b)
    { 
         SubDirectory a1=(SubDirectory)a;
         SubDirectory b1=(SubDirectory)b;
         if (a1.iFile > b1.iFile)
             return 1;
         else if (a1.iFile < b1.iFile)
             return -1;
         else return 0;
     }
}
....
MyComparer comparer=new MyComparer();
temp.Sort(comparer);
......
如果你要根据SubDirectory里的那个string字段sort的话，改写Compare
就可以了

Answer 1

哈哈，差不多！！
继承IComparer接口，重写接口函数CompareTo(object obj);
public struct SubDirectory:IComparer
{
    public string subDirectory;
    public int iFile;
    public CompareTo(object obj)
    {
        SubDirectory sd=(SubDirectory)obj;
        if(iFile.CompareTo(sd.iFile)!=0)
        {
           return iFile.CompareTo(sd.iFile);
        }
        else
        {
           return subDirectory.CompareTo(sd.subDirectory);
        }
    }
}