计算一个字符并显示在toolStripStatusLabel中

我想在每次将文本放入富文本框时计算有多少字符。

(如果我输入'Hello there'(它应该显示"10个字符…"而不是"2个字符…")

private void rtbText_TextChanged(object sender, EventArgs e)
        {
            char[] arrCharacter = new char[1] { ' ' };
            int countChar = rtbText.Text.Split(arrCharacter).Length;
            char[] arrVowels = new char[5] { 'a', 'e', 'i', 'o', 'u' };
            int countVowels = rtbText.Text.Split(arrVowels).Length;
            toolStripStatusLabel1.Text = countChar + " characters, of which " + countVowels + " are vowels.";
        }

肯定和这一行有关系。事实上，它给我的是字数而不是字符。

char[] arrCharacter = new char[1] { ' ' };

谢谢你的帮助!

var vowels = new char[]{ 'a', 'e', 'i', 'o', 'u' };
var vowelCount = rtbText.Text.Count(c => vowels.Contains(c));
var characterCount = rtbText.Text.Length;
toolStripStatusLabel1.Text = characterCount + " characters, of which " 
    + vowelCount + " are vowels.";