public void ReadMultipleTags(List<TagInfo> i_Tags, bool i_ThrowExceptionIfPartOfReadingFailed)
        {
            List<UAReadArguments> uaReadArguments = new List<UAReadArguments>();
            UAReadArguments uaReadArgument = null;
            StringBuilder tagsNames = new StringBuilder("");
            ValueResult[] valueResults = null;
            string nodeId = null;
            string messageToUser = null;
            int numOfReadingTagsFailed = 0;
 
            foreach (TagInfo taginfo in i_Tags)
            {
                nodeId = GetNodeId(taginfo.UAEndpointDescriptor, taginfo.TagName);
 
                if (taginfo.UAEndpointDescriptor == null)
                {
                    throw new Exception("UAEndpointDescriptor is null");
                }
 
                if (nodeId == null)
                {
                    throw new Exception(string.Format("tag wasnt found for UAEndpointDescriptor [{0}] tag name [{1}]", taginfo.UAEndpointDescriptor, taginfo.TagName));
                }
 
                tagsNames.AppendFormat(@"[{0}] , ", taginfo.TagName);
 
                uaReadArgument = new UAReadArguments();
                uaReadArgument.EndpointDescriptor = taginfo.UAEndpointDescriptor;
                uaReadArgument.NodeDescriptor = nodeId;
                uaReadArguments.Add(uaReadArgument);
            }
 
            if (uaReadArguments.Count > 0)
            {
                valueResults = m_EasyUAClient.ReadMultipleValues(uaReadArguments.ToArray());
            }
 
            if (valueResults != null)
            {
                for (int i = 0; i < valueResults.Length; i++)
                {
                    if (valueResults[i].Succeeded)
                    {
                        i_Tags[i].Value = valueResults[i].Value;
                    }
                    else
                    {
                        numOfReadingTagsFailed++;
                        messageToUser = string.Format("Error reading from opc server [{0}] tag [{1}] : {2}", uaReadArguments[i].EndpointDescriptor, uaReadArguments[i].NodeDescriptor, valueResults[i].Exception.Message);
                        m_Logger.LogErrorAndWriteToDB(m_ServiceName, messageToUser);
                    }
                }               
            }
 
            if (valueResults == null ||
                numOfReadingTagsFailed == uaReadArguments.Count ||
                (i_ThrowExceptionIfPartOfReadingFailed == true &&
                numOfReadingTagsFailed >= 1))
            {
                throw new Exception(string.Format("ReadMultipleTags Error : Failed to read tags {0}", tagsNames.ToString().Substring(0, tagsNames.ToString().Length - 3)));
            }
        }