How to Override SaveChangesAsync in Net Core?

Question

How do I override SaveChangesAsync in Net Core Entity Framework? Receiving the error below,

public override async Task<int> SaveChangesAsync()
{
    ApplyAuditInformation();
    return await base.SaveChangesAsync();
}

Error: 'TestDBContext.SaveChangesAsync()': no suitable method found to override

Answer 1

The signature of SaveChangesAsync requires a CancellationToken .

public override Task<int> SaveChangesAsync(CancellationToken cancellationToken = new CancellationToken())
{
    ApplyAuditInformation();
    return base.SaveChangesAsync(cancellationToken);
}

You'd only need to declare the method as async if you need to await something.

For example, if your ApplyAuditInformation needs to be " await ed":

public async override Task<int> SaveChangesAsync(CancellationToken cancellationToken = new CancellationToken())
{
    await ApplyAuditInformationAsync();
    return base.SaveChangesAsync(cancellationToken);
}