无法将类型 'System.String' 的对象转换为类型 'System.Array' Oracle 批量插入

Question

我正在尝试在 Oracle Table 中插入批量数据，但很遗憾收到此错误：

Unable to cast object of type 'System.String' to type 'System.Array'.

我试过这些链接的答案，但没有用。

why does this oracle bulk insert not work

这是我的代码：

private void InsertInTempMachineResults(ResultObject resultObject)
    {
        string command = @"INSERT INTO ANALYZERS.TEMP_MACHINE_RESULTS (SAMPLE_ID, TEST_ID, TEST_VALUES, " +
            "TEST_VALUES_SYMBOL, TEST_VALUE_UNIT, RESULT_DATE, STRING_ID, MACHINE_ID, PARSING_SOURCE) VALUES(" +
            ":sampleId, :testId, :testValue, :testValueSymbol, :testUnit, SYSDATE, :stringId, :machineId, " +
            ":parsingSource)";

        OracleCommand oracleCommand = new OracleCommand(command, Utils.Connection)
        {
            CommandType = System.Data.CommandType.Text
        };

        oracleCommand.ArrayBindCount = resultObject.ResultItems.Count;
        oracleCommand.BindByName = true;
        OracleParameter[] parameters = {
            new OracleParameter("sampleId", resultObject.SampleId),
            new OracleParameter("testId", OracleDbType.Varchar2, 
                                resultObject.ResultItems.Select(r => r.TestId).ToArray(), ParameterDirection.Input),
            new OracleParameter("testValue", OracleDbType.Varchar2, 
                                resultObject.ResultItems.Select(r => r.TestValue).ToArray(), ParameterDirection.Input),
            new OracleParameter("testValueSymbol", OracleDbType.Varchar2, 
                                resultObject.ResultItems.Select(r => r.Symbol).ToArray(), ParameterDirection.Input),
            new OracleParameter("testUnit", OracleDbType.Varchar2, 
                                resultObject.ResultItems.Select(r => r.Unit).ToArray(), ParameterDirection.Input),
            new OracleParameter("stringId", OracleDbType.Varchar2, resultObject.StringId, ParameterDirection.Input),
            new OracleParameter("machineId", OracleDbType.Varchar2, resultObject.MachineId, ParameterDirection.Input),
            new OracleParameter("parsingSource", OracleDbType.Varchar2, "C#", ParameterDirection.Input),
        };
        oracleCommand.Parameters.AddRange(parameters);
        if (Utils.Connection.State != ConnectionState.Open)
        {
            Utils.Connection.Open();
        }
        try
        {
            int result = oracleCommand.ExecuteNonQuery();
            if (result <= 0)
            {
                Console.WriteLine("ERROR_INSERT_TEMP_MACHINE_RESULTS: {0}", "Unable to add data.");
            }
        }
        catch (Exception e)
        {
            Console.WriteLine("EXCEPTION_INSERT_TEMP_MACHINE_RESULTS: {0}", e.Message);
            throw e;
        }
    }

谢谢

Answer 1

正如评论中Patrick Hofman建议的那样，如果要批量插入，则必须将所有参数转换为数组。问题已解决。

无法将类型 'System.String' 的对象转换为类型 'System.Array' Oracle 批量插入

Unable to cast object of type 'System.String' to type 'System.Array' Oracle bulk insert

c#

oracle

bulkinsert

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