OptionSetHelper

public static class OptionSetHelper
    {
        /// <summary>
        /// 通過選項值獲取選項描述
        /// </summary>
        /// <param name="crm"></param>
        /// <param name="optionSetName"></param>
        /// <param name="optionValue"></param>
        /// <returns></returns>
        public static string GetLable(IOrganizationService crm, string optionSetName, int optionValue)
        {
            RetrieveOptionSetRequest retrieveOptionSetRequest = new RetrieveOptionSetRequest
            {
                Name = optionSetName
            };

            RetrieveOptionSetResponse retrieveOptionSetResponse = (RetrieveOptionSetResponse)crm.Execute(retrieveOptionSetRequest);

            OptionSetMetadata retrievedOptionSetMetadata = (OptionSetMetadata)retrieveOptionSetResponse.OptionSetMetadata;

            OptionMetadata[] optionList = retrievedOptionSetMetadata.Options.ToArray();

            var option = retrievedOptionSetMetadata.Options.Where<OptionMetadata>(x => x.Value == optionValue).FirstOrDefault();

            if (null != option)
                return option.Label.UserLocalizedLabel.Label;
            return null;
        }

        /// <summary>
        /// 通過選項描述獲取選項值
        /// </summary>
        /// <param name="crm"></param>
        /// <param name="optionSetName"></param>
        /// <param name="optionLabel"></param>
        /// <returns></returns>
        public static int GetValue(IOrganizationService crm, string optionSetName, string optionLabel)
        {
            RetrieveOptionSetRequest retrieveOptionSetRequest = new RetrieveOptionSetRequest
            {
                Name = optionSetName
            };

            RetrieveOptionSetResponse retrieveOptionSetResponse = (RetrieveOptionSetResponse)crm.Execute(retrieveOptionSetRequest);

            OptionSetMetadata retrievedOptionSetMetadata = (OptionSetMetadata)retrieveOptionSetResponse.OptionSetMetadata;

            OptionMetadata[] optionList = retrievedOptionSetMetadata.Options.ToArray();

            var option = retrievedOptionSetMetadata.Options.Where<OptionMetadata>(x => x.Label.UserLocalizedLabel.Label == optionLabel).FirstOrDefault();

            if (null != option)
                return option.Value.Value;
            return 0;
        }
    }