Error in a linq expression ASP .NET

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public enum EnSituation
    {
        Sit1 = 1,
        Sit2,

public virtual Person Person (get; set;)
public EnSituation Situation
        {
            get
            {
                if (this.Sit1)
                    return EnSituation.Sit1;

                if (this.Sit2)
                {
                    if (this.Sit2)
                        return EnSituation.Sit2;
                    else
                        return EnSituation.Sit;
                }

            }
        }
		
		
var dataList = this.GetByFilters(filters)
	.Select(_ => new DataItem
	{
		Id = _.Id.ToString(),
		Name = _.Person.Name + " (" + _.Situation.ToString() + ")",
	}); 
	return await this.rep.ToListAsync(dataList);

What I have tried:

when i run this code i recive the message error: Common.Domain.CustomExceptions.CustomValidationException: 'Exception: The specified type member 'Stituation' is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported.'
Can anyone help me please?

Posted 23-Apr-20 6:15am

Fernando_Costa

Updated 23-Apr-20 6:32am

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Richard Deeming · Answer 1 · 2020-04-23T06:33:00

C# code inside a property getter cannot be translated to a SQL query. You cannot use the Situation property in a LINQ query that's executed against the database.

Try:

C#

var rawList = await this.GetByFilters(filters).ToListAsync();

var dataList = rawList
    .Select(_ => new DataItem
    {
        Id = _.Id.ToString(),
        Name = _.Person.Name + " (" + _.Situation.ToString() + ")",
    })
    .ToList();

Or:

C#

var dataList = this.GetByFilters(filters)
    .AsEnumerable()
    .Select(_ => new DataItem
    {
        Id = _.Id.ToString(),
        Name = _.Person.Name + " (" + _.Situation.ToString() + ")",
    })
    .ToList();