代码
1 /// <summary> 2 /// 提取字符串中的数字字符串 3 /// </summary> 4 /// <param name="str"></param> 5 /// <returns></returns> 6 public static string IsNumber(String str) 7 { 8 string returnStr = string .Empty; 9 for ( int i = 0 ; i < str.Length; i ++ ) 10 { 11 if (Char.IsNumber(str, i) == true ) 12 { 13 returnStr += str.Substring(i, 1 ); 14 } 15 else 16 { 17 if (str.Substring(i, 1 ) == " A " || str.Substring(i, 1 ) == " " ) 18 { 19 returnStr += str.Substring(i, 1 ); 20 } 21 } 22 23 } 24 return returnStr; 25 }