Error While Enabling Code-First Migrations On Mobile Services Database

Question

I have an Azure Mobile Services project (C# backend) that I recently created and attached to an Azure SQL database. I have been trying to enable Code-First Migrations on that ba

Answer 1

I just had the same issue.

It is caused by the definition of EntityData that is our base class:

public class OrgTest : EntityData
{
    public string Prop1 { get; set; }
}

I replaced EntityData with my own implementation "CustomEntity" where I removed the attribute [Index(IsClustered = true)] on the CreatedAt column:

public abstract class CustomEntity : ITableData
{
   // protected CustomEntity();

    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    [TableColumn(TableColumnType.CreatedAt)]
    public DateTimeOffset? CreatedAt { get; set; }
    [TableColumn(TableColumnType.Deleted)]
    public bool Deleted { get; set; }
    [Key]   
    [TableColumn(TableColumnType.Id)]
    public string Id { get; set; }
    [DatabaseGenerated(DatabaseGeneratedOption.Computed)]
    [TableColumn(TableColumnType.UpdatedAt)]
    public DateTimeOffset? UpdatedAt { get; set; }
    [TableColumn(TableColumnType.Version)]
    [Timestamp]
    public byte[] Version { get; set; }
} 

and now I inherit from this one:

public class OrgTest : CustomEntity   // EntityData
{
    public string Prop1 { get; set; }
}

Probably I will have troubles further on, but for the time being I can create my model! Hope you can also start like this!