在 VS2017 中使用 scripttask 时调用的目标已抛出异常

Question

我的目标是将数据从 Oracle 加载到 Excel。我正在使用以下代码

#region Help:  Introduction to the script task
/* The Script Task allows you to perform virtually any operation that can be accomplished in
 * a .Net application within the context of an Integration Services control flow. 
 * 
 * Expand the other regions which have "Help" prefixes for examples of specific ways to use
 * Integration Services features within this script task. */
#endregion


#region Namespaces
using System;
using System.Data;
using System.IO;
using System.Data.OleDb;
using Oracle.DataAccess.Client;
#endregion

namespace ST_61034037a64840399d3ad5467ff6efa2
{
    /// <summary>
    /// ScriptMain is the entry point class of the script.  Do not change the name, attributes,
    /// or parent of this class.
    /// </summary>
    [Microsoft.SqlServer.Dts.Tasks.ScriptTask.SSISScriptTaskEntryPointAttribute]
    public partial class ScriptMain : Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase
    {
        public void Main()
        {
            // I have added below code.

            string datetime = DateTime.Now.ToString("yyyyMMdd");
            try
            {
                //Declare Variables
                string ExcelFileName = Dts.Variables["User::ExcelFileName"].Value.ToString();
                string FolderPath = Dts.Variables["User::FolderPath"].Value.ToString();
                string TableName = Dts.Variables["User::TableName"].Value.ToString();
                string SheetName = Dts.Variables["User::SheetName"].Value.ToString();
                ExcelFileName = ExcelFileName + "_" + datetime;

                OleDbConnection Excel_OLE_Con = new OleDbConnection();
                OleDbCommand Excel_OLE_Cmd = new OleDbCommand();

                //Construct ConnectionString for Excel
                string connstring = "Provider=Microsoft.ACE.OLEDB.12.0" + "Data Source=" + FolderPath + ExcelFileName
                    + ";" + "Extended Properties = 'Excel 8.0;HDR=YES;";

                //< add key = "Excel07ConnectionString" value = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties='Excel 8.0;HDR=YES'" />

                   //drop Excel file if exists
                   File.Delete(FolderPath + "\\" + ExcelFileName + ".xlsx");

                //USE ADO.NET Connection from SSIS Package to get data from table
                //SqlConnection myADONETConnection = new SqlConnection();
                OracleConnection oracleConnection = new OracleConnection();
                oracleConnection = (OracleConnection)(Dts.Connections["DBConn"].AcquireConnection(Dts.Transaction) as OracleConnection);

                //Load Data into DataTable from SQL ServerTable
                // Assumes that connection is a valid SqlConnection object.
                string queryString =
                  "SELECT  COUNTRY, T.NATIONALITY,NATION_TREP_CODE.REP_CODE_DESC ,T.NATIONAL_ID1,NATIONAL1_TREP_CODE.REP_CODE_DESC AS NATIONAL_ID_CARDTYPE_DESC FROM TUER_ADDRESS_V TC INNER JOIN TPER_DET T ON T.PERSON_ID = TC.PERSON_ID LEFT OUTER JOIN TREP_CODE NATION_TREP_CODE ON T.NATIONALITY = NATION_TREP_CODE.REP_CODE AND NATION_TREP_CODE.REP_CODE_TYPE_ID = 'NATION' LEFT OUTER JOIN TREP_CODE NATIONAL1_TREP_CODE ON T.NATIONAL_ID1 = NATIONAL1_TREP_CODE.REP_CODE AND NATIONAL1_TREP_CODE.REP_CODE_TYPE_ID = 'NATIONAL' WHERE T.STAFF_ID IS NOT NULL fetch next 500 rows only;";
                OracleDataAdapter adapter = new OracleDataAdapter(queryString, oracleConnection);
                DataSet ds = new DataSet();
                adapter.Fill(ds);


                //Get Header Columns
                string TableColumns = "";

                // Get the Column List from Data Table so can create Excel Sheet with Header
                foreach (DataTable table in ds.Tables)
                {
                    foreach (DataColumn column in table.Columns)
                    {
                        TableColumns += column + "],[";
                    }
                }

                // Replace most right comma from Columnlist
                TableColumns = ("[" + TableColumns.Replace(",", " Text,").TrimEnd(','));
                TableColumns = TableColumns.Remove(TableColumns.Length - 2);
                //MessageBox.Show(TableColumns);


                //Use OLE DB Connection and Create Excel Sheet
                Excel_OLE_Con.ConnectionString = connstring;
                Excel_OLE_Con.Open();
                Excel_OLE_Cmd.Connection = Excel_OLE_Con;
                Excel_OLE_Cmd.CommandText = "Create table " + SheetName + " (" + TableColumns + ")";
                Excel_OLE_Cmd.ExecuteNonQuery();


                //Write Data to Excel Sheet from DataTable dynamically
                foreach (DataTable table in ds.Tables)
                {
                    String sqlCommandInsert = "";
                    String sqlCommandValue = "";
                    foreach (DataColumn dataColumn in table.Columns)
                    {
                        sqlCommandValue += dataColumn + "],[";
                    }

                    sqlCommandValue = "[" + sqlCommandValue.TrimEnd(',');
                    sqlCommandValue = sqlCommandValue.Remove(sqlCommandValue.Length - 2);
                    sqlCommandInsert = "INSERT into " + SheetName + "(" + sqlCommandValue.TrimEnd(',') + ") VALUES(";

                    int columnCount = table.Columns.Count;
                    foreach (DataRow row in table.Rows)
                    {
                        string columnvalues = "";
                        for (int i = 0; i < columnCount; i++)
                        {
                            int index = table.Rows.IndexOf(row);
                            columnvalues += "'" + table.Rows[index].ItemArray[i] + "',";

                        }
                        columnvalues = columnvalues.TrimEnd(',');
                        var command = sqlCommandInsert + columnvalues + ")";
                        Excel_OLE_Cmd.CommandText = command;
                        Excel_OLE_Cmd.ExecuteNonQuery();
                    }

                }
                Excel_OLE_Con.Close();
                //Dts.TaskResult = (int)ScriptResults.Success;
            }
            catch (Exception exception)
            {

                // Create Log File for Errors
                using (StreamWriter sw = File.CreateText(Dts.Variables["User::FolderPath"].Value.ToString() + "\\" +
                    Dts.Variables["User::ExcelFileName"].Value.ToString() + datetime + ".log"))
                {
                    sw.WriteLine(exception.ToString());
                    
                   
                }
            }
        }
    }
}

使用.dll

但得到一个错误

进度选项卡显示错误为“错误：无法加载文件或程序集‘Oracle.DataAccess，版本=4.122.1.0，文化=中性，PublicKeyToken=89b483f429c47342’或其依赖项之一。系统找不到文件指定。”。

我使用的是 VS2017 并且没有在本地安装任何 Oracle DB。使用 Oracle 连接管理器从服务器获取记录。

提前致谢。