string str1 = @"WWW123-112EF2211/V1.0字字字字";
            string str2 = @"QWE234A-123AB32/V2.2字字字字字";
            //结果一： WWW123(V1.0)-112EF2211/
            //结果二： QWE234(V2.2)-123AB32/A
            if (str2.Contains("-") && str1.Contains("/V"))
            {
                if (str2.StartsWith("WWW") || str2.StartsWith("QWE"))
                {
                    //匹配
                    str2 = System.Text.RegularExpressions.Regex.Replace(str2, @"(WWW|QWE)(\d+)([A-Z]*?)-(\d+[A-Z]+\d+)/(V\d+\.\d+)", @"$1$2($5)-$4/$3");
                    str2 = System.Text.RegularExpressions.Regex.Replace(str2, @"[\u4e00-\u9fa5]+", "");//去掉中文
                    Console.WriteLine(str2);
                }
                else
                {
                    Console.WriteLine("源字符串不以WWW和QWE开头");
                }
            }
            else
            {
                Console.WriteLine("源字符串不包含-和/V");
            }
/*
QWE234(V2.2)-123AB32/A
*/

------解决方案--------------------

更完整点
C# code

    string str1 = @"WWW123-112EF2211/V1.0字字字字";
            string str2 = @"QWE234A-123AB32/V2.2字字字字字";
            List<string> list = new List<string>();
            List<string> matchList = new List<string>();
            list.Add(str1);
            list.Add(str2);
            //结果一： WWW123(V1.0)-112EF2211/
            //结果二： QWE234(V2.2)-123AB32/A
            foreach (string str in list)
            {
                if (str.Contains("-") && str.Contains("/V"))
                {
                    if (str.StartsWith("WWW") || str.StartsWith("QWE"))
                    {
                        string newstr = String.Empty;
                        //匹配
                        newstr = System.Text.RegularExpressions.Regex.Replace(str, @"(WWW|QWE)(\d+)([A-Z]*?)-(\d+[A-Z]+\d+)/(V\d+\.\d+)", @"$1$2($5)-$4/$3");
                        newstr = System.Text.RegularExpressions.Regex.Replace(str, @"[\u4e00-\u9fa5]+", "");//去掉中文
                        matchList.Add(newstr);
                    }
                    else
                    {
                        Console.WriteLine("源字符串不以WWW和QWE开头");
                    }
                }
                else
                {
                    Console.WriteLine("源字符串不包含-和/V");
                }
            }
            matchList.ForEach(X => Console.WriteLine(X));
            /*
              WWW123(V1.0)-112EF2211/ 
              QWE234(V2.2)-123AB32/A
             * /

------解决方案--------------------

C# code
string[] arrStr = new string[] { "WWW123-112EF2211/V1.0字字字字", " QWE234A-123AB32/V2.2字字字字字" };
        Regex reg = new Regex(@"(?is)(WWW|QWE)(\d{3})([^-]+?)?(-[^/]+?/)(.{4}).+");
        foreach (string str in arrStr)
        {
            Response.Write(reg.Replace(str, "$1$2($5)$4$3") + "<br/>");
        }

//WWW123(V1.0)-112EF2211/
//QWE234(V2.2)-123AB32/A