Question

给出以下代码：

List<int> Data = new List<int>();
Data.Add(1);
Data.Add(2);
Array[] tmp = new Array[Data.Count];
tmp[0] = Data.ToString().ToArray();

如何访问Data中的tmp[0]数组？

我已尝试tmp[0,0]或tmp[0].Data[0]但它不起作用并给我一个错误。

简单的是我可以将数组添加到数组onedimesion吗？如果可以怎么样？

Answer 1

Just write

Array tmp;
tmp = Data.ToArray();
for(int x = 0; x < tmp.Length; x++)
    Console.WriteLine(tmp.GetValue(x));

However I recommend to stick at using a strong typed List

Going deeper along this slippery path you could create an Array of Array (oh boy this start to get confusing)

// Create an array of two Array
Array[] tmp = new Array[Data.Count];
// First array set to the integer array
tmp[0] = Data.ToArray();
// Second array of strings
tmp[1] = new string[5];

// Set first element of the second array to a string
tmp[1].SetValue("Steve", 0);

Again, forget this approach and use more advanced collection classes like

Dictionary
Hashset
Tuple

Answer 2

If you want to access your data a a specific position just use

Data[Index]

if you realy want to use a array you can do

int[] array = Data.ToArray();

Answer 3

必须这样做。

List<int> Data = new List<int>();

Data.Add(1);

Data.Add(2);

int[] tmp = Data.ToArray();

Answer 4

只需使用

即可

var array=Data.ToArray();

如果您想在数组中添加新项目，可能需要先使用

调整其大小

Array.Resize(ref array, array.Count() + 1);
array[array.Count()]=//your items here..

Answer 5

添加时。删除使用List<T>：

  List<int> Data = new List<int>();

  // Add item after item
  Data.Add(1);
  Data.Add(2);

  // Add whole range of items, e.g. an array
  Data.AddRange(new int[] {3, 4, 5});

  int v = Data[0];
  Data[0] = v + 10;

  Console.Write(String.Join(", ", Data));

最后，当你有一个数组

  int[] tmp = Data.ToArray();
  // you still can read an item
  int x = tmp[0];
  // and write it
  tmp[0] = x - 10;

但请记住，您无法tmp.Add()或tmp.RemoveAt()

如何访问Array []？

5 个答案: