class

 DataGridTimePickerColumn : DataGridColumnStyle 

    

{

        private DateTimePicker myDateTimePicker = new DateTimePicker();

        // The isEditing field tracks whether or not the user is

        // editing data with the hosted control.

        private bool isEditing;

        public DataGridTimePickerColumn() : base() 

        {

            myDateTimePicker.Visible = false;

        }

        protected override void Abort(int rowNum)

        {

            isEditing = false;

            myDateTimePicker.ValueChanged -= 

                new EventHandler(TimePickerValueChanged);

            Invalidate();

        }

        protected override bool Commit

            (CurrencyManager dataSource, int rowNum) 

        {

            myDateTimePicker.Bounds = Rectangle.Empty;

         

            myDateTimePicker.ValueChanged -= 

                new EventHandler(TimePickerValueChanged);

            if (!isEditing)

                return true;

            isEditing = false;

            try 

            {

                DateTime value = myDateTimePicker.Value;

                SetColumnValueAtRow(dataSource, rowNum, value);

            } 

            catch (Exception) 

            {

                Abort(rowNum);

                return false;

            }

            Invalidate();

            return true;

        }

        protected override void Edit(

            CurrencyManager source, 

            int rowNum,

            Rectangle bounds, 

            bool readOnly,

            string instantText, 

            bool cellIsVisible) 

        {

            DateTime value = (DateTime) 

                GetColumnValueAtRow(source, rowNum);

            if (cellIsVisible) 

            {

                myDateTimePicker.Bounds = new Rectangle

                    (bounds.X + 2, bounds.Y + 2, 

                    bounds.Width - 4, bounds.Height - 4);

                myDateTimePicker.Value = value;

                myDateTimePicker.Visible = true;

                myDateTimePicker.ValueChanged += 

                    new EventHandler(TimePickerValueChanged);

            } 

            else 

            {

                myDateTimePicker.Value = value;

                myDateTimePicker.Visible = false;

            }

            if (myDateTimePicker.Visible)

                DataGridTableStyle.DataGrid.Invalidate(bounds);

        }

        protected override Size GetPreferredSize(

            Graphics g, 

            object value) 

        {

            return new Size(100, myDateTimePicker.PreferredHeight + 4);

        }

        protected override int GetMinimumHeight() 

        {

            return myDateTimePicker.PreferredHeight + 4;

        }

        protected override int GetPreferredHeight(Graphics g, 

            object value) 

        {

            return myDateTimePicker.PreferredHeight + 4;

        }

        protected override void Paint(Graphics g, 

            Rectangle bounds, 

            CurrencyManager source, 

            int rowNum) 

        {

            Paint(g, bounds, source, rowNum, false);

        }

        protected override void Paint(

            Graphics g, 

            Rectangle bounds,

            CurrencyManager source, 

            int rowNum,

            bool alignToRight) 

        {

            Paint(

                g,bounds, 

                source, 

                rowNum, 

                Brushes.Red, 

                Brushes.Blue, 

                alignToRight);

        }

        protected override void Paint(

            Graphics g, 

            Rectangle bounds,

            CurrencyManager source, 

            int rowNum,

            Brush backBrush, 

            Brush foreBrush,

            bool alignToRight) 

        {

            DateTime date = (DateTime) 

                GetColumnValueAtRow(source, rowNum);

            Rectangle rect = bounds;

            g.FillRectangle(backBrush,rect);

            rect.Offset(0, 2);

            rect.Height -= 2;

            g.DrawString(date.ToString("d"), 

                this.DataGridTableStyle.DataGrid.Font, 

                foreBrush, rect);

        }

        protected override void SetDataGridInColumn(DataGrid value) 

        {

            base.SetDataGridInColumn(value);

            if (myDateTimePicker.Parent != null) 

            {

                myDateTimePicker.Parent.Controls.Remove 

                    (myDateTimePicker);

            }

            if (value != null) 

            {

                value.Controls.Add(myDateTimePicker);

            }

        }

        private void TimePickerValueChanged(object sender, EventArgs e) 

        {

            this.isEditing = true;

            base.ColumnStartedEditing(myDateTimePicker);

        }

    }