All source code for expression parsing C #

Using System;
Using System. Collections;
Namespace XXXXX
{
Public class Expression
 {
Private Expression (){}
# Region No01. the expression is split into ArrayList forms.
/// <Summary>
/// The expression must use spaces as the separator
/// The conversion expression is divided:
/// Variable and value. The variable cannot be @
/// String ""
/// Operator No. {+,-, *,/, ++, + =, --,-=, * =,/= ,! ,! =,>, >=, >>, <, <=, <>, |, |=, ||, &, & = ,&&}
/// Brackets {including (,)}
/// </Summary>
/// <Param name = "sExpression"> </param>
/// <Returns> </returns>
Public static ArrayList ConvertExpression (string sExpression)
    {
ArrayList alist = new ArrayList ();
String word = null;
Int I = 0;
String c = "";
 
While (I <sExpression. Length)
     {
# Region"
If (word! = Null & word! = "")