How to Run SSIS Package through SQL AGENT Job

Question

I am good with SSIS, I created a package which will load the excel files to SQL SERVER  tables. To Implement this I wrote the C# code to extract the first sheet name only, and then
package will load the data present the first sheet only. The package working fine when i run this through BIDS. But the same package throwing error at C# code step when i am running this package through SQL AGENT JOB. When i searched for this, i have seen
many posts saying that, this is happening becoz of using Microsoft.interop.excel references inside the c# code. Please help me with this. Is there any alternate way in c# to extract the first sheet name(not based on ascending order) of an excel file with out
using interop. Or
How to configure SQL AGENT job to run suceessfully when using interop inside the code.
My UAT server is of 64 bit. And i have to run this in the same server.
I tried creating  "Desktop" folder in "C:\Windows\System32\config\systemprofile\"
Error:Description: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object.     at ST_ecfa668f250a45e18c95639c9ffd64d4.csproj.ScriptMain.Main()
    --- End of inner exception stack trace ---     at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)    
at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)     at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr,
Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)     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 System.Type.InvokeMember(String name, BindingFlags
invokeAttr, Binder binder, Object target, Object[] args, CultureInfo culture)     at Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTATaskScriptingEngine.ExecuteScript()  End Error  Error: 2015-02-27 11:24:00.23     Code: 0x00000001
    Source: User Mail      Description: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Data.SqlClient.SqlException: A network-related or instance-specific error
occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could
not open a connection to SQL Server)     at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)     at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
    at System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject)
    at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject)     at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String
host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart)     at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString
connectionOptions, String newPassword, Boolean redirectedUserInstance)     at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword,
SqlConnection owningObject, Boolean redirectedUserInstance)     at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection)  
  at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options)     at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owning...
 The package execution fa...  The step failed
using System;
using System.Data;
using System.Diagnostics;
using Microsoft.SqlServer.Dts.Runtime;
using System.Windows.Forms;
using System.Data.OleDb;
using Microsoft.Office.Interop;
using System.Runtime.InteropServices;
namespace ST_ecfa668f250a45e18c95639c9ffd64d4.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()
{ /*Passing the file path via User::File_Name Variable*/
string FileName = Dts.Variables["User::File_Name"].Value.ToString();
Microsoft.Office.Interop.Excel.Application xlApp = null;
Microsoft.Office.Interop.Excel.Workbook excelBook = null;
try
xlApp = new Microsoft.Office.Interop.Excel.Application();
excelBook = xlApp.Workbooks.Open(FileName, Type.Missing,
Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing);
string[] excelSheets = new string[excelBook.Worksheets.Count];
int i = 0;
foreach (Microsoft.Office.Interop.Excel.Worksheet wSheet in excelBook.Worksheets)
excelSheets[i] = wSheet.Name;
i++;
Dts.Variables["User::WorkSheetName"].Value = excelSheets[0] + "$";
catch (Exception ex)
excelBook.Close(false, FileName, null);
Marshal.ReleaseComObject(excelBook);
string error = ex.Message;
finally
excelBook.Close(false, FileName, null);
Marshal.ReleaseComObject(excelBook);
Dts.TaskResult = (int)ScriptResults.Success;

Answer 1

I installed office in my machine...but this doesn't solved my problem...
Finally i figured out the solution for this and it is working now, Here is the solution...!
Create the folder with name "Desktop" inside the below mentioned path
C:\Windows\SysWOW64\config\systemprofile\   
But i really don't understand the logic behind this. Can someone explain it pls....