A class extends ArrayList, but the instance of the calss do not work in a complex case.

        protected void ChkCanAuditNews()
        {
            //-------------------------------------------------------------------------------------------------------------------------------------------
            //-----------------------------------------------------Should be true here, but i dont know why if does not work-----------------------------
            //-------------------------------------------------------------------------------------------------------------------------------------------

            NewsCatPermission Dic = new NewsCatPermission();
            if (Dic.Dic[news.Category].ToString().Substring(0, 2).Equals("02") && CurrentUser.Permissions.Contains(LnWDynamic.Audit))
            {
                canAuditNews = true;
            }
            else if (!Dic.Dic[news.Category].ToString().Substring(0, 2).Equals("02") && CurrentUser.Permissions.Contains(ABM.Lib.Common.Permissions.NewsPublish.Audit))
            {
                canAuditNews = true;
            }
        }

ok, this is the classes,

  1using System;
  2using System.Collections;
  3using System.Collections.Generic;
  4using System.Text;
  5
  6namespace ABM.Lib.Common
  7{
  8    public class AbmArrayList : ArrayList
  9    {
 10        public override bool Contains(object item)
 11        {
 12            return base.Contains(item);
 13        }
 14        public ArrayList GetKeys()
 15        {
 16            try
 17            {
 18                ArrayList list = new ArrayList();
 19                foreach (AbmObject o in this)
 20                {
 21                    if (!list.Contains(o.GetKey()))
 22                    {
 23                        list.Add(o.GetKey());
 24                    }
 25                }
 26                return list;
 27            }
 28            catch (Exception e)
 29            {
 30                return null;
 31            }
 32        }
 33        public ArrayList GetValues()
 34        {
 35            try
 36            {
 37                ArrayList list = new ArrayList();
 38                foreach (AbmObject o in this)
 39                {
 40                    if (!list.Contains(o.GetValue()))
 41                    {
 42                        list.Add(o.GetValue());
 43                    }
 44                }
 45                return list;
 46            }
 47            catch (Exception e)
 48            { 
 49                return null;
 50            }
 51        }
 52
 53        public ArrayList GetKeysIn(ArrayList keys)
 54        {
 55            try
 56            {
 57                ArrayList list = new ArrayList();
 58                ArrayList allKeys = GetKeys();
 59                foreach (object o in keys)
 60                {
 61                    if (!allKeys.Contains(o))
 62                    {
 63                        list.Add(o);
 64                    }
 65                }
 66                return list;
 67            }
 68            catch (Exception e)
 69            {
 70                return null;
 71            }
 72        }
 73
 74        public ArrayList GetValuesIn(ArrayList values)
 75        {
 76            try
 77            {
 78                ArrayList list = new ArrayList();
 79                ArrayList allValues = GetValues();
 80                foreach (object o in allValues)
 81                {
 82                    if (!allValues.Contains(o))
 83                    {
 84                        list.Add(o);
 85                    }
 86                }
 87
 88                return list;
 89            }
 90            catch (Exception d)
 91            {
 92                return null;
 93            }
 94        }
 95
 96        public ArrayList GetItemsIn(ArrayList m_list)
 97        {
 98            try
 99            {
100                ArrayList list = new ArrayList();
101                foreach (AbmObject o in m_list)
102                {
103                    if (this.Contains(o))
104                    {
105                        list.Add(o);
106                    }
107                }
108                return list;
109            }
110            catch (Exception e)
111            {
112                return null;
113            }
114        }
115        public ArrayList GetKeysByValue(object vl)
116        {
117            try
118            {
119                ArrayList list = new ArrayList();
120                foreach (AbmObject o in this)
121                {
122                    if (o.GetValue().ToString().Equals(vl))
123                    {
124                        list.Add(o.GetKey());
125                    }
126                }
127                return list;
128            }
129            catch (Exception e)
130            {
131                return null;
132            }
133
134        }
135        public ArrayList GetValuesByKey(object key)
136        {
137            try
138            {
139                ArrayList list = new ArrayList();
140                foreach (AbmObject o in this)
141                {
142                    if (o.GetKey().Equals(key)) 
143                    {
144                        list.Add(o.GetValue());
145                    }
146                }
147                return list;
148            }
149            catch (Exception e)
150            {
151                return null;
152            }
153        }
154    }
155    
156
157    public class AbmObject
158    {
159        private object m_o1;
160        private object m_o2;
161
162        public object GetValue()
163        {
164            return m_o2;
165        }
166        public object GetKey()
167        {
168            return m_o1;
169        }
170        public AbmObject(object o1, object o2)
171        {
172            m_o1 = o1;
173            m_o2 = o2;
174        }
175    }
176}
177

and the method has errors.