兩個文件：

?

CalendarColumn 類：

public?class?CalendarColumn?:?DataGridViewColumn??

????{??

????????public?CalendarColumn()??

????????????:?base(new?CalendarCell())??

????????{??

????????}??

??

????????public?override?DataGridViewCell?CellTemplate??

????????{??

????????????get??

????????????{??

????????????????return?base.CellTemplate;??

????????????}??

????????????set??

????????????{??

????????????????//?Ensure?that?the?cell?used?for?the?template?is?a?CalendarCell.??

????????????????if?(value?!=?null?&&??

????????????????????!value.GetType().IsAssignableFrom(typeof(CalendarCell)))??

????????????????{??

????????????????????throw?new?InvalidCastException("Must?be?a?CalendarCell");??

????????????????}??

????????????????base.CellTemplate?=?value;??

????????????}??

????????}??

????} ?

**********************************************************************

CalendarCell 類：

public?class?CalendarCell?:?DataGridViewTextBoxCell??

????{??

??

????????public?CalendarCell()??

????????????:?base()??

????????{??

????????????//?Use?the?short?date?format.??

????????????this.Style.Format?=?"d";??

????????}??

??

????????public?override?void?InitializeEditingControl(int?rowIndex,?object??

????????????initialFormattedValue,?DataGridViewCellStyle?dataGridViewCellStyle)??

????????{??

????????????//?Set?the?value?of?the?editing?control?to?the?current?cell?value.??

????????????base.InitializeEditingControl(rowIndex,?initialFormattedValue,??

????????????????dataGridViewCellStyle);??

????????????CalendarEditingControl?ctl?=??

????????????????DataGridView.EditingControl?as?CalendarEditingControl;??

????????????if?(this.Value?==?null)??

????????????????ctl.Value?=?DateTime.Now;??

????????????else??

????????????????ctl.Value?=?(DateTime)this.Value;??

????????}??

??

????????public?override?Type?EditType??

????????{??

????????????get??

????????????{??

????????????????//?Return?the?type?of?the?editing?contol?that?CalendarCell?uses.??

????????????????return?typeof(CalendarEditingControl);??

????????????}??

????????}??

??

????????public?override?Type?ValueType??

????????{??

????????????get??

????????????{??

????????????????//?Return?the?type?of?the?value?that?CalendarCell?contains.??

????????????????return?typeof(DateTime);??

????????????}??

????????}??

??

????????public?override?object?DefaultNewRowValue??

????????{??

????????????get??

????????????{??

????????????????//?Use?the?current?date?and?time?as?the?default?value.??

????????????????return?DateTime.Now;??

????????????}??

????????}??

????}??

??

????class?CalendarEditingControl?:?DateTimePicker,?IDataGridViewEditingControl??

????{??

????????DataGridView?dataGridView;??

????????private?bool?valueChanged?=?false;??

????????int?rowIndex;??

??

????????public?CalendarEditingControl()??

????????{??

????????????this.Format?=?DateTimePickerFormat.Short;??

????????}??

??

????????//?Implements?the?IDataGridViewEditingControl.EditingControlFormattedValue???

????????//?property.??

????????public?object?EditingControlFormattedValue??

????????{??

????????????get??

????????????{??

????????????????return?this.Value.ToShortDateString();??

????????????}??

????????????set??

????????????{??

????????????????String?newValue?=?value?as?String;??

????????????????if?(newValue?!=?null)??

????????????????{??

????????????????????this.Value?=?DateTime.Parse(newValue);??

????????????????}??

????????????}??

????????}??

??

????????//?Implements?the???

????????//?IDataGridViewEditingControl.GetEditingControlFormattedValue?method.??

????????public?object?GetEditingControlFormattedValue(??

????????????DataGridViewDataErrorContexts?context)??

????????{??

????????????return?EditingControlFormattedValue;??

????????}??

??

????????//?Implements?the???

????????//?IDataGridViewEditingControl.ApplyCellStyleToEditingControl?method.??

????????public?void?ApplyCellStyleToEditingControl(??

????????????DataGridViewCellStyle?dataGridViewCellStyle)??

????????{??

????????????this.Font?=?dataGridViewCellStyle.Font;??

????????????this.CalendarForeColor?=?dataGridViewCellStyle.ForeColor;??

????????????this.CalendarMonthBackground?=?dataGridViewCellStyle.BackColor;??

????????}??

??

????????//?Implements?the?IDataGridViewEditingControl.EditingControlRowIndex???

????????//?property.??

????????public?int?EditingControlRowIndex??

????????{??

????????????get??

????????????{??

????????????????return?rowIndex;??

????????????}??

????????????set??

????????????{??

????????????????rowIndex?=?value;??

????????????}??

????????}??

??

????????//?Implements?the?IDataGridViewEditingControl.EditingControlWantsInputKey???

????????//?method.??

????????public?bool?EditingControlWantsInputKey(??

????????????Keys?key,?bool?dataGridViewWantsInputKey)??

????????{??

????????????//?Let?the?DateTimePicker?handle?the?keys?listed.??

????????????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;??

????????????}??

????????}??

??

????????//?Implements?the?IDataGridViewEditingControl.PrepareEditingControlForEdit???

????????//?method.??

????????public?void?PrepareEditingControlForEdit(bool?selectAll)??

????????{??

????????????//?No?preparation?needs?to?be?done.??

????????}??

??

????????//?Implements?the?IDataGridViewEditingControl??

????????//?.RepositionEditingControlOnValueChange?property.??

????????public?bool?RepositionEditingControlOnValueChange??

????????{??

????????????get??

????????????{??

????????????????return?false;??

????????????}??

????????}??

??

????????//?Implements?the?IDataGridViewEditingControl??

????????//?.EditingControlDataGridView?property.??

????????public?DataGridView?EditingControlDataGridView??

????????{??

????????????get??

????????????{??

????????????????return?dataGridView;??

????????????}??

????????????set??

????????????{??

????????????????dataGridView?=?value;??

????????????}??

????????}??

??

????????//?Implements?the?IDataGridViewEditingControl??

????????//?.EditingControlValueChanged?property.??

????????public?bool?EditingControlValueChanged??

????????{??

????????????get??

????????????{??

????????????????return?valueChanged;??

????????????}??

????????????set??

????????????{??

????????????????valueChanged?=?value;??

????????????}??

????????}??

??

????????//?Implements?the?IDataGridViewEditingControl??

????????//?.EditingPanelCursor?property.??

????????public?Cursor?EditingPanelCursor??

????????{??

????????????get??

????????????{??

????????????????return?base.Cursor;??

????????????}??

????????}??

??

????????protected?override?void?OnValueChanged(EventArgs?eventargs)??

????????{??

????????????//?Notify?the?DataGridView?that?the?contents?of?the?cell??

????????????//?have?changed.??

????????????valueChanged?=?true;??

????????????this.EditingControlDataGridView.NotifyCurrentCellDirty(true);??

????????????base.OnValueChanged(eventargs);??

????????}??

????} ?

*****************************************************************

調用，和DataGridViewTextBoxColumn一樣

??? private CalendarColumn awardsDate;

??? this.awardsDate = new CalendarColumn();

??? this.awardsDate.DataPropertyName = "awardsDate";
??? this.awardsDate.HeaderText = "頒獎日期";
??? this.awardsDate.Name = "awardsDate";

??? this.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
??????????? this.awardsDate});

?

可以新增、賦值、編輯該列。

?

轉載于:https://www.cnblogs.com/wanzhongjun/p/6250073.html

總結

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