给定位置
的列表,我需要执行 2 个排序步骤。
- 按
LocationType
升序排列。 - 对于每个位置类型值,按
Name
升序排列这些结果。
示例数据:
Location Type | Name
2 | Templestowe Lower
2 | Templestowe
1 | Melbourne
预期结果:
1. Melbourne
2. Templestowe
3. Templestowe Lower
Here is a (not working) .NET Fiddle ...
这是主要代码(从那个 fiddle 复制的)..
private class Location
{
public Location (string name, int locationType)
{
Name = name;
LocationType = locationType;
}
public string Name { get; private set; }
public int LocationType { get; private set;}
}
public static void Main()
{
var locations = new List<Location>
{
new Location("Templestowe Lower", 2),
new Location("Templestowe", 2),
new Location("Melbourne", 1)
};
// TODO: return a list, sorted by LocationType and name.
var results = XXXXX;
foreach(var location in results)
{
Console.WriteLine(location.Name);
}
}
最佳答案
locations.Sort((x,y) => {
int delta = x.LocationType.CompareTo(y.LocationType);
if(delta == 0) delta = string.Compare(x.Name, y.Name);
return delta;
});
或者:
var results = locations.OrderBy(x => x.LocationType).ThenBy(x => x.Name);
或者在 LINQ 语法中(编译成相同的东西):
var results = from loc in locations
orderby loc.LocationType, loc.Name
select loc;
关于c# - 如何按两个属性对这个简单的 .NET 列表进行排序?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26607443/