ssis packages execution fails while executing it by c#

Hi,

I have created one ssis package on server. Now i want to execute this package using c# code.

I have implemented following code to perform this task:

 string pkgLocation = @"Package.dtsx";
        Package pkg;
        Application app;
        DTSExecResult pkgResults;
        Variables vars;
        app = new Application();


        pkg = app.LoadPackage(Server.MapPath(pkgLocation), null);

        vars = pkg.Variables;
       // vars["MonthInt"].Value = "02";
      //  vars["YearInt"].Value = "2014";




        pkgResults = pkg.Execute();

        foreach (DtsError pkgerror in pkg.Errors)
        {
            string err = "Error Source: " + pkg.Name + ": " + " Description: " + pkg.Description;
            //lblErrorMsg.Visible = true;
          //  lblErrorMsg.Text = err;
        }

        if (pkgResults == DTSExecResult.Success)
        {
            // lblErrorMsg.Visible = true;
            // lblErrorMsg.Text = "Package ran successfully in " + count;
        }
        else
        {
        } 

But all the time it gets fail.

Its giving me following error in DTSError:

'To run a SSIS package outside of Business Intelligence Development Studio you must install Standard Edition of Integration Services or higher.'

Can you please guide me how can i resolve this issue.

Is it necessary to install SSIS standard edition on all client machine.

PLease help.

Thanks in advance!

Regards

Rajni