using System.Windows.Forms;

 OpenFileDialog openFileDialog = new OpenFileDialog();

            openFileDialog.Title = "选择文件";

            openFileDialog.Filter = "zip文件|*.zip|rar文件|*.rar|所有文件|*.*";

            openFileDialog.FileName = string.Empty;

            openFileDialog.FilterIndex = ;

            openFileDialog.RestoreDirectory = true;

            openFileDialog.DefaultExt = "zip";

            DialogResult result = openFileDialog.ShowDialog();

            if (result == System.Windows.Forms.DialogResult.Cancel)

            {

                return;

            }

            string fileName = openFileDialog.FileName;

            this.textBox1.Text = fileName;

 FolderBrowserDialog m_Dialog = new FolderBrowserDialog();

            DialogResult result = m_Dialog.ShowDialog();

            if (result == System.Windows.Forms.DialogResult.Cancel)

            {

                return;

            }

            string m_Dir = m_Dialog.SelectedPath.Trim();

            this.textBox1.Text = m_Dir;