如何从F＃中的SQL查询获取输出参数

Question

I have SQL query, where I have two parameters and one output parameter (varchar). How I should call the procedure and get the output parameter? Thanks.

Answer 1

First of all you have to connect to your db. What technology are you using?

In any case it could be something like that (code is written for c# & Oracle, but it will give you an idea how to solve your case):

IDbConnection dbConnection = new OracleConnection(your_connectionstring)
var param = new OracleDyamicParameters(); 
param.Add("out_result", OracleDbType.Int64, ParameterDirection.Output);
string query = "Your_proc_Name";
await SqlMapper.QueryAsync<MyReturnClass>(dbConnection, query, param: param, commandType: CommandType.StoredProcedure);
db_res.Result = param.GetOutResult();