如何在Datagridview裏面加Calendar控件

datagridviewl裏面可以添加的列有6種，沒有日期型的，於是我查找了些資料，找到個添加日期控件的方法。首先建立三個類：CalendarEditingControl，CalendarColumn，CalendarCell繼承已有的類，具體代碼如下：

class CalendarEditingControl : DateTimePicker,IDataGridViewEditingControl
    {
        DataGridView dataGridView;
        private bool valueChanged = false;
        int rowIndex;

        public CalendarEditingControl()
        {
            this.Format = DateTimePickerFormat.Short;
        }

        public object EditingControlFormattedValue
        {
            get
            {
                return this.Value.ToShortDateString();
            }
            set
            {
                if (value is String)
                {
                    this.Value = DateTime.Parse((String)value);
                }
            }
        }

        public object GetEditingControlFormattedValue(DataGridViewDataErrorContexts context)
        {
            return EditingControlFormattedValue;
        }

        public void ApplyCellStyleToEditingControl( DataGridViewCellStyle dataGridViewCellStyle)
        {
            this.Font = dataGridViewCellStyle.Font;
            this.CalendarForeColor = dataGridViewCellStyle.ForeColor;
            this.CalendarMonthBackground = dataGridViewCellStyle.BackColor;
        }

        public int EditingControlRowIndex
        {
            get
            {
                return rowIndex;
            }
            set
            {
                rowIndex = value;
            }
        }

        public bool EditingControlWantsInputKey(Keys key, bool dataGridViewWantsInputKey)
        {
            switch (key & Keys.KeyCode)
            {
                case Keys.Left:
                case Keys.Up:
                case Keys.Down:
                case Keys.Right:
                case Keys.Home:
                case Keys.End:
                case Keys.PageDown:
                case Keys.PageUp:
                return true;
                default:
                return false;
            }
        }

        public void PrepareEditingControlForEdit(bool selectAll)
        {
            // No preparation needs to be done.
        }

        public bool RepositionEditingControlOnValueChange
        {
            get
            {
                return false;
            }
        }

        public DataGridView EditingControlDataGridView
        {
            get
            {
                return dataGridView;
            }
            set
            {
                dataGridView = value;
            }
        }

        public bool EditingControlValueChanged
        {
            get
            {
                return valueChanged;
            }
            set
            {
                valueChanged = value;
            }
        }

        public Cursor EditingPanelCursor
        {
            get
            {
                return base.Cursor;
            }
        }

        protected override void OnValueChanged(EventArgs eventargs)
        {
            valueChanged = true;
            this.EditingControlDataGridView.NotifyCurrentCellDirty(true);
            base.OnValueChanged(eventargs);
        }

    }

 

第二個類：

 public class CalendarColumn : DataGridViewColumn
    {
        public CalendarColumn() : base(new CalendarCell())
        {
        }

        public override DataGridViewCell CellTemplate
        {
            get
            {
                return base.CellTemplate;
            }
            set
            {
                if (value != null && !value.GetType().IsAssignableFrom(typeof(CalendarCell)))
                {
                    throw new InvalidCastException("Must be a CalendarCell");
                }
                base.CellTemplate = value;
            }
        }

    }

 

 

 

第三個類：

public class CalendarCell : DataGridViewTextBoxCell
    {
        public CalendarCell() : base()
        {
             this.Style.Format = "d";
        }

        public override void InitializeEditingControl(int rowIndex, object initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle)
        {
             base.InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle);
            CalendarEditingControl ctl = DataGridView.EditingControl as CalendarEditingControl;
            ctl.Value = (DateTime)this.Value;
        }

        public override Type EditType
        {
            get
            {
                    return typeof(CalendarEditingControl);
            }
        }

        public override Type ValueType
        {
            get
            {
                      return typeof(DateTime);
            }
        }

        public override object DefaultNewRowValue
        {
            get
            {
                       return DateTime.Now;
            }
        }

    }

建立後就可以用 CalendarColumn直接聲明日期列的對象了，進而可以添加到datagridview裏面。