■ GridControl 클래스에서 DataTable 객체를 사용해 가상 데이터 소스를 만드는 방법을 보여준다.
▶ SampleData.cs
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using System.Data; namespace TestProject { /// <summary> /// 샘플 데이터 /// </summary> public class SampleData { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 샘플 테이블 구하기 - GetSampleTable(count) /// <summary> /// 샘플 테이블 구하기 /// </summary> /// <param name="count">카운트</param> /// <returns>샘플 테이블</returns> public static DataTable GetSampleTable(int count) { DataTable table = new DataTable(); table.Columns.Add("항목1", typeof(string)); table.Columns.Add("항목2", typeof(string)); table.Columns.Add("항목3", typeof(string)); table.Columns.Add("항목4", typeof(string)); table.Columns.Add("항목5", typeof(string)); for(int i = 0; i < count; i++) { table.Rows.Add("값 " + i.ToString(), "값 " + i.ToString(), "값 " + i.ToString(), "값 " + i.ToString(), "값 " + i.ToString()); } table.AcceptChanges(); return table; } #endregion } } |
▶ DataTableVirtualSourcePropertyDescriptor.cs
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using System; using System.ComponentModel; namespace TestProject { /// <summary> /// 데이터 테이블 가상 소스 속성 설명자 /// </summary> public class DataTableVirtualSourcePropertyDescriptor : PropertyDescriptor { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 속성명 /// </summary> private string propertyName; /// <summary> /// 속성 타입 /// </summary> private Type propertyType; /// <summary> /// 읽기 전용 여부 /// </summary> private bool isReadOnly; /// <summary> /// 가상 소스 /// </summary> private DataTableVirtualSource virtualSource; /// <summary> /// 인덱스 /// </summary> private int index; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 컴포넌트 타입 - ComponentType /// <summary> /// 컴포넌트 타입 /// </summary> public override Type ComponentType { get { return typeof(DataTableVirtualSource); } } #endregion #region 명칭 - Name /// <summary> /// 명칭 /// </summary> public override string Name { get { return this.propertyName; } } #endregion #region 속성 타입 - PropertyType /// <summary> /// 속성 타입 /// </summary> public override Type PropertyType { get { return this.propertyType; } } #endregion #region 읽기 전용 여부 - IsReadOnly /// <summary> /// 읽기 전용 여부 /// </summary> public override bool IsReadOnly { get { return this.isReadOnly; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - DataTableVirtualSourcePropertyDescriptor(virtuslSource, index, propertyName, propertyType, isReadOnly) /// <summary> /// 생성자 /// </summary> /// <param name="virtuslSource">가상 소스</param> /// <param name="index">인덱스</param> /// <param name="propertyName">속성명</param> /// <param name="propertyType">속성 타입</param> /// <param name="isReadOnly">읽기 전용 여부</param> public DataTableVirtualSourcePropertyDescriptor(DataTableVirtualSource virtuslSource, int index, string propertyName, Type propertyType, bool isReadOnly) : base(propertyName, null) { this.virtualSource = virtuslSource; this.index = index; this.propertyName = propertyName; this.propertyType = propertyType; this.isReadOnly = isReadOnly; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 값 리셋 가능 여부 구하기 - CanResetValue(component) /// <summary> /// 값 리셋 가능 여부 구하기 /// </summary> /// <param name="component">컴포넌트</param> /// <returns>값 리셋 가능 여부</returns> public override bool CanResetValue(object component) { return false; } #endregion #region 값 리셋하기 - ResetValue(component) /// <summary> /// 값 리셋하기 /// </summary> /// <param name="component">컴포넌트</param> public override void ResetValue(object component) { } #endregion #region 값 설정하기 - SetValue(component, value) /// <summary> /// 값 설정하기 /// </summary> /// <param name="component">컴포넌트</param> /// <param name="value">값</param> public override void SetValue(object component, object value) { this.virtualSource.SetRowValue(component, this.index, value); } #endregion #region 값 구하기 - GetValue(component) /// <summary> /// 값 구하기 /// </summary> /// <param name="component">컴포넌트</param> /// <returns>값</returns> public override object GetValue(object component) { return this.virtualSource.GetRowValue(component, this.index); } #endregion #region 값 직렬화 필수 여부 구하기 - ShouldSerializeValue(component) /// <summary> /// 값 직렬화 필수 여부 구하기 /// </summary> /// <param name="component">컴포넌트</param> /// <returns>값 직렬화 필수 여부</returns> public override bool ShouldSerializeValue(object component) { return true; } #endregion } } |
▶ DataTableVirtualSource.cs
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using System; using System.Collections; using System.ComponentModel; using System.Data; namespace TestProject { /// <summary> /// 데이터 테이블 가상 소스 /// </summary> public class DataTableVirtualSource : IList, ITypedList { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 소스 테이블 /// </summary> private DataTable sourceTable; /// <summary> /// 로우 카운트 /// </summary> private int rowCount; /// <summary> /// 컬럼 카운트 /// </summary> private int columnCount; /// <summary> /// 속성 설명자 컬렉션 /// </summary> private PropertyDescriptorCollection propertyDescriptorCollection; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 데이터 테이블 - DataTable /// <summary> /// 데이터 테이블 /// </summary> public DataTable DataTable { get { return