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A string Variable in SSIS is not populating with the value generated in a C# script

I have a fairly simple requirement to read the filename from a location and populate a variable with the filename. I am using a script task for this task. No matter what I try, the value of the filename is not populating in the variable.
I'm using a Script task Editor. There is only one ReadWriteVariables which will hold the full name of the file.
Here is the script that I'm using:
namespace ST_f8fd828f11b64932b15f2681e86c8d94
{
using System;
using System.Data;
using System.IO;
using Microsoft.SqlServer.Dts.Runtime;
[Microsoft.SqlServer.Dts.Tasks.ScriptTask.SSISScriptTaskEntryPointAttribute]
public partial class ScriptMain : Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase
{
public void Main()
{
string p = "C:\\Users\\nthaku01\\Desktop\\NewEXPOLD.txt";
FileInfo fi = new FileInfo(p);
String fileName = fi.FullName;
Dts.Variables["User::vLastFilename"].Value = fileName.ToString();
MessageBox.Show(Dts.Variables["User::vLastFilename"].Value.ToString());
Dts.TaskResult = (int)ScriptResults.Success;
}
enum ScriptResults
{
Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success,
Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure
};
#endregion
}
}
The MessageBox displays the name(and path) of the file. However, the variable is empty.
This issue has been discussed in detail previously as well and I tried every trick. However, it is just not working for me. Please help!!
Thanks,
Navneet

The only problem with your script task that I could see is that ScriptResults was already defined for the script. I renamed your enum section and the enumerators, and I have no problem using the variable to insert the text into a db table. Here's the script task I used:
public void Main()
{
string p = "C:\\Users\\nthaku01\\Desktop\\NewEXPOLD.txt";
FileInfo fi = new FileInfo(p);
String fileName = fi.FullName;
Dts.Variables["User::vLastFilename"].Value = fileName.ToString();
MessageBox.Show(Dts.Variables["User::vLastFilename"].Value.ToString());
Dts.TaskResult = (int)eScriptResults.enumSuccess;
}
enum eScriptResults
{
enumSuccess = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success,
enumFailure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure
};

I got it resolved.
Actually, as an SSIS newbie, I was not aware that the value is assigned to the variable during the run-time does not show up in the variable window.
In the variable window, only the value mentioned at the design time shows up. I had to create a derived column and I assigned the value of the user variable to this newly created derived column. This resolved the issue I was facing.
In the Derived column transformation:
output_LastFileName <-- User::vLastFilename

"File.Exists" does not exist

I created this class "XML_Toolbox" that could be used by any of my forms to perform any of the key XML actions that i am going to be using repeatedly. So with that being said, here is that class' code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Windows.Forms;
namespace Personal_Finance_Manager
{
class XML_toolbox
{
public static void createFile (string filename, string filePath)
{
string createPath = filePath + #"\" + filename + ".txt";
if (file.exists(createPath))
{
StreamWriter outfile = new StreamWriter(createPath, true);
}
else
{
MessageBox.Show("This file already exists!!! Please choose another name!");
}
}
}
}
all the individual parts were working when called from another form up until i added the:
if (file.exists(createPath)) {}
IF statement.
Now i am getting the
The name "file" does not exist in the current context
error. I have the
using System.IO;
what else am i missing?
Thanks!

Class name is File not file, method name is Exists. C# is case-sensitive.

It's called File, not file.
File.Exists()

