public async Task <string> ReadName(int serial)
{
var inputpara = new DynamicParameters();
inputpara.Add("c1", serial, DbType.Int16, ParameterDirection.Input, null);
var outputpara = new DynamicParameters();
outputpara.Add("c2", "", DbType.String, ParameterDirection.Output, 10);
await _eventLogRepository.ExecuteSPAsync("usp_test", inputpara, outputpara);
string result = outputpara.Get <string>("c2");
return(string.IsNullOrEmpty(result) ? "no content" : result);
}