■ GridControl 클래스에서 대용량 데이터를 바인딩하는 방법을 보여준다.
▶ IItemGenerator.cs
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 |
namespace TestProject { /// <summary> /// 항목 제너레이터 인터페이스 /// </summary> /// <typeparam name="TItem">항목 타입</typeparam> public interface IItemGenerator<TItem> { //////////////////////////////////////////////////////////////////////////////////////////////////// Property #region 항목 수 - Count /// <summary> /// 항목 수 /// </summary> int Count { get; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method #region 항목 생성하기 - CreateItem(index) /// <summary> /// 항목 생성하기 /// </summary> /// <param name="index">인덱스</param> /// <returns>항목</returns> TItem CreateItem(int index); #endregion } } |
▶ VirtualList.cs
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 |
using System; using System.Collections; using System.Collections.Generic; namespace TestProject { /// <summary> /// 가상 리스트 /// </summary> /// <typeparam name="TItem">항목 타입</typeparam> public class VirtualList<TItem> : IList<TItem>, IList where TItem : class { //////////////////////////////////////////////////////////////////////////////////////////////////// Class ////////////////////////////////////////////////////////////////////////////////////////// Private #region 가상 열거자 - VirtualEnumerator /// <summary> /// 가상 열거자 /// </summary> private class VirtualEnumerator : IEnumerator<TItem> { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 가상 리스트 /// </summary> private readonly VirtualList<TItem> virtualList; /// <summary> /// 현재 인덱스 /// </summary> private int currentIndex; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region (IEnumerator<T>) 현재 항목 - Current /// <summary> /// 현재 항목 /// </summary> public TItem Current { get { return this.virtualList[this.currentIndex]; } } #endregion #region (IEnumerator) 현재 항목 - IEnumerator.Current /// <summary> /// 현재 항목 /// </summary> object IEnumerator.Current { get { return Current; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - VirtualEnumerator(virtualList) /// <summary> /// 생성자 /// </summary> /// <param name="virtualList">가상 리스트</param> public VirtualEnumerator(VirtualList<TItem> virtualList) { this.virtualList = virtualList; this.currentIndex = 0; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region (IEnumerator<T>) 다음 항목으로 이동하기 - MoveNext() /// <summary> /// 다음 항목으로 이동하기 /// </summary> /// <returns>처리 결과</returns> public bool MoveNext() { if(this.currentIndex == this.virtualList.Count) { return false; } ++this.currentIndex; return true; } #endregion #region (IEnumerator<T>) 리셋하기 - Reset() /// <summary> /// 리셋하기 /// </summary> public void Reset() { this.currentIndex = 0; } #endregion #region (IEnumerator<T>) 리소스 해제하기 - Dispose() /// <summary> /// 리소스 해제하기 /// </summary> public void Dispose() { } #endregion } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 항목 제너레이터 /// </summary> private readonly IItemGenerator<TItem> itemGenerator; /// <summary> /// 캐시 항목 배열 /// </summary> private readonly TItem[] cacheItemArray; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region (IList) 고정 크기 여부 - IsFixedSize /// <summary> /// 고정 크기 여부 /// </summary> public bool IsFixedSize { get { return true; } } #endregion #region (IList) 인덱서 - IList.this[index] /// <summary> /// 인덱서 /// </summary> /// <param name="index">인덱스</param> /// <returns>항목</returns> object IList.this[int index] { get { return this[index]; } set { throw new NotSupportedException("VirtualList is a read-only collection."); } } #endregion #region (IList<T>) 인덱서 - this[index] /// <summary> /// 인덱서 /// </summary> /// <param name="index">인덱스</param> /// <returns>항목</returns> public TItem this[int index] { get { if(!IsItemCached(index)) { CacheItem(index); } return this.cacheItemArray[index]; } set { throw new NotSupportedException("VirtualList is a read-only collection."); } } #endregion #region (ICollection) 동기화 여부 - IsSynchronized /// <summary> /// 동기화 여부 /// </summary> public bool IsSynchronized { get { return false; } } #endregion #region (ICollection) 동기 객체 - SyncRoot /// <summary> /// 동기 객체 /// </summary> public object SyncRoot { get { return this; } } #endregion #region (ICollection<T>) 항목 수 - Count /// <summary> /// 항목 수 /// </summary> public int Count { get { return this.cacheItemArray.Length; } } #endregion #region (ICollection<T>) 읽기 전용 여부 - IsReadOnly /// <summary> /// 읽기 전용 여부 /// </summary> public bool IsReadOnly { get { return true; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - VirtualList(itemGenerator) /// <summary> /// 