使用索引C#返回Array的子​​集

int[] array = new int[] { 1, 2, 3, 4, 5 };
int[] subset = new int[3];
int startIndex = 1;

Array.Copy(array, startIndex, subset, 0, subset.Length);

int[] array = new int[] { 1, 2, 3, 4, 5 };
int startIndex = 1;
int count = 3;

int[] subset = Array.FindAll(array, x => Array.IndexOf(array, x) >= startIndex && Array.IndexOf(array, x)< startIndex + count).ToArray();