DataGridView控件内建立日期选择编辑列

两个文件：

CalendarColumn 类：

1. public class CalendarColumn : DataGridViewColumn
2. {
3. public CalendarColumn()
4. : base(new CalendarCell())
5. {
6. }
7. public override DataGridViewCell CellTemplate
8. {
9. get
10. {
11. return base.CellTemplate;
12. }
13. set
14. {
15. // Ensure that the cell used for the template is a CalendarCell.
16. if (value != null &&
17. !value.GetType().IsAssignableFrom(typeof(CalendarCell)))
18. {
19. throw new InvalidCastException("Must be a CalendarCell");
20. }
21. base.CellTemplate = value;
22. }
23. }
24. }

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

CalendarCell 类：

1. public class CalendarCell : DataGridViewTextBoxCell
2. {
3. public CalendarCell()
4. : base()
5. {
6. // Use the short date format.
7. this.Style.Format = "d";
8. }
9. public override void InitializeEditingControl(int rowIndex, object
10. initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle)
11. {
12. // Set the value of the editing control to the current cell value.
13. base.InitializeEditingControl(rowIndex, initialFormattedValue,
14. dataGridViewCellStyle);
15. CalendarEditingControl ctl =
16. DataGridView.EditingControl as CalendarEditingControl;
17. if (this.Value == null)
18. ctl.Value = DateTime.Now;
19. else
20. ctl.Value = (DateTime)this.Value;
21. }
22. public override Type EditType
23. {
24. get
25. {
26. // Return the type of the editing contol that CalendarCell uses.
27. return typeof(CalendarEditingControl);
28. }
29. }
30. public override Type ValueType
31. {
32. get
33. {
34. // Return the type of the value that CalendarCell contains.
35. return typeof(DateTime);
36. }
37. }
38. public override object DefaultNewRowValue
39. {
40. get
41. {
42. // Use the current date and time as the default value.
43. return DateTime.Now;
44. }
45. }
46. }
47. class CalendarEditingControl : DateTimePicker, IDataGridViewEditingControl
48. {
49. DataGridView dataGridView;
50. private bool valueChanged = false;
51. int rowIndex;
52. public CalendarEditingControl()
53. {
54. this.Format = DateTimePickerFormat.Short;
55. }
56. // Implements the IDataGridViewEditingControl.EditingControlFormattedValue
57. // property.
58. public object EditingControlFormattedValue
59. {
60. get
61. {
62. return this.Value.ToShortDateString();
63. }
64. set
65. {
66. String newValue = value as String;
67. if (newValue != null)
68. {
69. this.Value = DateTime.Parse(newValue);
70. }
71. }
72. }
73. // Implements the
74. // IDataGridViewEditingControl.GetEditingControlFormattedValue method.
75. public object GetEditingControlFormattedValue(
76. DataGridViewDataErrorContexts context)
77. {
78. return EditingControlFormattedValue;
79. }
80. // Implements the
81. // IDataGridViewEditingControl.ApplyCellStyleToEditingControl method.
82. public void ApplyCellStyleToEditingControl(
83. DataGridViewCellStyle dataGridViewCellStyle)
84. {
85. this.Font = dataGridViewCellStyle.Font;
86. this.CalendarForeColor = dataGridViewCellStyle.ForeColor;
87. this.CalendarMonthBackground = dataGridViewCellStyle.BackColor;
88. }
89. // Implements the IDataGridViewEditingControl.EditingControlRowIndex
90. // property.
91. public int EditingControlRowIndex
92. {
93. get
94. {
95. return rowIndex;
96. }
97. set
98. {
99. rowIndex = value;
100. }
101. }
102. // Implements the IDataGridViewEditingControl.EditingControlWantsInputKey
103. // method.
104. public bool EditingControlWantsInputKey(
105. Keys key, bool dataGridViewWantsInputKey)
106. {
107. // Let the DateTimePicker handle the keys listed.
108. switch (key & Keys.KeyCode)
109. {
110. case Keys.Left:
111. case Keys.Up:
112. case Keys.Down:
113. case Keys.Right:
114. case Keys.Home:
115. case Keys.End:
116. case Keys.PageDown:
117. case Keys.PageUp:
118. return true;
119. default:
120. return false;
121. }
122. }
123. // Implements the IDataGridViewEditingControl.PrepareEditingControlForEdit
124. // method.
125. public void PrepareEditingControlForEdit(bool selectAll)
126. {
127. // No preparation needs to be done.
128. }
129. // Implements the IDataGridViewEditingControl
130. // .RepositionEditingControlOnValueChange property.
131. public bool RepositionEditingControlOnValueChange
132. {
133. get
134. {
135. return false;
136. }
137. }
138. // Implements the IDataGridViewEditingControl
139. // .EditingControlDataGridView property.
140. public DataGridView EditingControlDataGridView
141. {
142. get
143. {
144. return dataGridView;
145. }
146. set
147. {
148. dataGridView = value;
149. }
150. }
151. // Implements the IDataGridViewEditingControl
152. // .EditingControlValueChanged property.
153. public bool EditingControlValueChanged
154. {
155. get
156. {
157. return valueChanged;
158. }
159. set
160. {
161. valueChanged = value;
162. }
163. }
164. // Implements the IDataGridViewEditingControl
165. // .EditingPanelCursor property.
166. public Cursor EditingPanelCursor
167. {
168. get
169. {
170. return base.Cursor;
171. }
172. }
173. protected override void OnValueChanged(EventArgs eventargs)
174. {
175. // Notify the DataGridView that the contents of the cell
176. // have changed.
177. valueChanged = true;
178. this.EditingControlDataGridView.NotifyCurrentCellDirty(true);
179. base.OnValueChanged(eventargs);
180. }
181. }

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

调用，和DataGridViewTextBoxColumn一样

private CalendarColumn awardsDate;

this.awardsDate = new CalendarColumn();

this.awardsDate.DataPropertyName = "awardsDate";
    this.awardsDate.HeaderText = "颁奖日期";
    this.awardsDate.Name = "awardsDate";

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

可以新增、赋值、编辑该列。