Asynchronous operation Repository

ABP 1.4.1

var query = _userTypeRepository.GetAll();
var total =  query.CountAsync();
var rows =  query.Skip(input.Rows * (input.Page - 1)).Take(input.Rows).ToListAsync();
return new GetXXXOutput { Total = await total, Rows = await rows };

The above code will randomly appear the following error:

"Unexpected connection state. When using a wrapping provider ensure that the StateChange event is implemented on the wrapped DbConnection."
"A second operation started on this context before a previous asynchronous operation completed. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context. Any instance members are not guaranteed to be thread safe."
"An error occurred while executing the command definition. See the inner exception for details."

It seems that EF DBContext is not thread safe, if we want to abp in the data on the operation, there is any good way?

[hikalkan]

BTW, Async pattern’s advantage is not multi-threading. It’s a different topic.

[hikalkan]

You missed “await” keywords for CountAsync and ToListAsync