DataGridVIew的使用学习
1.自定义单元格Cell类型：以定义一个DataGridViewDateTimePickerColumn为例（源码来自CodeProject）。
自定义DataGridViewDateTimePickerColumn
自定义DataGridViewDateTimePickerColumn
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Windows.Forms;
6
7 namespace NtControls
8 {
9 public class DataGridViewDateTimePickerColumn:DataGridViewColumn
10 {
11 public DataGridViewDateTimePickerColumn()
12 : base(new CalendarCell())
13 {
14 }
15
16 public override DataGridViewCell CellTemplate
17 {
18 get
19 {
20 return base.CellTemplate;
21 }
22 set
23 {
24 if (value != null &&
25 !value.GetType().IsAssignableFrom(typeof(CalendarCell)))
26 {
27 throw new InvalidCastException("Must be a CalendarCell");
28 }
29 base.CellTemplate = value;
30 }
31 }
32 }
33 public class CalendarCell : DataGridViewTextBoxCell
34 {
35
36 public CalendarCell()
37 : base()
38 {
39 // Use the short date format.
40 this.Style.Format = "d";
41 }
42
43 public override void InitializeEditingControl(int rowIndex, object
44 initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle)
45 {
46 // Set the value of the editing control to the current cell value.
47 base.InitializeEditingControl(rowIndex, initialFormattedValue,
48 dataGridViewCellStyle);
49 CalendarEditingControl ctl =
50 DataGridView.EditingControl as CalendarEditingControl;
51
52 if (this.Value != System.DBNull.Value)
53 {
54 ctl.Value = (DateTime)this.Value;
55 }
56
57 }
58
59 public override Type EditType
60 {
61 get
62 {
63 // Return the type of the editing contol that CalendarCell uses.
64 return typeof(CalendarEditingControl);
65 }
66 }
67
68 public override Type ValueType
69 {
70 get
71 {
72 // Return the type of the value that CalendarCell contains.
73 return typeof(DateTime);
74 }
75 }
76
77 public override object DefaultNewRowValue
78 {
79 get
80 {
81 // Use the current date and time as the default value.
82 return DateTime.Now;
83 }
84 }
85 }
86
87 class CalendarEditingControl : DateTimePicker, IDataGridViewEditingControl
88 {
89 DataGridView dataGridView;
90 private bool valueChanged = false;
91 int rowIndex;
92
93 public CalendarEditingControl()
94 {
95 this.Format = DateTimePickerFormat.Short;
96 }
97
98 // Implements the IDataGridViewEditingControl.EditingControlFormattedValue
99 // property.
100 public object EditingControlFormattedValue
101 {
102 get
103 {
104 return this.Value.ToShortDateString();
105 }
106 set
107 {
108 if (value is String)
109 {
110 this.Value = DateTime.Parse((String)value);
111 }
112 }
113 }
114
115 // Implements the
116 // IDataGridViewEditingControl.GetEditingControlFormattedValue method.
117 public object GetEditingControlFormattedValue(
118 DataGridViewDataErrorContexts context)
119 {
120 return EditingControlFormattedValue;
121 }
122
123 // Implements the
124 // IDataGridViewEditingControl.ApplyCellStyleToEditingControl method.
125 public void ApplyCellStyleToEditingControl(
126 DataGridViewCellStyle dataGridViewCellStyle)
127 {
128 this.Font = dataGridViewCellStyle.Font;
129 this.CalendarForeColor = dataGridViewCellStyle.ForeColor;
130 this.CalendarMonthBackground = dataGridViewCellStyle.BackColor;
131 }
132
133 // Implements the IDataGridViewEditingControl.EditingControlRowIndex
134 // property.
135 public int EditingControlRowIndex
136 {
137 get
138 {
139 return rowIndex;
140 }
141 set
142 {
143 rowIndex = value;
144 }
145 }
146
147 // Implements the IDataGridViewEditingControl.EditingControlWantsInputKey
148 // method.
149 public bool EditingControlWantsInputKey(
150 Keys key, bool dataGridViewWantsInputKey)
151 {
152 // Let the DateTimePicker handle the keys listed.
153 switch (key & Keys.KeyCode)
154 {
155 case Keys.Left:
156 case Keys.Up:
157 case Keys.Down:
158 case Keys.Right:
159 case Keys.Home:
160 case Keys.End:
161 case Keys.PageDown:
162 case Keys.PageUp:
163 return true;
164 default:
165 return false;
166 }
167 }
168
169 // Implements the IDataGridViewEditingControl.PrepareEditingControlForEdit
170 // method.
171 public void PrepareEditingControlForEdit(bool selectAll)
172 {
173 // No preparation needs to be done.
174 }
175
176 // Implements the IDataGridViewEditingControl
177 // .RepositionEditingControlOnValueChange property.
178 public bool RepositionEditingControlOnValueChange
179 {
180 get
181 {
182 return false;
183 }
184 }
185
186 // Implements the IDataGridViewEditingControl
187 // .EditingControlDataGridView property.
188 public DataGridView EditingControlDataGridView
189 {
190 get
191 {
192 return dataGridView;
193 }
194 set
195 {
196 dataGridView = value;
197 }
198 }
199
200 // Implements the IDataGridViewEditingControl
201 // .EditingControlValueChanged property.
