c# - [A]Oracle.ManagedDataAccess.Client.OracleParameter 不能转换为 [B]Oracle.ManagedDataAccess.Client.OracleParameter

Question

我在运行我的代码以从 Oracle DB 获取数据时出现以下错误。

[A]Oracle.ManagedDataAccess.Client.OracleParameter cannot be cast to [B]Oracle.ManagedDataAccess.Client.OracleParameter. Type A originates from 'Oracle.ManagedDataAccess, Version=4.122.18.3, Culture=neutral, PublicKeyToken=89b483f429c47342' in the context 'LoadFrom' at location 'd:\Users\mukadfar\AppData\Local\Temp\Temporary ASP.NET Files\vs\02d43168\78988466\assembly\dl3\95159e45\00d2c436_a83bd401\Oracle.ManagedDataAccess.dll'. Type B originates from 'Oracle.ManagedDataAccess, Version=4.122.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342' in the context 'Default' at location 'd:\Users\mukadfar\AppData\Local\Temp\Temporary ASP.NET Files\vs\02d43168\78988466\assembly\dl3\0b972c52\00ac59cd_7dd5d201\Oracle.ManagedDataAccess.dll'.

这是我的代码:

var param1 = "K60";
                var param2 = "2018.09.14";
                var param3 = "2018.09.14";
                var param4 = string.Empty;
                var param5 = string.Empty;
                var param6 = string.Empty;
                var param7 = string.Empty;
                var param8 = string.Empty;
                var param9 = string.Empty;
                var param10 = string.Empty;
                var param11 = string.Empty;
                var param12 = string.Empty;
                var param13 = string.Empty;
                var param14 = string.Empty;
                var param15 = string.Empty;
                var param16 = string.Empty;
                var param17 = string.Empty;
                var param18 = string.Empty;
                var parameters = new[]
                {
                    new OracleParameter("wr_proccode_PM_cmb_C179", OracleDbType.Varchar2, 100, param1 != null ? (object)param1 : DBNull.Value, ParameterDirection.Input),
                    new OracleParameter("wr_start_day_C179", OracleDbType.Varchar2, 100, param2 != null ? (object)param2 : DBNull.Value, ParameterDirection.Input),
                    new OracleParameter("wr_end_day_C179", OracleDbType.Varchar2, 100, param1 != null ? (object)param3 : DBNull.Value, ParameterDirection.Input),
                    new OracleParameter("wr_operating_efficiency_total", OracleDbType.Decimal, 4000, param4 != null ? (object)param4 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_time_efficiency", OracleDbType.Decimal, 4000, param5 != null ? (object)param5 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_tons_efficiency_total", OracleDbType.Decimal, 4000, param6 != null ? (object)param6 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_pope_gross", OracleDbType.Decimal, 4000, param7 != null ? (object)param7 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_packed_net_prod", OracleDbType.Decimal, 4000, param8 != null ? (object)param8 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_bottom_waste", OracleDbType.Decimal, 4000, param9 != null ? (object)param9 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_avg_gm2", OracleDbType.Decimal, 4000, param10 != null ? (object)param10 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_unplanned_shutdown_pcs", OracleDbType.Int32, 4000, param11 != null ? (object)param11 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_grade_change_pcs", OracleDbType.Int32, 4000, param12 != null ? (object)param12 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_break_pcs", OracleDbType.Int32, 4000, param13 != null ? (object)param13 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_break_hr", OracleDbType.Varchar2, 4000, param14 != null ? (object)param14 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_unplanned_shutdown_hr", OracleDbType.Varchar2, 4000, param15 != null ? (object)param15 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_packed_net_prod_pcs", OracleDbType.Int32, 4000, param16 != null ? (object)param16 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_rewinder_net_prod_pcs", OracleDbType.Decimal, 4000, param17 != null ? (object)param17 : DBNull.Value, ParameterDirection.InputOutput),
                    new OracleParameter("wr_warehouse_post_waste", OracleDbType.Decimal, 4000, param18 != null ? (object)param18 : DBNull.Value, ParameterDirection.InputOutput)
                };

                var procedure = $"Begin TP_BALELINE.getNextPlannedObjects(:wr_proccode_PM_cmb_C179, :wr_start_day_C179, :wr_end_day_C179, :wr_operating_efficiency_total, :wr_time_efficiency, :wr_tons_efficiency_total, :wr_pope_gross, :wr_packed_net_prod, :wr_bottom_waste, :wr_avg_gm2, :wr_unplanned_shutdown_pcs, :wr_grade_change_pcs, :wr_break_pcs, :wr_break_hr, :wr_unplanned_shutdown_hr, :wr_packed_net_prod_pcs, :wr_rewinder_net_prod_pcs, :wr_warehouse_post_waste); END;";

                this.databaseContext.ExecuteSqlCommand(
                procedure,
                parameters[0],
                parameters[1],
                parameters[2],
                parameters[3],
                parameters[4],
                parameters[5],
                parameters[6],
                parameters[7],
                parameters[8],
                parameters[9],
                parameters[10],
                parameters[11],
                parameters[12],

在 ExecuteSqlCommand 行获取错误。

Answer 1

您需要的所有详细信息都在错误消息中，这里是一个缩短和强调的版本:

[A]Oracle.ManagedDataAccess.Client.OracleParameter cannot be cast to [B]Oracle.ManagedDataAccess.Client.OracleParameter. Type A originates from 'Oracle.ManagedDataAccess, Version=4.122.18.3, (snip some text) Type B originates from 'Oracle.ManagedDataAccess, Version=4.122.1.0, Culture=neutral, (snip)

所以这里的问题是您有两个不同的 Oracle.ManagedDataAccess 副本和版本，并且您在混合它们之间的类型。

类型的完全限定名称不仅仅是文本，它还包含包含它的程序集的完整版本和签名，因此即使这两种类型在源代码方面可能 100% 相同，甚至编译- 明智的是，它们来自两个不同版本的程序集这一事实使它们不兼容。

您要做的是弄清楚两个程序集的引用位置，弄清楚您要使用哪个，并更正其他引用，使它们全部引用相同的程序集的版本。

这应该会使错误消失。