생성자 /// </summary> /// <param name="objectGenerator">객체 제너레이터</param> public VirtualList(IItemGenerator<TItem> itemGenerator) { this.itemGenerator = itemGenerator; this.cacheItemArray = new TItem[this.itemGenerator.Count]; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region (IList) 추가하기 - Add(value) /// <summary> /// 추가하기 /// </summary> /// <param name="value">값</param> /// <returns>인덱스</returns> public int Add(object value) { throw new NotSupportedException("VirtualList is a read-only collection."); } #endregion #region (IList) 삽입하기 - Insert(index, value) /// <summary> /// 삽입하기 /// </summary> /// <param name="index">인덱스</param> /// <param name="value">값</param> public void Insert(int index, object value) { throw new NotSupportedException("VirtualList is a read-only collection."); } #endregion #region (IList) 제거하기 - Remove(value) /// <summary> /// 제거하기 /// </summary> /// <param name="value">값</param> public void Remove(object value) { throw new NotSupportedException("VirtualList is a read-only collection."); } #endregion #region (IList) 인덱스 구하기 - IndexOf(value) /// <summary> /// 인덱스 구하기 /// </summary> /// <param name="value">값</param> /// <returns>인덱스</returns> public int IndexOf(object value) { int cacheItemArrayLength = this.cacheItemArray.Length; for(int index = 0; index < cacheItemArrayLength; ++index) { if(this.cacheItemArray[index].Equals(value)) { return index; } } return -1; } #endregion #region (IList) 포함 여부 구하기 - Contains(value) /// <summary> /// 포함 여부 구하기 /// </summary> /// <param name="value">값</param> /// <returns>포함 여부</returns> public bool Contains(object value) { throw new NotImplementedException(); } #endregion #region (IList<T>) 삽입하기 - Insert(index, item) /// <summary> /// 삽입하기 /// </summary> /// <param name="index">인덱스</param> /// <param name="item">항목</param> public void Insert(int index, TItem item) { throw new NotSupportedException("VirtualList is a read-only collection."); } #endregion #region (IList<T>) 항목 제거하기 - RemoveAt(index) /// <summary> /// 항목 제거하기 /// </summary> /// <param name="index">인덱스</param> public void RemoveAt(int index) { throw new NotSupportedException("VirtualList is a read-only collection."); } #endregion #region (IList<T>) 인덱스 구하기 - IndexOf(item) /// <summary> /// 인덱스 구하기 /// </summary> /// <param name="item">항목</param> /// <returns>인덱스</returns> public int IndexOf(TItem item) { return IndexOf(item); } #endregion #region (ICollection) 복사하기 - CopyTo(array, index) /// <summary> /// 복사하기 /// </summary> /// <param name="array">배열</param> /// <param name="index">인덱스</param> public void CopyTo(Array array, int index) { this.cacheItemArray.CopyTo(array, index); } #endregion #region (ICollection<T>) 추가하기 - Add(item) /// <summary> /// 추가하기 /// </summary> /// <param name="item">항목</param> public void Add(TItem item) { throw new NotSupportedException("VirtualList is a read-only collection."); } #endregion #region (ICollection<T>) 제거하기 - Remove(item) /// <summary> /// 제거하기 /// </summary> /// <param name="item">항목</param> /// <returns>처리 결과</returns> public bool Remove(TItem item) { throw new NotSupportedException("VirtualList is a read-only collection."); } #endregion #region (ICollection<T>) 지우기 - Clear() /// <summary> /// 지우기 /// </summary> public void Clear() { throw new NotSupportedException("VirtualList is a read-only collection."); } #endregion #region (ICollection<T>) 포함 여부 구하기 - Contains(item) /// <summary> /// 포함 여부 구하기 /// </summary> /// <param name="item">항목</param> /// <returns>포함 여부</returns> public bool Contains(TItem item) { return (IndexOf(item) != -1); } #endregion #region (ICollection<T>) 복사하기 - CopyTo(array, index) /// <summary> /// 복사하기 /// </summary> /// <param name="array">배열</param> /// <param name="index">인덱스</param> public void CopyTo(TItem[] array, int index) { this.cacheItemArray.CopyTo(array, index); } #endregion #region (IEnumerable) 열거자 구하기 - IEnumerable.GetEnumerator() /// <summary> /// 열거자 구하기 /// </summary> /// <returns>열거자</returns> IEnumerator IEnumerable.GetEnumerator() { return new VirtualEnumerator(this); } #endregion #region (IEnumerable<T>) 열거자 구하기 - GetEnumerator() /// <summary> /// 열거자 구하기 /// </summary> /// <returns>열거자</returns> public IEnumerator<TItem> GetEnumerator() { return new VirtualEnumerator(this); } #endregion #region 항목 캐시하기 - CacheItem(index) /// <summary> /// 항목 캐시하기 /// </summary> /// <param name="index">인덱스</param> public void CacheItem(int index) { this.cacheItemArray[index] = this.itemGenerator.CreateItem(index); } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private #region 항목 캐시 여부 구하기 - IsItemCached(index) /// <summary> /// 항목 캐시 여부 구하기 /// </summary> /// <param name="index">인덱스</param> /// <returns>항목 캐시 여부</returns> private bool IsItemCached(int index) { return (this.cacheItemArray[index] != null); } #endregion } } |