202 public bool EditingControlValueChanged
203 {
204 get
205 {
206 return valueChanged;
207 }
208 set
209 {
210 valueChanged = value;
211 }
212 }
213
214 // Implements the IDataGridViewEditingControl
215 // .EditingPanelCursor property.
216 public Cursor EditingPanelCursor
217 {
218 get
219 {
220 return base.Cursor;
221 }
222 }
223
224 protected override void OnValueChanged(EventArgs eventargs)
225 {
226 // Notify the DataGridView that the contents of the cell
227 // have changed.
228 valueChanged = true;
229 this.EditingControlDataGridView.NotifyCurrentCellDirty(true);
230 base.OnValueChanged(eventargs);
231 }
232 }
233 }
调用的代码：
1 DataGridViewDateTimePickerColumn ColdatePicker = new DataGridViewDateTimePickerColumn(); 2 ColdatePicker.DataPropertyName = "gg";//绑定一个时间类型的数据字段 3 ColdatePicker.HeaderText = "时间"; 4 ColdatePicker.Name = "ColdatePicker";
2.手工创建Column后绑定数据（不做介绍）
3.让DataGridView奇数行和偶数行以不同的颜色显示
1 DataGridViewCellStyle dataGridViewCellStyle1 =new DataGridViewCellStyle(); 2 dataGridViewCellStyle1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(192)))), ((int)(((byte)(255)))), ((int)(((byte)(255))))); 3 dataGridViewCellStyle1.ForeColor = System.Drawing.SystemColors.WindowText; 4 this.dataGridView1.AlternatingRowsDefaultCellStyle = dataGridViewCellStyle1;
4.选择RowHeader，右击弹出菜单
1 private void dgvRegionStatistic_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
2 {
3 if (e.Button==MouseButtons.Left)
4 {
5 //dgvRegionStatistic.s(e.RowIndex);
6 }
7 else if (e.Button==MouseButtons.Right)
8 {
9 dgvRegionStatistic.Rows[e.RowIndex].Selected = true;
10 ContextMenuStrip munu = contextMenuStrip1;
11 munu.Show(MousePosition.X, MousePosition.Y);
12 }
13 }
5.Drill表中字段StraId（int）依赖于Stra表中主键ID（int），查询Drill表显示地层信息为Stra表中的Stra_name字段。
View Code
1 private DataTable GetTable(string sql)
2 {
3 string strConn = global::NcControls.Properties.Settings.Default.geoConnString;
4 using (OleDbConnection sqlconn = new OleDbConnection(strConn))
5 {
6 DataTable dt = new DataTable();
7 OleDbDataAdapter sqlda = new OleDbDataAdapter(sql, sqlconn);
8 sqlda.Fill(dt);
9 return dt;
10 }
11 }
12
13 private void frmDrill_Load(object sender, EventArgs e)
14 {
15 dataGridView1.AutoGenerateColumns = false;
16 dataGridView1.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.EnableResizing;
17 dataGridView1.ColumnHeadersHeight = 48;
18 dataGridView1.EditMode = DataGridViewEditMode.EditOnEnter;//鼠标点击一次就可以修改
19 dataGridView1.AllowUserToAddRows = false;
20 // dataGridView1.ReadOnly = true;
21
22 System.Windows.Forms.DataGridViewTextBoxColumn Column1 = new DataGridViewTextBoxColumn();
23 Column1.DataPropertyName = "ID";
24 Column1.HeaderText = "编号";
25 Column1.Name = "Column1";
26
27 System.Windows.Forms.DataGridViewTextBoxColumn ColLayerId = new DataGridViewTextBoxColumn();
28 ColLayerId.DataPropertyName = "Layer_id";
29 ColLayerId.HeaderText = "分层号";
30 ColLayerId.Name = "ColLayerId";
31
32 System.Windows.Forms.DataGridViewTextBoxColumn ColHoleId = new DataGridViewTextBoxColumn();
33 ColHoleId.DataPropertyName = "HoleId";
34 ColHoleId.HeaderText = "钻孔号";
35 ColHoleId.Name = "ColHoleId";
36
37 System.Windows.Forms.DataGridViewComboBoxColumn Column2 = new DataGridViewComboBoxColumn();
38 Column2.DisplayStyle = System.Windows.Forms.DataGridViewComboBoxDisplayStyle.Nothing;//和txtbox一样显示
39 Column2.Width = 160;
40 string sql1 = "select * from Stra;";
41 Column2.DataPropertyName = "StraId";
42 Column2.DataSource = GetTable(sql1);
43 Column2.DisplayMember = "Stra_name";
44 Column2.ValueMember = "ID";
45
46 DataGridViewActionButtonColumn colAction = new DataGridViewActionButtonColumn();
47 colAction.Name = "colAction";
48 colAction.Width = 160;
49
50 this.dataGridView1.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
51 Column1,ColLayerId,ColHoleId,Column2,colAction});
52
53 string sql2 = "select * from Drill";
54 this.dataGridView1.DataSource = GetTable(sql2);//在为ComboxCell添加完绑定后给DataGridView添加数据源
55
56 }
参考文献
http://www.cnblogs.com/peterzb/archive/2009/05/29/1491891.html
http://msdn.microsoft.com/zh-cn/library/ms404353.aspx
http://msdn.microsoft.com/zh-cn/library/system.windows.forms.datagridview.autogeneratecolumns.aspx