复制代码 代码如下:

public static void SortDicWithLinq(){

Dictionary<DateTime, String> dd = new Dictionary<DateTime, String>();

DateTime dt = DateTime.Now;

dd.Add(dt, "bbb");

dd.Add(dt.AddDays(-1),"ccc");

dd.Add(dt.AddDays(1), "aaa");

Console.WriteLine("Org===============");

travelDicKeyDate(dd);

Dictionary<DateTime, String> dicAsc = dd.OrderBy(p => p.Key).ToDictionary(p => p.Key, p => p.Value);

Console.WriteLine("Asc===============");

travelDicKeyDate(dicAsc);

Dictionary<DateTime, String> dicDesc = dd.OrderByDescending(p => p.Key).ToDictionary(p => p.Key, p => p.Value);

Console.WriteLine("Desc===============");

travelDicKeyDate(dicDesc);

} public static void travelDicKeyDate(Dictionary<DateTime, String> dic)

{

foreach (KeyValuePair<DateTime,String> kvp in dic)

{

Console.WriteLine(String.Format("{0} {1}",kvp.Key,kvp.Value));

}

}

output:

Org===============

2013/9/27 11:07:29 bbb

2013/9/26 11:07:29 ccc

2013/9/28 11:07:29 aaa

Asc===============

2013/9/26 11:07:29 ccc

2013/9/27 11:07:29 bbb

2013/9/28 11:07:29 aaa

Desc===============

2013/9/28 11:07:29 aaa

2013/9/27 11:07:29 bbb

2013/9/26 11:07:29 ccc