[DevExpress]GridControl 同步列头checkbox与列中checkbox状态

关键代码：

        /// <summary>

        /// 同步列头checkbox与列中checkbox状态

        /// </summary>

        /// <param name="view">GridView</param>

        /// <param name="fieldeName">需要绘制Checkbox的列名</param>

        /// <param name="e">MouseEventArgs</param>

        public static void SyncCheckStatus(this GridView view, string fieldeName, MouseEventArgs e)

        {

            /*说明：

             *在MouseDown事件中使用

             *参考：https://www.devexpress.com/Support/Center/Question/Details/Q354489

             *eg:

             *private void gvLampConfig_MouseDown(object sender, MouseEventArgs e)

             *{

             *GridView _view = sender as GridView;

             *_view.SyncCheckStatus(gcCheckFieldName, e);

             *}

             */

            if (e.Clicks == 1 && e.Button == MouseButtons.Left)

            {

                view.ClearSorting();

                view.PostEditor();

                GridHitInfo _info;

                Point _pt = view.GridControl.PointToClient(Control.MousePosition);

                _info = view.CalcHitInfo(_pt);

                if (_info.InColumn && _info.Column.FieldName.Equals(fieldeName))

                {

                    if (getCheckedCount(view, fieldeName) == view.DataRowCount)

                        UnChekAll(view, fieldeName);

                    else

                        CheckAll(view, fieldeName);

                }

            }

        }

        private static int getCheckedCount(GridView view, string filedName)

        {

            int count = 0;

            for (int i = 0; i < view.DataRowCount; i++)

            {

                object _cellValue = view.GetRowCellValue(i, view.Columns[filedName]);

                //if (_cellValue != null && !(_cellValue is DBNull))

                if (_cellValue == null) continue;

                if (string.IsNullOrEmpty(_cellValue.ToString().Trim())) continue;

                bool _checkStatus = false;

                if (bool.TryParse(_cellValue.ToString(), out _checkStatus))

                {

                    //if ((bool)_cellValue)

                    if (_checkStatus)

                        count++;

                }

            }

            return count;

        }

        private static void CheckAll(GridView view, string fieldName)

        {

            for (int i = 0; i < view.DataRowCount; i++)

            {

                view.SetRowCellValue(i, view.Columns[fieldName], true);

            }

        }

        private static void UnChekAll(GridView view, string fieldName)

        {

            for (int i = 0; i < view.DataRowCount; i++)

            {

                view.SetRowCellValue(i, view.Columns[fieldName], false);

            }

        }

代码使用：

        private void gvLampConfig_MouseDown(object sender, MouseEventArgs e)

        {

            GridView _view = sender as GridView;

            _view.SyncCheckStatus(gcCheckFieldName, e);

        }

代码效果：