▶ SampleItem.cs
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 |
namespace TestProject { /// <summary> /// 샘플 항목 /// </summary> public class SampleItem { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public public int Value01 { get; set; } public int Value02 { get; set; } public int Value03 { get; set; } public int Value04 { get; set; } public int Value05 { get; set; } public int Value06 { get; set; } public int Value07 { get; set; } public int Value08 { get; set; } public int Value09 { get; set; } public int Value10 { get; set; } public int Value11 { get; set; } public int Value12 { get; set; } public int Value13 { get; set; } public int Value14 { get; set; } public int Value15 { get; set; } public int Value16 { get; set; } public int Value17 { get; set; } public int Value18 { get; set; } public int Value19 { get; set; } public int Value20 { get; set; } public int Value21 { get; set; } public int Value22 { get; set; } public int Value23 { get; set; } public int Value24 { get; set; } public int Value25 { get; set; } public int Value26 { get; set; } public int Value27 { get; set; } public int Value28 { get; set; } public int Value29 { get; set; } public int Value30 { get; set; } public int Value31 { get; set; } public int Value32 { get; set; } public int Value33 { get; set; } public int Value34 { get; set; } public int Value35 { get; set; } public int Value36 { get; set; } public int Value37 { get; set; } public int Value38 { get; set; } public int Value39 { get; set; } public int Value40 { get; set; } public int Value41 { get; set; } public int Value42 { get; set; } public int Value43 { get; set; } public int Value44 { get; set; } public int Value45 { get; set; } public int Value46 { get; set; } public int Value47 { get; set; } public int Value48 { get; set; } public int Value49 { get; set; } public int Value50 { get; set; } } } |
▶ SampleItemGenerator.cs
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 |
namespace TestProject { /// <summary> /// 샘플 항목 제너레이터 /// </summary> public class SampleItemGenerator : IItemGenerator<SampleItem> { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 항목 수 /// </summary> private readonly int count; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region (IItemGenerator<T>) 항목 수 - Count /// <summary> /// 항목 수 /// </summary> public int Count { get { return this.count; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - SampleItemGenerator() /// <summary> /// 생성자 /// </summary> public SampleItemGenerator() { this.count = 100000000; // 1억 } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region (IItemGenerator<T>) 항목 생성하기 - CreateItem(index) /// <summary> /// 항목 생성하기 /// </summary> /// <param name="index">인덱스</param> /// <returns>항목</returns> public SampleItem CreateItem(int index) { return new SampleItem { Value01 = index, Value02 = index, Value03 = index, Value04 = index, Value05 = index, Value06 = index, Value07 = index, Value08 = index, Value09 = index, Value10 = index, Value11 = index, Value12 = index, Value13 = index, Value14 = index, Value15 = index, Value16 = index, Value17 = index, Value18 = index, Value19 = index, Value20 = index, Value21 = index, Value22 = index, Value23 = index, Value24 = index, Value25 = index, Value26 = index, Value27 = index, Value28 = index, Value29 = index, Value30 = index, Value31 = index, Value32 = index, Value33 = index, Value34 = index, Value35 = index, Value36 = index, Value37 = index, Value38 = index, Value39 = index, Value40 = index, Value41 = index, Value42 = index, Value43 = index, Value44 = index, Value45 = index, Value46 = index, Value47 = index, Value48 = index, Value49 = index, Value50 = index, }; } #endregion } } |
▶ MainForm.cs
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 |
using System.Windows.Forms; using DevExpress.XtraGrid.Columns; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.gridView.OptionsView.ShowGroupPanel = false; this.gridView.OptionsView.ColumnAutoWidth = false; VirtualList<SampleItem> list = new VirtualList<SampleItem>(new SampleItemGenerator()); this.gridControl.DataSource = list; foreach(GridColumn column in this.gridView.Columns) { column.Width = 100; } } #endregion } } |
