private void button1_Click(object sender, EventArgs e)
{
	string str = "123456789";
	char[] chr = str.ToCharArray();
	Array.Reverse(chr);
	string[] strArr = Array.ConvertAll<char, string>(chr, delegate(char c) { return c.ToString(); });
	str = string.Join("", strArr);
	MessageBox.Show(str);
}




输出结果为:


987654321



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