可编辑的ListView控件
| ListView控件是一个在Windows应用程序中使用频率比较高的一个，通常使用它来显示数据报表。很多情况下，我们不仅仅使用ListView来显示数据，还要求编辑其中的数据。但是.NET提供的ListView控件的编辑功能十分有限，只能编辑首列，编辑格式只能为文本框，等等，使用起来甚为不便。因此本人新写了一个类，扩充了其功能，客户程序员可以设置任何列的格式(只读，编辑状态下文本框，编辑状态下组合框)，界面如图： |
 |
 |
| 源代码在此下载：/Files/hcfalan/EditableListView.rar |
| 摘录部分源代码如下： |
|
1
/**/
/// <summary> 2  /// 列描述 3  /// </summary>
4 
public
class
ALAN_ColumnHeader : ColumnHeader 5
{ 6 private ALAN_ListViewColumnStyle cs; //本列的风格 7 8 public ALAN_ColumnHeader() : base() 9   { 10 cs = ALAN_ListViewColumnStyle.ReadOnly; 11  } 12 13 public ALAN_ColumnHeader(ALAN_ListViewColumnStyle _cs) 14 { 15 cs = _cs; 16 } 17 18 public ALAN_ListViewColumnStyle ColumnStyle 19 { 20 get { return cs; } 21 set { cs = value;} 22 } 23 }
; 24 25
/**/
/// <summary> 26 /// 可编辑的ListView控件 27 /// </summary>
28
public
class
ALAN_EditListView : ListView 29
{ 30 31 private ListViewItem m_currentLVItem; 32 33 private int m_nX=0; 34 35 private int m_nY=0; 36 37 private string m_strSubItemText ; 38 39 private int m_nSubItemSelected = 0 ; 40 41 private ComboBox[] m_arrComboBoxes = new ComboBox[20]; 42 43 private System.Windows.Forms.TextBox editBox; 44 45 private Font m_fontComboBox; 46 47 private Font m_fontEdit; 48 49 private Color m_bgcolorComboBox; 50 51 private Color m_bgcolorEdit; 52 53 54 55 public ALAN_EditListView() 56 { 57 58 editBox = new System.Windows.Forms.TextBox(); 59 60 this.ComboBoxFont = this.Font; 61 62 this.EditFont = this.Font; 63 64 65 66 this.EditBgColor = Color.LightBlue; 67 68 this.m_bgcolorComboBox = Color.LightBlue; 69 70 this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.SMKMouseDown); 71 72 this.DoubleClick += new System.EventHandler(this.SMKDoubleClick); 73 74 this.GridLines = true ; 75 76 77 78 editBox.Size = new System.Drawing.Size(0,0); 79 80 editBox.Location = new System.Drawing.Point(0,0); 81 82 this.Controls.AddRange(new System.Windows.Forms.Control[] {this.editBox}); 83 84 editBox.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.EditOver); 85 86 editBox.LostFocus += new System.EventHandler(this.FocusOver); 87 88 editBox.AutoSize = true; 89 90 editBox.Font = this.EditFont; 91 92 editBox.BackColor = this.EditBgColor; 93 94 editBox.BorderStyle = BorderStyle.FixedSingle; 95 96 editBox.Hide(); 97 98 editBox.Text = ""; 99 100 } 101 102 103 104 public Font ComboBoxFont 105 { 106 107 get { return this.m_fontComboBox; } 108 109 set { this.m_fontComboBox = value;} 110 111 } 112 113 114 115 public Color ComboBoxBgColor 116 { 117 118 get { return this.m_bgcolorComboBox; } 119 120 set 121 122 { 123 124 this.m_bgcolorComboBox = value; 125 126 for(int i=0; i<this.m_arrComboBoxes.Length; i++) 127 128 { 129 130 if (m_arrComboBoxes[i] != null) 131 132 m_arrComboBoxes[i].BackColor = this.m_bgcolorComboBox; 133 134 } 135 136 } 137 138 } 139 140 141 142 public Font EditFont 143 { 144 145 get { return this.m_fontEdit; } 146 147 set 148 149 { 150 151 this.m_fontEdit = value; 152 153 this.editBox.Font = this.m_fontEdit; 154 155 } 156 157 } 158 159 160 161 public Color EditBgColor 162 { 163 164 get { return this.m_bgcolorEdit; } 165 166 set 167 168 { 169 170 this.m_bgcolorEdit = value; 171 172 this.editBox.BackColor = this.m_bgcolorEdit; 173 174 } 175 176 } 177 178 179 180 public void SetColumn(int columnIndex, ALAN_ListViewColumnStyle cs) 181 { 182 183 if (columnIndex<0 || columnIndex>this.Columns.Count) 184 185 throw new Exception("Column index is out of range"); 186 187 ((ALAN_ColumnHeader)Columns[columnIndex]).ColumnStyle = cs; 188 189 } 190 191 192 193 public void BoundListToColumn(int columnIndex, string[] items) 194 { 195 196 if (columnIndex<0 || columnIndex>this.Columns.Count) 197 198 throw new Exception("Column index is out of range"); 199 200 if ( ((ALAN_ColumnHeader)Columns[columnIndex]).ColumnStyle != ALAN_ListViewColumnStyle.ComboBox) 201 202 throw new Exception("Column should be ComboBox style"); 203 204 205 206 ComboBox newbox = new ComboBox(); 207 208 for(int i=0; i<items.Length; i++) 209 210 newbox.Items.Add(items[i]); 211 212 newbox.Size = new System.Drawing.Size(0,0); 213 214 newbox.Location = new System.Drawing.Point(0,0); 215 216 this.Controls.AddRange(new System.Windows.Forms.Control[] {newbox}); 217 218 newbox.SelectedIndexChanged += new System.EventHandler(this.CmbSelected); 219 220 newbox.LostFocus += new System.EventHandler(this.CmbFocusOver); 221 222 newbox.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.CmbKeyPress); 223 224 newbox.Font = this.ComboBoxFont; 225 226 newbox.BackColor = this.ComboBoxBgColor; 227 228 newbox.DropDownStyle = ComboBoxStyle.DropDownList; 229 230 newbox.Hide(); 231 232 this.m_arrComboBoxes[columnIndex] = newbox; 233 234 } 235 236 237 238 private void CmbKeyPress(object sender , System.Windows.Forms.KeyPressEventArgs e) 239 { 240 241 ComboBox cmbBox = (ComboBox)sender; 242 243 if ( e.KeyChar == 13 || e.KeyChar == 27 ) //CR or ESC press 244 245 { 246 247 cmbBox.Hide(); 248 249 } 250 251 } 252 253 254 255 private void CmbSelected(object sender , System.EventArgs e) 256 { 257 258 ComboBox cmbBox = (ComboBox)sender; 259 260 int sel = cmbBox.SelectedIndex; 261 262 if ( sel >= 0 ) 263 264 { 265 266 string itemSel = cmbBox.Items[sel].ToString(); 267 268 m_currentLVItem.SubItems[m_nSubItemSelected].Text = itemSel; 269 270 } 271 272 } 273 274 275 276 private void CmbFocusOver(object sender , System.EventArgs e) 277 { 278 279 ComboBox cmbBox = (ComboBox)sender; 280 281 cmbBox.Hide() ; 282 283 } 284 285 286 287 private void EditOver(object sender, System.Windows.Forms.KeyPressEventArgs e) 288 { 289 290 if ( e.KeyChar == 13 ) 291 292 { 293 294 m_currentLVItem.SubItems[m_nSubItemSelected].Text = editBox.Text; 295 296 editBox.Hide(); 297 298 } 299 300 301 302 if ( e.KeyChar == 27 ) 303 304 editBox.Hide(); 305 306 } 307 308 309 310 private void FocusOver(object sender, System.EventArgs e) 311 { 312 313 m_currentLVItem.SubItems[m_nSubItemSelected].Text = editBox.Text; 314 315 editBox.Hide(); 316 317 } 318 319 320 321 public void SMKDoubleClick(object sender, System.EventArgs e) 322 { 323 324 // Check the subitem clicked . 325 326 int nStart = m_nX ; //current mouse down X position 327 328 int spos = 0 ; 329 330 int epos = this.Columns[0].Width ; 331 332 for ( int i=0; i < this.Columns.Count ; i++) 333 334 { 335 336 if ( nStart > spos && nStart < epos ) 337 338 { 339 340 m_nSubItemSelected = i ; 341 342 break; 343 344 } 345 346 347 348 spos = epos ; 349 350 epos += this.Columns[i].Width; 351 352 } 353 354 355 356 m_strSubItemText = m_currentLVItem.SubItems[m_nSubItemSelected].Text ; 357 358 359 360 ALAN_ColumnHeader column = (ALAN_ColumnHeader)Columns[m_nSubItemSelected]; 361 362 if ( column.ColumnStyle == ALAN_ListViewColumnStyle.ComboBox ) 363 364 { 365 366 ComboBox cmbBox = this.m_arrComboBoxes[m_nSubItemSelected]; 367 368 if (cmbBox == null) 369 370 throw new Exception("The ComboxBox control bind to current column is null"); 371 372 Rectangle r = new Rectangle(spos , m_currentLVItem.Bounds.Y , epos , m_currentLVItem.Bounds.Bottom); 373 374 cmbBox.Size = new System.Drawing.Size(epos - spos , m_currentLVItem.Bounds.Bottom-m_currentLVItem.Bounds.Top); 375 376 cmbBox.Location = new System.Drawing.Point(spos , m_currentLVItem.Bounds.Y); 377 378 cmbBox.Show() ; 379 380 cmbBox.Text = m_strSubItemText; 381 382 cmbBox.SelectAll() ; 383 384 cmbBox.Focus(); 385 386 } 387 388 if ( column.ColumnStyle == ALAN_ListViewColumnStyle.EditBox ) 389 390 { 391 392 Rectangle r = new Rectangle(spos , m_currentLVItem.Bounds.Y , epos , m_currentLVItem.Bounds.Bottom); 393 394 editBox.Size = new System.Drawing.Size(epos - spos , m_currentLVItem.Bounds.Height); 395 396 editBox.Location = new System.Drawing.Point(spos , m_currentLVItem.Bounds.Y); 397 398 editBox.Show() ; 399 400 editBox.Text = m_strSubItemText; 401 402 editBox.SelectAll() ; 403 404 editBox.Focus(); 405 406 } 407 408 } 409 410 411 412 public void SMKMouseDown(object sender, System.Windows.Forms.MouseEventArgs e) 413 { 414 415 m_currentLVItem = this.GetItemAt(e.X , e.Y); 416 417 m_nX = e.X ; 418 419 m_nY = e.Y ; 420 421 } 422 }
|
| 客户代码如下： |
|
1
this
.listView1
=
new
MyControls.ALAN_EditListView(); 2 3
/**/
/////////////////////// 4 ///add the columns
5
MyControls.ALAN_ColumnHeader header1
=
new
MyControls.ALAN_ColumnHeader(MyControls.ALAN_ListViewColumnStyle.ReadOnly); 6 header1.Width
=
120
; 7 header1.Text
=
"
姓名
"
; 8
this
.listView1.Columns.Add(header1); 9 10 MyControls.ALAN_ColumnHeader header2
=
new
MyControls.ALAN_ColumnHeader(MyControls.ALAN_ListViewColumnStyle.EditBox); 11 header2.Width
=
120
; 12 header2.Text
=
"
性别
"
; 13
this
.listView1.Columns.Add(header2); 14 15 MyControls.ALAN_ColumnHeader header3
=
new
MyControls.ALAN_ColumnHeader(MyControls.ALAN_ListViewColumnStyle.EditBox); 16 header3.Width
=
120
; 17 header3.Text
=
"
年龄
"
; 18
this
.listView1.Columns.Add(header3); 19 20 MyControls.ALAN_ColumnHeader header4
=
new
MyControls.ALAN_ColumnHeader(MyControls.ALAN_ListViewColumnStyle.ComboBox); 21 header4.Width
=
120
; 22 header4.Text
=
"
专业
"
; 23
this
.listView1.Columns.Add(header4); 24 25 MyControls.ALAN_ColumnHeader header5
=
new
MyControls.ALAN_ColumnHeader(MyControls.ALAN_ListViewColumnStyle.ComboBox); 26 header5.Width
=
120
; 27 header5.Text
=
"
轮休
"
; 28
this
.listView1.Columns.Add(header5); 29 30
/**/
/////////////////////// 31 ///bound the combox
32
this
.listView1.BoundListToColumn(
3
,
new
string
[]
{"Lotus", "SQL Server", ".NET", "VB"}
); 33
this
.listView1.BoundListToColumn(
4
,
new
string
[]
{"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}
); 34 35
/**/
///////////////////////////////////// 36 ///set edit state font and backcolor
37
this
.listView1.ComboBoxFont
=
new
System.Drawing.Font(
"
Microsoft Sans Serif
"
, 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(
0
))); 38
this
.listView1.EditFont
=
new
System.Drawing.Font(
"
Microsoft Sans Serif
"
, 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(
0
))); 39 40
/**/
/////////////////////// 41 ///add rows
42
string
[] s
=
new
string
[
5
]; 43 s[
0
]
=
"
张三
"
; 44 s[
1
]
=
"
男
"
; 45 s[
2
]
=
"
24
"
; 46 s[
3
]
=
"
.NET
"
; 47 s[
4
]
=
"
Sun
"
; 48
this
.listView1.Items.Add(
new
ListViewItem(s)); 49 50 s[
0
]
=
"
李四
"
; 51 s[
1
]
=
"
男
"
; 52 s[
2
]
=
"
25
"
; 53 s[
3
]
=
"
SQL Server
"
; 54 s[
4
]
=
"
Mon
"
; 55
this
.listView1.Items.Add(
new
ListViewItem(s)); 56 57 s[
0
]
=
"
王五
"
; 58 s[
1
]
=
"
男
"
; 59 s[
2
]
=
"
23
"
; 60 s[
3
]
=
"
VB
"
; 61 s[
4
]
=
"
Tue
"
; 62
this
.listView1.Items.Add(
new
ListViewItem(s)); 63 64 s[
0
]
=
"
赵六
"
; 65 s[
1
]
=
"
女
"
; 66 s[
2
]
=
"
22
"
; 67 s[
3
]
=
"
Lotus
"
; 68 s[
4
]
=
"
Wed
"
; 69
this
.listView1.Items.Add(
new
ListViewItem(s)); 70 71
/**/
/////////////////////////// 72 ///other common attributs
73
this
.listView1.Dock
=
System.Windows.Forms.DockStyle.Fill; 74
this
.listView1.Font
=
new
System.Drawing.Font(
"
Microsoft Sans Serif
"
,
9.75F
, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(
0
))); 75
this
.listView1.FullRowSelect
=
true
; 76
this
.listView1.Name
=
"
listView1
"
; 77
this
.listView1.Size
=
new
System.Drawing.Size(
448
,
273
); 78
this
.listView1.TabIndex
=
0
; 79
this
.listView1.View
=
System.Windows.Forms.View.Details;
|
| That's All. Thanks! ^_^ |