Question: Is there a function to remove the last cell from array?

it's a string array like: `{"a","b","c",""}`.

Answer: 
An array is a fixed-size collection object. That makes it woefully inadequate for what you want to do. The best you could do is create *another* one with one less element. That's expensive.

Fix the real problem, this should be a `List<string>`, now it's simple.
```
var newArraySize = oldArray.Length - 1;
var newArray = new string[newArraySize];
Array.Copy(oldArray, newArray, newArraySize);

```