exception inmscrm

 public static void SetValueToContextOrImage(Entity contextRecord, string fieldName, object value)
        {
            if (contextRecord != null)
            {
                if (contextRecord.Contains(fieldName))
                    contextRecord.Attributes[fieldName] = value;
                else
                    contextRecord.Attributes.Add(fieldName, value);
            }
            else
            {
                throw new Exception("Record is null");
            }
        }
///////////////////////////////////////////////////

public static Entity GetCurrentEntityForRetrieve(IPluginExecutionContext context, IOrganizationService service, params string[] columns)
        {
            if (context.InputParameters.Contains("Target") && context.InputParameters["Target"] is EntityReference)
            {
                return service.Retrieve(((EntityReference)context.InputParameters["Target"]).LogicalName, ((EntityReference)context.InputParameters["Target"]).Id, new ColumnSet(columns));
            }
            else
            {
                throw new Exception("Error: the context input parameter didn't return the target EntityReference");
            }
        }////////////////////
internal static void ThrowException(Exception exception, ITracingService trace, string pluginName)
        {
            exception = exception.InnerException != null ? exception.InnerException : exception;

            trace.Trace("Error message: {0}", exception.Message);
            trace.Trace("Error StackTrace: {0}", exception.StackTrace);
            trace.Trace("Error Source: {0}", exception.Source);
            trace.Trace("Error TargetSite: {0}", exception.TargetSite);
            throw new InvalidPluginExecutionException(string.Format("An error has occured in the {0} plugin. Please download the error trace and contact the system administrator. Message: {1}", pluginName, exception.Message), exception);
        }

/////////////////

 public static void CreateErrorLog(string functionalityName, Exception ex, IOrganizationService service, ITracingService tracing, IPluginExecutionContext context)

        {

            tracing.Trace("In CreateErrorLog method.");

            tracing.Trace(ex.Message);

            Entity errorLog = new Entity("hppscm_errorlog");

            Hand.SetValueToContextOrImage(errorLog, "hvvv_name", functionalityName);

            Hand.SetValueToContextOrImage(errorLog, "hvvv_errordatetime", Handler.GetLocalTime(tracing, service, context, DateTime.UtcNow));

            Hand.SetValueToContextOrImage(errorLog, "hvvv_message", ex.Message);

            Hand.SetValueToContextOrImage(errorLog, "hvvv_stacktrace", ex.StackTrace);

            Guid errorLogId = service.Create(errorLog);

            tracing.Trace("Error Log ID: " + errorLogId);

        }