如何从.NET存储过程返回的Oracle输出参数 [英] How to return oracle output parameters from a stored procedure in .NET

问题描述

我有试图让数据从SP背面的严重问题。我试图做这样的：

I am having serious issues trying to get the data back from the SP. I was trying to do it like this:

OracleCommand ora_cmd = new OracleCommand("a6r1.PR_ABC_P_ALTA_TARJETA_PAYWARE", ora_conn);
                    ora_cmd.BindByName = true;
                    ora_cmd.CommandType = CommandType.StoredProcedure;

                    int success= new int();

                    ora_cmd.Parameters.Add("Lc_Param_Issuer", OracleDbType.Varchar2, issuer, ParameterDirection.Input);
                    ora_cmd.Parameters.Add("Ln_Param_Valid_Product", OracleDbType.Varchar2, DropDownListProducto.SelectedValue.ToString(), ParameterDirection.Input);
                    ora_cmd.Parameters.Add("Ln_Param_Total", OracleDbType.Int32, parsed, ParameterDirection.Input);
                    ora_cmd.Parameters.Add("Lc_Param_User", OracleDbType.Varchar2, user, ParameterDirection.Input);
                    ora_cmd.Parameters.Add("Lc_Encrypted_Password", OracleDbType.Varchar2, pass, ParameterDirection.Input);
                    ora_cmd.Parameters.Add("Lc_Exito", OracleDbType.Int32, success, ParameterDirection.Output);
                    ora_cmd.Parameters.Add("Lc_Error", OracleDbType.Varchar2, errorMessage, ParameterDirection.Output);

但它没有返回任何变量sucess或的errorMessage。我究竟做错了什么？有没有更好的办法？当甲骨文直接执行它工作正常。

But it is not returning anything to the variables sucess or errorMessage. What am I doing wrong? Is there a better way? It works fine when executed directly on Oracle.

推荐答案

看来你不能用现有的变量作为输出参数，试试这种方式，而不是

It seems you cannot use existing variable as output parameter, try this way instead

ora_cmd.Parameters.Add("Lc_Exito", OracleDbType.Int32).Direction = ParameterDirection.Output;

ora_cmd.ExecuteNonQuery();

if (ora_cmd.Parameters["Lc_Exito"].value == 0)

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