123……变成相应的大写文字壹、贰、叁……(泛型集合)

Console.WriteLine("请输入一个数：");
string number = Console.ReadLine();
string str = "1壹 2贰 3叁 4肆 5伍 6陆 7柒 8捌 9玖 0零";
Dictionary<char, char> dict = new Dictionary<char, char>();
string[] parts = str.Split(' ');
for (int i = 0; i < parts.Length; i++)
{
dict.Add(parts[i][0], parts[i][1]);
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < number.Length; i++)
{
sb.Append(dict[number[i]]);
}
Console.WriteLine(sb.ToString());