چگونه کلمات یک جمله در #C را جدا کنیم؟

sentence.Split(new Char[]{' '},StringSplitOptions.RemoveEmptyEntries);

 List<string> array = new List<string>();
		for (int i = 0; i < sentence.Length; ++i)
		{
			var current = sentence[i];
			var temp = "";
			if (current != ' ')
			{
				for (int j = i; j < sentence.Length; ++j)
				{
					if (sentence[j] == ' ')
					{
						array.Add(temp);
						i = j - 1;
						temp = "";
						break;
					}

					temp += sentence[j];
				}
			}
			else if (current == ' ')
			{
				for (int j = i; j < sentence.Length; ++j)
				{
					if (sentence[j] != ' ')
					{
						i = j - 1;
						temp = "";
						break;
					}

					temp += sentence[j];
				}
			}

			if (temp != "")
			{
				temp = "";
				break;
			}
		}

string[] words = Regex.Split(sentence, @"\s+");