Dictionary<int, int> dic = new Dictionary<int, int>();
dic.Add(1, 158);
dic.Add(5, 25);
dic.Add(3, 215);
dic.Add(2, 369);
dic.Add(4, 147); var result = from pair in dic orderby pair.Key select pair; foreach (KeyValuePair<int, int> pair in result)
{
Console.WriteLine("Key:{0}, Value:{1}", pair.Key, pair.Value);
} Console.ReadKey();
现在结果是
1
2
3
4
5我希望是5
4
3
2
1
dic.Add(1, 158);
dic.Add(5, 25);
dic.Add(3, 215);
dic.Add(2, 369);
dic.Add(4, 147); var result = from pair in dic orderby pair.Key descending select pair; foreach (KeyValuePair<int, int> pair in result)
{
Console.WriteLine("Key:{0}, Value:{1}", pair.Key, pair.Value);
} Console.ReadKey();
var dicTest3= dicTest2.Reverse();
foreach (var keyValuePair in dicTest3)
{
Console.WriteLine("{0}:{1}", keyValuePair.Key, keyValuePair.Value);
}