Save (Insert) array list into MySQL Database using Entity Framework in ASP.Net MVC

Save array list into MySQL Database using Model binding approach in MVC

Please let me know how to save 'PearlProject' property values (array list) from the Controller into DB?

Do I also have to modify the Model class?

I have a ViewModel Class:

namespace WebApp.ViewModel
{
    public class MappingStudyViewModel
    {
        public string StudyId { get; set; }

        [NotMapped]
        public string StudyId1ToMany { get; set; }
        public List<HdrFdpStudy> StudyList { get; set; }

        public string ScenarioId { get; set; }
        public List<HdrFdpScenarios> ScenarioList { get; set; }

        public string ProjectId { get; set; }

        [NotMapped]
        public string[] MultipSelectProjectId { get; set; }
        public List<HdrPearlProject> ProjectList { get; set; }
        

        public IEnumerable<Mapping> Mapping { get; set; }

        public int Id { get; set; }
        public IEnumerable<MappingDetails> MappingDetails { get; set; }
    }
}

Controller Code:

[HttpPost]
public IActionResult Save(MappingStudyViewModel mappingStudyViewModel, string rdMappingType, string chkStatus)
{
	mappingStudyViewModel.ProjectList = BindProjectDDL();
	mappingStudyViewModel.MultipSelectProjectId = [ 1, 4, 9, 3];

	var getMultiProjectName = (from x in mappingStudyViewModel.ProjectList.ToList()
							  where mappingStudyViewModel.MultipSelectProjectId.Contains(x.ProjectId)
							  select x.ProjectName).Distinct().ToList();
					

	var mMapping = new Mapping()
	{
		MappingType = rdMappingType,
		RunState = chkStatus
	};
	_repository.Add(mMapping);

        int LatestMappingId = mMapping.MappingId;
	
	var mMappingDetails = new MappingDetails()
	{
		MappingId = LatestMappingId,
		FdpStudy = getStudyNameFor1ToMany,
		FdpScenario = getScenarioName.Text.ToString(),
		PearlProject = ?? // how to save 'getMultiProjectName' array list items into DB ?? 
	};					
}

Thank you in advance