===>>> Erreur sur un DTS sur un Script

Bonjour,
Je maitrise bien SSIS mais je fais que très rarement des script #net

J'ai essayé de tester un script assez simple de transformation de l'extention du fichier de XLSX vers CSV
J'ai suivi étape par étape les instuctions de cette vidéo mais j'ai ce message d'erreur incomphérensible :

[QUOTE] at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
at Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTATaskScriptingEngine.ExecuteScript()[/QUOTE]

J'ai utilisé ce code :

#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 
Namespacesusing System;
using System.Data;using Microsoft.SqlServer.Dts.Runtime;using System.Windows.Forms;
using System.Data.OleDb;using System.IO;#endregionnamespace ST_65fdc59ba1d84669ab4871f6f7b6f8f1{    /// <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 {        #region Help:  Using Integration Services variables and parameters in a script        /* To use a variable in this script, first ensure that the variable has been added to * either the list contained in the ReadOnlyVariables property or the list contained in * the ReadWriteVariables property of this script task, according to whether or not your* code needs to write to the variable.  To add the variable, save this script, close this instance of* Visual Studio, and update the ReadOnlyVariables and * ReadWriteVariables properties in the Script Transformation Editor window.* To use a parameter in this script, follow the same steps. Parameters are always read-only.* * Example of reading from a variable:*  DateTime startTime = (DateTime) Dts.Variables["System::StartTime"].Value;* * Example of writing to a variable:*  Dts.Variables["User::myStringVariable"].Value = "new value";* * Example of reading from a package parameter:*  int batchId = (int) Dts.Variables["$Package::batchId"].Value;*  * Example of reading from a project parameter:*  int batchId = (int) Dts.Variables["$Project::batchId"].Value;* * Example of reading from a sensitive project parameter:*  int batchId = (int) Dts.Variables["$Project::batchId"].GetSensitiveValue();* */        #endregion        #region Help:  Firing Integration Services events from a script        /* This script task can fire events for logging purposes.* * Example of firing an error event:*  Dts.Events.FireError(18, "Process Values", "Bad value", "", 0);* * Example of firing an information event:*  Dts.Events.FireInformation(3, "Process Values", "Processing has started", "", 0, ref fireAgain)* * Example of firing a warning event:*  Dts.Events.FireWarning(14, "Process Values", "No values received for input", "", 0);* */        #endregion        #region Help:  Using Integration Services connection managers in a script        /* Some types of connection managers can be used in this script task.  See the topic * "Working with Connection Managers Programatically" for details.* * Example of using an ADO.Net connection manager:*  object rawConnection = Dts.Connections["Sales DB"].AcquireConnection(Dts.Transaction);*  SqlConnection myADONETConnection = (SqlConnection)rawConnection;*  //Use the connection in some code here, then release the connection*  Dts.Connections["Sales DB"].ReleaseConnection(rawConnection);         ** Example of using a File connection manager*  object rawConnection = Dts.Connections["Prices.zip"].AcquireConnection(Dts.Transaction);*  string filePath = (string)rawConnection;*  //Use the connection in some code here, then release the connection*  Dts.Connections["Prices.zip"].ReleaseConnection(rawConnection);* */        #endregion  /// <summary>        /// This method is called when this script task executes in the control flow.        /// Before returning from this method, set the value of Dts.TaskResult to indicate success or failure.        /// To open Help, press F1.        /// </summary>  public void Main()  {            // TODO: Add your code here            string SourceFolderPath = Dts.Variables["User::SourcePath"].Value.ToString();            string DestinationFolderPath = Dts.Variables["User::DestinationPath"].Value.ToString();            string FileDelimited = Dts.Variables["User::FileDelimited"].Value.ToString();            var directory = new DirectoryInfo(SourceFolderPath);            FileInfo[] files = directory.GetFiles();            //Declare and initilize variables            string fileFullPath = "";            //Get one Book(Excel file at a time)            foreach (FileInfo file in files)            {                string filename = "";                fileFullPath = SourceFolderPath + "\\" + file.Name;                filename = file.Name.Replace(".xlsx", "");                MessageBox.Show(fileFullPath);                //Create Excel Connection                string ConStr;                string HDR;                HDR = "YES";                ConStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileFullPath + ";Extended Properties=\"Excel 12.0;HDR=" + HDR + ";IMEX=0\"";                OleDbConnection cnn = new OleDbConnection(ConStr);                //Get Sheet Name                cnn.Open();                DataTable dtSheet = cnn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);                string sheetname;                sheetname = "";                foreach (DataRow drSheet in dtSheet.Rows)                {                    if (drSheet["TABLE_NAME"].ToString().Contains("$"))                    {                        sheetname = drSheet["TABLE_NAME"].ToString();                        //Display Sheet Name , you can comment it out                        // MessageBox.Show(sheetname);                        //Load the DataTable with Sheet Data                        OleDbCommand oconn = new OleDbCommand("select * from [" + sheetname + "]", cnn);                        //cnn.Open();                        OleDbDataAdapter adp = new OleDbDataAdapter(oconn);                        DataTable dt = new DataTable();                        adp.Fill(dt);                        //drop $from sheet name                        sheetname = sheetname.Replace("$", "");                        //Create CSV File and load data to it from Sheet                        StreamWriter sw = new StreamWriter(DestinationFolderPath + "\\" + filename + "_" + sheetname + ".csv", false);                        int ColumnCount = dt.Columns.Count;                        // Write the Header Row to File                        for (int i = 0; i < ColumnCount; i++)                        {                            sw.Write(dt.Columns[i]);                            if (i < ColumnCount - 1)                            {                                sw.Write(FileDelimited);                            }                        }                        sw.Write(sw.NewLine);                        // Write All Rows to the File                        foreach (DataRow dr in dt.Rows)                        {                            for (int i = 0; i < ColumnCount; i++)                            {                                if (!Convert.IsDBNull(dr[i]))                                {                                    sw.Write(dr[i].ToString());                                }                                if (i < ColumnCount - 1)                                {                                    sw.Write(FileDelimited);                                }                            }                            sw.Write(sw.NewLine);                        }                        sw.Close();                    }                }            }            Dts.TaskResult = (int)ScriptResults.Success;  }        #region ScriptResults declaration        /// <summary>        /// This enum provides a convenient shorthand within the scope of this class for setting the        /// result of the script.        ///         /// This code was generated automatically.        /// </summary>        enum ScriptResults        {            Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success,            Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure        };        #endregion }}

EDIT : correction des balises de code ( ajout du LANGAGE)

La vidéo que j'ai suivi : https://www.youtube.com/watch?v=JsFY3YckHOc