C#删除字符串中所有的空字符

string sourceStr = "Hi,   Bo ys "; 
char[] pChar = sourceStr.ToCharArray();//转换成字符数组
 IEnumerator p = pChar.GetEnumerator();//得到IEnumerator 对象
 StringBuilder sbBuilder = new StringBuilder();
while (p.MoveNext())//调用IEnumerator 对象的MoveNext方法
   {
    sbBuilder.Append((char) p.Current != ' ' ? p.Current.ToString() : String.Empty);
   }