c# - C#-添加到字符串[]成员

Question

我有一个名为lst的List ：

[0] "ABC" "DEF" "GHI"
[1] "JKL" "MNO" "PQR"
[2] etc, etc...

如何在每个第一个成员的末尾添加另一个字符串？

字符串s =“ EndOfBlock”;

[0] "ABC" "DEF" "GHI" "EndOfBlock"
[1] "JKL" "MNO" "PQR" "EndOfBlock"
[2] etc, etc...

谢谢。

Answer 1

正如评论者所指出的，听起来您确实想要List<List<string>>。但是，如果您想坚持使用List<string[]>，这就是我扩展每个数组的方式。

List<string[]> list = ...
for(int i = 0; i < list.Count; i++)
{
    // copy to a local variable (list[i] is a property, which can't be passed 'ref')
    string[] array = list[i];

    // resize the local variable. (this creates a new string[] object)
    Array.Resize(ref array, array.Length + 1);
    array[array.Length - 1] = "EndOfBlock";

    // put the new object back in the list, replacing the old smaller one.
    list[i] = array;
}