Problem in Unity: ArgumentOutOfRangeException: Index was out of range - unity3d

Question

I always have the following problem when I execute the code in Unity:
ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
The property Grid I set directly in the Unity editor with a value of 10 for x and y.
public class World : MonoBehaviour
{
public Room[,] Dungeon { get; set; }
public Vector2 Grid;
private void Awake()
{
Dungeon = new Room[(int)Grid.x, (int)Grid.y];
StartCoroutine(GenerateFloor());
}
public IEnumerator GenerateFloor()
{
for (int x = 0; x < Grid.x; x++)
{
for (int y = 0; y < Grid.y; y++)
{
Dungeon[x, y] = new Room
{
RoomIndex = new Vector2(x, y)
};
}
}
yield return new WaitForSeconds(3);
Vector2 exitLocation = new Vector2((int)Random.Range(0, Grid.x), (int)Random.Range(0, Grid.y));
Dungeon[(int)exitLocation.x, (int)exitLocation.y].Exit = true;
Dungeon[(int)exitLocation.x, (int)exitLocation.y].Empty = false;
Debug.Log("Exit is at: " + exitLocation); }}
I hope you can help me in this case

Answer 1

It's pretty hard to see an error like this, without debugging the code. But in General,try to break public Vector2 Grid; 2 int variables and to use them,so do not need to be explicitly cast to an int, and your code will become significantly readable if you want x==y then we can make the test in Awake and fail to accidentally ask the wrong value. And Vector2 exitLocation can be replaced with Vector2Int or 2 variables.