如何并行执行这个异步操作

Question

在我的应用程序中，我有一个这样的方法，

private async Task LoadDataSetsAsyncOld()
{
    if(Cache["QISRUID317"+Session.SessionID]==null)
    {
        using (IParameterProviderBusinessLogic parameterProviderBusiness = new ParameterProviderBusinessLogic())
        {
            dataSet = await parameterProviderBusiness.GetOutlierParametersAsync().ConfigureAwait(false);
        
            using (ILocationProviderBusinessLogic _locationProviderBusinessLogic = new LocationProviderBusinessLogic((BusinessLogicBase)parameterProviderBusiness))
            {
                dataSet.Merge(await _locationProviderBusinessLogic.GetLocationProviderAsync());
            }

            using (ISamplePointProviderBusinessLogic _samplePointProviderBusinessLogic = new SamplePointProviderBusinessLogic((BusinessLogicBase)parameterProviderBusiness))
            {
                dataSet.Merge(await _samplePointProviderBusinessLogic.GetSamplePointProviderAsync());
            }

            using (IPMDOperationsProviderBusinessLogic operationsProviderDataAccess = new PMDOperationsProviderBusinessLogic((BusinessLogicBase)parameterProviderBusiness))
            {
                dataSet.Merge(await operationsProviderDataAccess.GetPMDOperationsAsync());
            }

            using (IMethodOfMeasureProviderBusinessLogic methodOfMeasureProviderBusinessLogic = new MethodOfMeasureProviderBusinessLogic((BusinessLogicBase)parameterProviderBusiness))
            {
                dataSet.Merge(await methodOfMeasureProviderBusinessLogic.GetMethodOfMeasureAsync().ConfigureAwait(false));
            }

            using (IPackerProviderBusinessLogic packerProviderBusinessLogic = new PackerProviderBusinessLogic((BusinessLogicBase)parameterProviderBusiness))
            {
                DataSet packerDs = await packerProviderBusinessLogic.GetPackerProviderAsync().ConfigureAwait(false);
                packerDs.Relations.RemoveAt(0);
                packerDs.AcceptChanges();
                dataSet.Merge(packerDs);
            }

            using (IFilterTypeProviderBusinessLogic filterTypeProviderBusinessLogic = new FilterTypeProviderBusinessLogic((BusinessLogicBase)parameterProviderBusiness))
            {
                dataSet.Merge(await filterTypeProviderBusinessLogic.GetFilterTypeProviderAsync().ConfigureAwait(false));
            }

            using (IFilterMakerProviderBusinessLogic _filterMakerProviderBusinessLogic = new FilterMakerProviderBusinessLogic((BusinessLogicBase)parameterProviderBusiness))
            {
                DataSet dsMaker = await _filterMakerProviderBusinessLogic.GetFilterMakerProviderAsync();
                dsMaker.Relations.RemoveAt(0);
                dsMaker.AcceptChanges();
                dataSet.Merge(dsMaker);
            }
        }

        Cache["QISRUID317" + Session.SessionID] = dataSet;
    }
}

我需要增强这个异步功能的性能，所以我计划使用

Task.WhenAll()

来并发执行方法中的任务。但我该怎么做，有可能吗，这是很好的做法吗？