我如何按名称对列表中的对象进行排序？例子：
mapPart_1_0
mapPart_1_2
mapPart_1_4
mapPart_1_6
mapPart_1_8
mapPart_1_10
mapPart_1_12
mapPart_1_24
mapPart_2_1
mapPart_2_11
Big list continues... (somewhere in that list are missing that aper in sorted one)
进入：
mapPart_1_0
mapPart_1_1
mapPart_1_2
mapPart_1_3
mapPart_1_4
mapPart_1_5
...
mapPart_2_1
mapPart_2_2
mapPart_2_3
...
mapPart_2_11
...
或者我可以将对象名称更改为其他名称以便更容易缩短吗？
谢谢你。
我认为你可以做这样的事情（未经测试）
var yourList= new List<YourObject>();
//add items to your list
yourList.Sort(delegate(YourObject p1, YourObject p2)
{
//you can make this delegate more complex if you need it
return p1.Name.CompareTo(p2.Name);
});
[检查][1] 这个问题
您需要的是带有自定义IComparer的 Sort 函数。您现在拥有的是使用 sort 时的默认 icomparer。这将检查字段值。
当您创建自定义 IComparer 时（您通过实现Icomparable接口在您的类中执行此操作）。它的作用是：您的对象会检查您排序列表中的每个其他对象。
这是由一个函数完成的。（不用担心 VS 在引用你的界面时会实现它
public class ThisObjectCLass : IComparable{
public int CompareTo(object obj) {
ThisObjectCLass something = obj as ThisObjectCLass ;
if (something!= null)
if(this.key.Split("_")[1].CompareTo(object.key.Split("_")[1]) == 0){
// extratc the numbers from your name and compare the numbers, you have to add some logic but I assume you know something about c#
//then:
if .....
}
else if(this.key.Split("_")[1] "is more important then(use some logic here)" object.key.Split("_")[1]){
return 1
}
else return -1
else
throw new ArgumentException("I am a dumb little rabid, trying to compare different base classes");
}
}
阅读上面的链接以获得更好的信息。
这涉及对您的要求的一些自由假设，并且是一种快速破解，但是......
var groups = myList.Select (text =>
new
{
FirstNum = int.Parse(text.Split('_')[1]),
SecondNum = int.Parse(text.Split('_')[2])
})
.GroupBy(a => a.FirstNum, a => a.SecondNum);
foreach(var group in groups.OrderBy(g => g.Key))
{
int min = group.Min();
int max = group.Max();
for(int i=min; i<=max; i++)
yield return string.Format ("mapPart_{0}_{1}", group.key, i);
}
假设您希望排序服从每个标记，看起来这可能是您想要的？老实说，我不确定你想要你的结果是什么......
class Program
{
public class ObjectNameComparer : IComparer<object>
{
public int Compare(object x, object y)
{
var n1 = x.ToString().Split('_');
var n2 = y.ToString().Split('_');
var nameCompare = string.Compare(n1[0], n2[0], StringComparison.OrdinalIgnoreCase);
if (nameCompare == 0)
{
var i1 = int.Parse(n1[1]);
var i2 = int.Parse(n2[1]);
if (i1 == i2)
{
var i12 = int.Parse(n1[2]);
var i22 = int.Parse(n2[2]);
return i12 - i22;
}
return i1 - i2;
}
return nameCompare;
}
}
static void Main(string[] args)
{
var objectList = new List<object>();
objectList.AddRange(new object[]
{
"mapPart_1_0",
"mapPart_1_10",
"mapPart_100_10",
"mapPart_1_12",
"mapPart_22_11",
"mapPart_1_24",
"mapPart_2_1",
"mapPart_10_24",
"mapPart_2_11",
});
var ordered = objectList.OrderBy(a => a, new ObjectNameComparer());
}
}
我更喜欢字符串的单行解决方案！
//Sort by Name: list = List<string>() ...
list.Sort((x, y) => String.Compare(x, y, StringComparison.Ordinal));