Cannot apply indexing with[] to an expression of type

I am creating an SSIS package and want to include a script which checks if a file exist before retrieving the file and saving that data to a table.
I have three separate variable that I have set up:
fileExistFlag Int32 0
fileName String check.txt
folderPath String C:\
My C# code looks like this, where I am checking:
public void Main()
{
// TODO: Add your code here
String fp = Dts.Variables["User::folderPath"].Value.ToString() + Dts.Variables["User::fileName"].Value.ToString();
if (File.Exists(fp))
{
Dts.Variables["User::fileExistFlag"].Value = 1;
}
MessageBox.Show(fp);
MessageBox.Show(Dts.Variables["User::fileExistFlag"].Value.ToString());
Dts.TaskResult = (int)ScriptResults.Success;
}
When I try to compile my script, I receive the following error:
Cannot apply indexing with [] to an expression of type 'Microsoft.SqlServer.Dts.Runtime.Variables for all four instances.
How can I solve the issue?
Updated code:
/*
Microsoft SQL Server Integration Services Script Task
Write scripts using Microsoft Visual C# 2008.
The ScriptMain is the entry point class of the script.
*/
using System;
using System.Data;
using Microsoft.SqlServer.Dts.Runtime;
using System.Windows.Forms;
using System.IO;
namespace ST_04f6fa3ba49a4ddeac3d3d7fc29f04f2.csproj
{
[System.AddIn.AddIn("ScriptMain", Version = "1.0", Publisher = "", Description = "")]
public partial class ScriptMain : Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase
{
#region VSTA generated code
enum ScriptResults
{
Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success,
Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure
};
#endregion
/*
The execution engine calls this method when the task executes.
To access the object model, use the Dts property. Connections, variables, events,
and logging features are available as members of the Dts property as shown in the following examples.
To reference a variable, call Dts.Variables["MyCaseSensitiveVariableName"].Value;
To post a log entry, call Dts.Log("This is my log text", 999, null);
To fire an event, call Dts.Events.FireInformation(99, "test", "hit the help message", "", 0, true);
To use the connections collection use something like the following:
ConnectionManager cm = Dts.Connections.Add("OLEDB");
cm.ConnectionString = "Data Source=localhost;Initial Catalog=AdventureWorks;Provider=SQLNCLI10;Integrated Security=SSPI;Auto Translate=False;";
Before returning from this method, set the value of Dts.TaskResult to indicate success or failure.
To open Help, press F1.
*/
public void Main()
{
// TODO: Add your code here
String fp = Dts.Variables.Get("User::folderPath").Value.ToString() + Dts.Variables.Get("User::fileName").Value.ToString();
if (File.Exists(fp))
{
Dts.Variables.Get("User::fileExistFlag").Value = 1;
}
MessageBox.Show(fp);
MessageBox.Show(Dts.Variables.Get("User::fileExistFlag").Value.ToString());
Dts.TaskResult = (int)ScriptResults.Success;
}
}
public static Microsoft.SqlServer.Dts.Runtime.Variable Get(
this Microsoft.SqlServer.Dts.Runtime.Variables variables, string name)
{
foreach(Microsoft.SqlServer.Dts.Runtime.Variable item in variables)
{
if(item.Name == name) return item;
}
return null;
}
}

This is a known BUG in SQL Server BIDS 2005/2008 after installing side by side a later version of SSIS. For example if you are developing a SSIS 2008 package and then install SSIS 2012.
A workaround is to move the file "Microsoft.SQLServer.ManagedDTS.dll" located in the path:
"C:\Program Files (x86)\Microsoft SQL Server\110\SDK\Assemblies" to a backup folder, then the bids take the reference from the path "C:\Windows\assembly\GAC_MSIL\Microsoft.SqlServer.ManagedDTS\10.0.0.0__89845dcd8080cc91\"
But it doesn't seem to work for all the cases reported.
Source:
https://connect.microsoft.com/SQLServer/feedback/details/744390/ssis-any-pre-2012-error-cannot-apply-indexing-with-to-an-expression-of-type-microsoft-sqlserver-dts-runtime-variables
http://support.microsoft.com/kb/938608/en-us

Oddly, this indexer does seem to exist. If it isn't working, though, you might be able to use an extension method:
public static class MyExtensionMethods
{
public static Microsoft.SqlServer.Dts.Runtime.Variable Get(
this Microsoft.SqlServer.Dts.Runtime.Variables variables, string name)
{
foreach(Microsoft.SqlServer.Dts.Runtime.Variable item in variables)
{
if(item.Name == name) return item;
}
return null;
}
}
and use:
... Dts.Variables.Get("User::folderPath").Value ...
instead.

