c# error : the name 'dt' does not exist in current context

Question

using System;

using System.Data;

using Microsoft.SqlServer.Dts.Runtime;

using System.Windows.Forms;

using System.Data.SqlClient;

using System.IO;

namespace ST_37ea42e2bf564f4f9a848267124b45f1.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()

{ // TODO: Add your code here

String sDatabaseConnectionString = @"PUNITP347138D.Ankit";

// Here I trying to use Variable Instead of C:\HCS\Data\cd_catalog.xml for file location

String sXMLFile = @"C:\Users\ankit_rohatgi\Desktop\Output 5-25-2015 6-53-01 PM - Copy.xml";

try

{

using (SqlConnection oConn = new SqlConnection(sDatabaseConnectionString))

{ // Open the Connection to the database oConn.Open();

// Instanciate a new DataSet using (DataSet dsTemp = new DataSet())

{ //Read the XML file into the DataSet dsTemp.ReadXml(sXMLFile);

// Instante a datatable from the DataSet using (DataTable dt = dsTemp.Tables[0])

// Instanciate a new SqlBulkCopy object using the connection using (

SqlBulkCopy sb = new SqlBulkCopy(oConn);

{ // Assign BatchSize

sb.BatchSize = 50;

// Assign Destination Table Name

// Here I trying to use Variable Instead of C:cd_catalog for table

sb.DestinationTableName = "TableName";

sb.WriteToServer(dt); //error the name 'dt' does not exist in current context, please help

}

}

}

}

// Catch any SQL errors first

catch (SqlException ex)

{

}

Dts.TaskResult = (int)ScriptResults.Success;

}

}

}