Question

我有一个元组列表，并且用文件夹的所有目录填充此列表，并使用以下代码将其绑定到asp：ListView：

List<string> directoryContent = new List<string>(Directory.GetFileSystemEntries(dirPath);
List<Tuple<string, string>> directoryList = new List<Tuple<string, string>>();

for (int i = 0; i < directoryContent.Count; i++)
{
    FileAttributes attr = File.GetAttributes(directoryContent[i]);
    if (attr.ToString().Equals("Directory"))
    {
        String str = directoryContent[i].Remove(0, dirPath.Length);
        string count = Directory.GetFiles(directoryContent[i], "*.*", SearchOption.AllDirectories).Length.ToString();
        directoryList.Add(new Tuple<string, string>(str, count));
    }
}

directoryListView.DataSource = directoryList;
directoryListView.DataBind();

例如找到的目录是

12
566
10001
10
模板
文件

以这种方式对List或ListView进行排序的最佳方法是什么？先感谢您。我需要按以下顺序对目录进行排序：

文件
模板
10
12
566
1001

Answer 1

您可以为此使用Linq。

//test data
List<string> list = new List<string>()
{
    "12",
    "566",
    "10001",
    "10",
    "templates",
    "files"
};

int tempInt;

//filter the numbers from the list and sort
var listNumbers = list.Where(x => int.TryParse(x, out tempInt)).Select(y => Convert.ToInt32(y)).OrderBy(z => z);

//filter the strings from the list and sort
var listStrings = list.Where(x => !int.TryParse(x, out tempInt)).OrderBy(y => y);

//join the two lists again
var orderedList = listStrings.Concat(listNumbers.Select(y => y.ToString())).ToList();

更新元组列表

List<Tuple<string, string>> list = new List<Tuple<string, string>>()
{
    new Tuple<string, string>("12", "NA"),
    new Tuple<string, string>("566", "NA"),
    new Tuple<string, string>("10001", "NA"),
    new Tuple<string, string>("10", "NA"),
    new Tuple<string, string>("templates", "NA"),
    new Tuple<string, string>("files", "NA")
};

int tempInt;

//filter the numbers from the list and sort
var listNumbers = list.Where(x => int.TryParse(x.Item1, out tempInt)).Select(y => new Tuple<int, string>(Convert.ToInt32(y.Item1), y.Item2)).OrderBy(z => z.Item1);

//filter the strings from the list and sort
var listStrings = list.Where(x => !int.TryParse(x.Item1, out tempInt)).OrderBy(z => z.Item1);

//join the two lists again
var orderedList = listStrings.Concat(listNumbers.Select(y => new Tuple<string, string>(y.Item1.ToString(), y.Item2))).ToList();

在List <tuple <>>（）或asp：ListView中对由字符和数字组成的值进行排序

1 个答案: