public async Task <TEntity> Add(TEntity entity)
{
try
{
dbContext.Add(entity);
await dbContext.SaveChangesAsync();
return(entity);
}
catch (Exception ex)
{
throw new Exception($"Couldn't add entity: {ex.Message}");
}
}
private async Task <bool> SaveChangesAsync()
{
if (!_dbContext.ChangeTracker.HasChanges())
{
return(true);
}
int count = 0;
try
{
count = await _dbContext.SaveChangesAsync();
}
catch (Microsoft.EntityFrameworkCore.DbUpdateConcurrencyException ex)
{
if (!string.IsNullOrEmpty(ex.Message) &&
(ex.Message.StartsWith("Database operation expected to affect 1 row(s)") || // This one comes from SQL server
ex.Message == "Attempted to update or delete an entity that does not exist in the store.")) // This one comes from EF in-memory db
{
return(false);
}
throw;
}
return(count > 0);
}