Use Browse in the add references window and look for this dll: C:\Program Files (x86)\Microsoft SQL Server\100\SDK\Assemblies\Microsoft.SQLServer.ManagedDTS.dll

Server unable to execute EWS autodiscover

On our testing server, EWS autodiscover does not work. To eliminate an ill-set IIS option from the list of causes, I C&P'ed together a WindowsForms Application (code below) and put it, together with the Microsoft.Exchange.Webservice.dll, into a folder on which I have write permission.
Unfortunately, neither xml nor text file are created. Instead, I get an Unhandled Exception error.
System.NullReferenceException
at System.Windows.Forms.TextBoxBase.AppendText(String text)
This does not happen on my development machine, which is in the same AD domain and on which the test app always returns that autodiscover was successful.
Question: How come no Trace output is generated?
So now, my app code:
Form1.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Microsoft.Exchange.WebServices;
using Microsoft.Exchange.WebServices.Data;
namespace ADDebugWin
{
public partial class Form1 : Form
{
public static string traceData;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
ExchangeService ews = new ExchangeService(ExchangeVersion.Exchange2010);
ews.TraceListener = new TraceListener();
// Optional flags to indicate the requests and responses to trace.
ews.TraceFlags = TraceFlags.EwsRequest | TraceFlags.EwsResponse;
ews.TraceEnabled = true;
ews.UseDefaultCredentials = true;
try {
ews.AutodiscoverUrl("email#mydomain.com");
textBox1.AppendText("AutoDiscover erfolgreich.");
} catch (Exception ex) {
textBox1.AppendText(traceData);
textBox1.AppendText(ex.Message + "\r\n" + ex.StackTrace);
}
}
}
}
TraceListener.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using ADDebugMvc.Controllers;
using Microsoft.Exchange.WebServices.Data;
using System.Xml;
namespace ADDebugMvc.Models
{
class TraceListener : ITraceListener
{
public void Trace(string traceType, string traceMessage)
{
CreateXMLTextFile(traceType, traceMessage.ToString());
HomeController.traceData += traceType + " " + traceMessage.ToString() + "\r\n";
}
private void CreateXMLTextFile(string fileName, string traceContent)
{
// Create a new XML file for the trace information.
try
{
// If the trace data is valid XML, create an XmlDocument object and save.
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(traceContent);
xmlDoc.Save(fileName + ".xml");
}
catch
{
// If the trace data is not valid XML, save it as a text document.
System.IO.File.WriteAllText(fileName + ".txt", traceContent);
}
}
}
}

One should note that
ews.TraceFlags = TraceFlags.EwsRequest | TraceFlags.EwsResponse;
is not returning any Traces during AutoDiscover.
(ews.TraceFlags = TraceFlags.All; does.)
So no string is appended to traceData, which is why traceData==null -> Exception when appending it to a TextBox.

SSIS Script task get all the variable names and values

I need to parse through all the user variables in my ssis packages. As of now, I am able to get the names and values of ALL the variables in my package. I need to grab the name and the value and dump them to a table. As of now, I can display the name and the value through a message box, but I cant seem to figure out, how on script task I would be able to dump these values to a table. Any help will be appreciated.
using System;
using System.Data;
using Microsoft.SqlServer.Dts.Runtime;
using System.Windows.Forms;
//using System;
////using Microsoft.SqlServer.Dts.Runtime;
namespace ST_81ec2398155247148a7dad513f3be99d.csproj
{
[System.AddIn.AddIn("ScriptMain", Version = "1.0", Publisher = "", Description = "")]
public partial class ScriptMain : Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase
{
#region VSTA generated code
enum ScriptResults
{
Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success,
Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure
};
#endregion
public void Main()
{
Microsoft.SqlServer.Dts.Runtime.Application app = new Microsoft.SqlServer.Dts.Runtime.Application();
// Load a sample package that contains a variable that sets the file name.
Package pkg = app.LoadPackage(
#"C:\PackagePath\" +
#"Template0719.dtsx",
null);
Variables pkgVars = pkg.Variables;
foreach (Variable pkgVar in pkgVars)
{
MessageBox.Show(pkgVar.Name);
MessageBox.Show(pkgVar.Value.ToString());
}
Console.Read();
}
}
}

Since you know how to get the list of variables, you could create a data source script component.