How can I stop EF trying to update a computed column for SQL Server?

Question

I have this object map for Entity Framework:

public WordDefinitionMap(string schema)
{
    ToTable(schema + ".WordDefinition");
    HasKey(x => x.WordDefinitionId);

    Property(x => x.WordDefinitionId).HasColumnName(@"WordDefinitionId").IsRequired().HasColumnType("int").HasDatabaseGeneratedOption(System.ComponentModel.DataAnnotations.Schema.DatabaseGeneratedOption.Identity);
    Property(x => x.WordFormId).HasColumnName(@"WordFormId").IsRequired().IsUnicode(false).HasColumnType("varchar").HasMaxLength(20);
    Property(x => x.Ascii).HasColumnName(@"Ascii").IsOptional().HasColumnType("int").HasDatabaseGeneratedOption(System.ComponentModel.DataAnnotations.Schema.DatabaseGeneratedOption.Computed);

    // Foreign keys
    HasRequired(a => a.WordForm).WithMany(b => b.WordDefinitions).HasForeignKey(c => c.WordFormId); // FK_WordDefinitionWordForm
}

public class WordDefinition
{
    public int WordDefinitionId { get; set; } // WordDefinitionId (Primary key)
    public string WordFormId { get; set; } // WordFormId (length: 20)
    public int? Ascii { get; set; } // Ascii

    // Foreign keys
    public virtual WordForm WordForm { get; set; } // FK_WordDefinitionWordForm
}

When I use the Entity Framework to try to update this object, I get an exception:

The column "Ascii" cannot be modified because it is either a computed column or is the result of a UNION operator.

I thought I already instructed EF to ignore this property, but it looks like it is still trying to update it, even if it is zero. Is there a way to change the display so EF does not set this property?

Answer 1

, , .

Entity Framework , , Ascii .

, , WordDefinitionMap modelBuilder:

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
    modelBuilder.Configurations.Add(new WordDefinitionMap("mySchema"));
    //other mappings
}

: , setter private:

public int? Ascii { get; private set; } // Ascii

, EF .