ASP.Net Core: Add items from one List to another

With the code, only the last files is added in the query list so the count of files is always 1.

How can I add all the files in the query List.

I have the following code on my page:

This is the Model for Employee:

public class Employee
{
    public string Title { get; set; }
    public string section { get; set; }
    public string EmployeeName { get; set; }
    public int employeeID { get; set; }
    public List<FileModel> Files { get; set; }
}

Below is the Model for IndividualNominFilePath

public class IndividualNominFilePath
{
    public int IndividualId { get; set; }

    public int? EmployeeId { get; set; }

    public string FilePath { get; set; }
}

In below code, I want to add FilePath in query List whenever the employeeId of IndividualNominFilePath is equal to Employee class EmployeeId

List<Employee> query = new List<Employee>();
query = await _empContext.Set<Employee>().FromSqlRaw($"EXECUTE dbo.GetIndividual").ToListAsync();

List<IndividualNominFilePath> individualNominFiles = _empContext.IndividualNominFilePaths.ToList();

foreach (var item in query)
{
    foreach (var file in individualNominFiles)
    {
        if (file.EmployeeId == item.EmployeeID)
        {
            item.Files = new List<FileModel>()
            {
                new FileModel {EmployeeNumber=file.EmployeeId,FilePath=file.UploadedFilePath }
            };
        }
    }
}