Get a WSP solution file out of a SharePoint 2007 Farm

Build the following form with the the following code behind.

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.SharePoint.Administration;

namespace GET_WSP

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

            SPSolutionCollection solutions = SPFarm.Local.Solutions;

            foreach (SPSolution solution in solutions)

            {

                SPPersistedFile wspFile = solution.SolutionFile;

                SolutionCollectionListBox.Items.Add(solution.Name);

            }           

        }

        private void button1_Click(object sender, EventArgs e)

        {

            string FileLocation = FileLoc_textBox.Text;

            SPSolutionCollection solutions = SPFarm.Local.Solutions;

            System.Windows.Forms.ListBox.SelectedObjectCollection SelectedSolutions = SolutionCollectionListBox.SelectedItems;

            foreach (SPSolution solution in solutions)

            {

                if (SolutionCollectionListBox.SelectedItems.Contains(solution.Name)||GetAllWSPs.Checked)

                {

                    SPPersistedFile wspFile = solution.SolutionFile;

                    wspFile.SaveAs(FileLocation + solution.Name);

                }

            }

        }

    }

}