public void Add(ref TEntity entity)
{
try
{
DbSet.Add(entity);
_context.SaveChanges();
}
catch (DbUpdateException dbEx)
{
var entry = _context.Entry(entity);
if (entry.State == EntityState.Added)
{
DbSet.Remove(entity);
}
CustomDbExceptionHandler.ThrowHandledError(dbEx);
throw;
}
catch (DbEntityValidationException ex)
{
// Retrieve the error messages as a list of strings.
var errorMessages = ex.EntityValidationErrors.SelectMany(x => x.ValidationErrors).Select(x => x.ErrorMessage);
// Join the list to a single string.
var fullErrorMessage = string.Join("; ", errorMessages);
// Combine the original exception message with the new one.
var exceptionMessage = string.Concat(ex.Message, " The validation errors are: ", fullErrorMessage);
// Throw a new DbEntityValidationException with the improved exception message.
throw new DbEntityValidationException(exceptionMessage, ex.EntityValidationErrors);
}
}
public void Delete(object id)
{
try
{
var entity = DbSet.Find(id);
DbSet.Remove(entity);
_context.SaveChanges();
}
catch (DbUpdateException dbEx)
{
CustomDbExceptionHandler.ThrowHandledError(dbEx);
throw;
}
}
public void Update(TEntity entity)
{
try
{
DbSet.AsNoTracking();
_context.Entry(entity).State = EntityState.Modified;
_context.SaveChanges();
}
catch (DbUpdateException dbEx)
{
CustomDbExceptionHandler.ThrowHandledError(dbEx);
throw;
}
}