source: BMXNET_RPMS_dotNET_UTILITIES-BMX/trunk/cs/bmx_0200scr/BMX2/BMXNet/BMXNetParameterCollection.cs

using System;
using System.Data;
using System.Collections;
using System.Globalization;

namespace IndianHealthService.BMXNet
{
        /*
         * Because IDataParameterCollection is primarily an IList,
         * the sample can use an existing class for most of the implementation.
         */
        public class BMXNetParameterCollection : ArrayList, IDataParameterCollection
        {
                public object this[string index] 
                {
                        get
                        {
                                return this[IndexOf(index)];
                        }
                        set
                        {
                                this[IndexOf(index)] = value;
                        }
                }

                public bool Contains(string parameterName)
                {
                        return(-1 != IndexOf(parameterName));
                }

                public int IndexOf(string parameterName)
                {
                        int index = 0;
                        foreach(BMXNetParameter item in this) 
                        {
                                if (0 == _cultureAwareCompare(item.ParameterName, parameterName))
                                {
                                        return index;
                                }
                                index++;
                        }
                        return -1;
                }

                public void RemoveAt(string parameterName)
                {
                        RemoveAt(IndexOf(parameterName));
                }

                public override int Add(object value)
                {
                        return Add((BMXNetParameter)value);
                }

                public int Add(BMXNetParameter value)
                {
                        if (((BMXNetParameter)value).ParameterName != null)
                        {
                                return base.Add(value);
                        }
                        else
                                throw new ArgumentException("parameter must be named");
                }

                public int Add(string parameterName, DbType type)
                {
                        return Add(new BMXNetParameter(parameterName, type));
                }

                public int Add(string parameterName, object value)
                {
                        return Add(new BMXNetParameter(parameterName, value));
                }

                public int Add(string parameterName, DbType dbType, string sourceColumn)
                {
                        return Add(new BMXNetParameter(parameterName, dbType, sourceColumn));
                }

                private int _cultureAwareCompare(string strA, string strB)
                {
                        return CultureInfo.CurrentCulture.CompareInfo.Compare(strA, strB, CompareOptions.IgnoreKanaType | CompareOptions.IgnoreWidth | CompareOptions.IgnoreCase);
                }
        }
}