Unzip a file to memorystream using SharpZipLib

private void button1_Click(object sender, EventArgs e)

        {

            string ExtractLocation = "";

            FolderBrowserDialog fbd = new FolderBrowserDialog();

            if (fbd.ShowDialog() == DialogResult.OK)

            {

                //Path to Extract

                ExtractLocation = fbd.SelectedPath;

                //Extract Zip File

                FastZip fz = new FastZip();

                fz.ExtractZip(@"D:\Test.zip",ExtractLocation, "");

                MessageBox.Show("Extraction Complete !!!");

            }

        }