winform 的一些记录

System.Media.SoundPlayer player = new System.Media.SoundPlayer();
player.SoundLocation = Application.StartupPath + "//请到此处报道.wav";
player.LoadAsync(); //异步读取
//player.PlaySync();//异步播放

//player.Load();
player.PlayLooping();//循环播放

private void dataGridView1_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
        {
            var cell = this.dataGridView1.Rows[e.RowIndex].Cells[1];
            DataGridViewComboBoxCell DgvCell = this.dataGridView1.Rows[e.RowIndex].Cells[1] as DataGridViewComboBoxCell;
            DgvCell.DataSource = comboboxOption;
            DgvCell.ValueMember = "pointType";
            DgvCell.DisplayMember = "Description";
        }

/// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            DataGridView dgv = sender as DataGridView;

            if (dgv.CurrentCell.GetType().Name == "DataGridViewComboBoxCell" && dgv.CurrentCell.RowIndex != -1) {
                //加上下拉事件
                (e.Control as ComboBox).SelectedIndexChanged += PointType_SelectedIndexChanged;
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PointType_SelectedIndexChanged(object sender, EventArgs e)
        {
            ComboBox combox = sender as ComboBox;

            combox.Leave += Combox_Leave;
            try {
                if (combox.SelectedItem != null && dataGridView.SelectedRows.Count > 0) {
                    var row = dataGridView1.CurrentRow;
                    Flyline fl = Client.getSide().Flylines.FirstOrDefault(x => x.guid == dataGridView.SelectedRows[0].Cells["ID"].Value.ToString());
                    if (fl != null)
                    {
                        LinePoint lp = fl.LinePoints.FirstOrDefault(x => x.ID == row.Cells["ID1"].Value.ToString());
                        if (lp != null)
                        {
                            var pointType = combox.SelectedValue;
                            if (pointType != null && !string.IsNullOrWhiteSpace(pointType.ToString()))
                            {
                                lp.pointType = pointType.ToString();
                            }
                        }
                    }
                }
                Thread.Sleep(100);
            }
            catch (Exception ex) {
                MessageBox.Show(ex.Message);
            }
        }
        /// <summary>
        /// 离开combox的时候，把事件删除
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Combox_Leave(object sender, EventArgs e)
        {
            ComboBox combox = sender as ComboBox;
            //做完处理，撤销动态事件
            combox.SelectedIndexChanged -= PointType_SelectedIndexChanged;
        }

 var data = Client.FirstOrDefault(x => x.guid == dataGridView.SelectedRows[0].Cells["ID"].Value.ToString()).LinePoints;
                            dataGridView1.DataSource = data;
                            for (var i = 0; i < data.Count; i++)
                            {
                                ((DataGridViewComboBoxCell)dataGridView1.Rows[i].Cells[1]).DataSource = comboboxOption;
                                ((DataGridViewComboBoxCell)dataGridView1.Rows[i].Cells[1]).ValueMember = "pointType";
                                ((DataGridViewComboBoxCell)dataGridView1.Rows[i].Cells[1]).DisplayMember = "Description";
                                ((DataGridViewComboBoxCell)dataGridView1.Rows[i].Cells[1]).Value = data[i].pointType;
                            }