在C语言中,将整数列表转换为逗号分隔的数字字符串的最简单方法是什么#

string.Join(",", l.ConvertAll(i => i.ToString()).ToArray());

这是假设您是在.NET3.5W/Linq下编译的。

String s = String.Join(",", a.Select(i => i.ToString()).ToArray());

string s = string.Join(",", Array.ConvertAll(a, i => i.ToString()));

(尽管我不确定它是否会编译):

string s = string.Join(",", a);

  String.Join(",", l);

int[] array = {1,2,3};

string delimited = string.Join(",", array);

l.Select(i => i.ToString()).Aggregate((s1, s2) => s1 + "," + s2)

string s = a.Aggregate("", (acc, n) => acc == "" ? n.ToString() : acc + "," + n.ToString());

public static string ToDelimitedString<T>(this IEnumerable<T> items, string delimiter)
{
    StringBuilder joinedItems = new StringBuilder();
    foreach (T item in items)
    {
        if (joinedItems.Length > 0)
            joinedItems.Append(delimiter);

        joinedItems.Append(item);
    }

    return joinedItems.ToString();
}

对于您的列表,它变成: l.ToDelimitedString(",") 为了方便起见,我添加了一个总是使用逗号作为分隔符的重载。