this.btnDownload.Enabled = false;

            this.Cursor = Cursors.WaitCursor;

            if (this.dataGridView1.SelectedRows.Count == 0)

            {

                this.Cursor = Cursors.Default;

                this.btnDownload.Enabled = true;

                MessageBox.Show("未选节目");

                return;

            }

            if(!System.IO.Directory.Exists(this.txDonwloadPath.Text))

            {

                this.Cursor = Cursors.Default;

                this.btnDownload.Enabled = true;

                MessageBox.Show("本地路径不存在");

                return;

            }

            foreach (DataGridViewRow dgvr in this.dataGridView1.SelectedRows)

            {

                try

                {

                    string fileOpenResult = this.querryObj.audioStreamCreate(this.tMaterial.Rows[dgvr.Index][3].ToString());//调用远程对象打开远程文件

                    if (fileOpenResult == "ok")

                    {

                        this.fileReceive(dgvr.Index);

                        querryObj.audioStreamClose();

                        this.saveFs.Close();

                    }

                    else

                    {

                        MessageBox.Show("未能打开远程文件：" + fileOpenResult);

                    }

                }

                catch (System.Runtime.Remoting.RemotingException ex)

                {

                    MessageBox.Show("打开远程文件失败：" + ex.Message);

                }

            }