this.sourceTable; } } #endregion #region 로우 카운트 - RowCount /// <summary> /// 로우 카운트 /// </summary> public int RowCount { get { return this.rowCount; } set { if(value < 1) { value = 0; } if(this.rowCount == value) { return; } this.rowCount = value; } } #endregion #region 컬럼 카운트 - ColumnCount /// <summary> /// 컬럼 카운트 /// </summary> public int ColumnCount { get { return this.columnCount; } set { if(value < 1) { value = 0; } if(this.columnCount == value) { return; } this.columnCount = value; SetPropertyDescriptorCollection(); } } #endregion #region (IList) 카운트 - Count /// <summary> /// 카운트 /// </summary> public virtual int Count { get { return this.rowCount; } } #endregion #region (IList) 동기화 여부 - IsSynchronized /// <summary> /// 동기화 여부 /// </summary> public virtual bool IsSynchronized { get { return true; } } #endregion #region (IList) 동기 루트 - SyncRoot /// <summary> /// 동기 루트 /// </summary> public virtual object SyncRoot { get { return true; } } #endregion #region (IList) 읽기 전용 여부 - IsReadOnly /// <summary> /// 읽기 전용 여부 /// </summary> public virtual bool IsReadOnly { get { return false; } } #endregion #region (IList) 고정 크기 여부 - IsFixedSize /// <summary> /// 고정 크기 여부 /// </summary> public virtual bool IsFixedSize { get { return true; } } #endregion #region (IList) 인덱서 - this[index] /// <summary> /// 인덱서 /// </summary> /// <param name="index">인덱스</param> /// <returns>값</returns> public object this[int index] { get { return this.sourceTable.Rows[index]; } set { } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - VirtualTable(sourceTable) /// <summary> /// 생성자 /// </summary> /// <param name="sourceTable">소스 테이블</param> public DataTableVirtualSource(DataTable sourceTable) { this.sourceTable = sourceTable; this.rowCount = GetRowCount(); this.columnCount = GetColumnCount(); SetPropertyDescriptorCollection(); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Internal #region 행 값 설정하기 - SetRowValue(row, columnIndex, value) /// <summary> /// 행 값 설정하기 /// </summary> /// <param name="row">행 객체</param> /// <param name="columnIndex">컬럼 인덱스</param> /// <param name="value">값</param> internal void SetRowValue(object row, int columnIndex, object value) { DataRow dataRow = row as DataRow; if(dataRow != null) { dataRow[columnIndex] = value; } } #endregion #region 행 값 구하기 - GetRowValue(row, columnIndex) /// <summary> /// 행 값 구하기 /// </summary> /// <param name="row">행 객체</param> /// <param name="columnIndex">컬럼 인덱스</param> /// <returns>행 값</returns> internal object GetRowValue(object row, int columnIndex) { DataRow dataRow = row as DataRow; if(dataRow != null) { return dataRow[columnIndex]; } else { return null; } } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Public #region (IList) 열거자 구하기 - GetEnumerator() /// <summary> /// 열거자 구하기 /// </summary> /// <returns>열거자</returns> public virtual IEnumerator GetEnumerator() { return null; } #endregion #region (IList) 복사하기 - CopyTo(array, index) /// <summary> /// 복사하기 /// </summary> /// <param name="array">배열</param> /// <param name="index">인덱스</param> public virtual void CopyTo(Array array, int index) { } #endregion #region (IList) 추가하기 - Add(value) /// <summary> /// 추가하기 /// </summary> /// <param name="value">값</param> /// <returns>처리 결과</returns> public virtual int Add(object value) { throw new NotImplementedException(); } #endregion #region (IList) 지우기 - Clear() /// <summary> /// 지우기 /// </summary> public virtual void Clear() { throw new NotImplementedException(); } #endregion #region (IList) 포함 여부 구하기 - Contains(value) /// <summary> /// 포함 여부 구하기 /// </summary> /// <param name="value">값</param> /// <returns>포함 여부</returns> public virtual bool Contains(object value) { throw new NotImplementedException(); } #endregion #region (IList) 인덱스 구하기 - IndexOf(value) /// <summary> /// 인덱스 구하기 /// </summary> /// <param name="value">값</param> /// <returns>인덱스</returns> public virtual int IndexOf(object value) { throw new NotImplementedException(); } #endregion #region (IList) 삽입하기 - Insert(index, value) /// <summary> /// 삽입하기 /// </summary> /// <param name="index">인덱스</param> /// <param name="value">값</param> public virtual void Insert(int index, object value) { throw new NotImplementedException(); } #endregion #region (IList) 제거하기 - Remove(value) /// <summary> /// 제거하기 /// </summary> /// <param name="value">값</param> public virtual void Remove(object value) { throw new NotImplementedException(); } #endregion #region (IList) 제거하기 - RemoveAt(index) /// <summary> /// 제거하기 /// </summary> /// <param name="index">인덱스</param> public virtual void RemoveAt(int index) { throw new NotImplementedException(); } #endregion #region (ITypedList) 항목 속성 컬렉션 구하기 - GetItemProperties(propertyDescriptorArray) /// <summary> /// 항목 속성 컬렉션 구하기 /// </summary> /// <param name="propertyDescriptorArray">속성 설명자 배열</param> /// <returns>항목 속성 컬렉션</returns> public PropertyDescriptorCollection GetItemProperties(PropertyDescriptor[] propertyDescriptorArray) { return this.propertyDescriptorCollection; } #endregion #region (ITypedList) 리스트명 구하기 - GetListName(propertyDescriptorArray) /// <summary> /// 리스트명 구하기 /// </summary> /// <param name="propertyDescriptorArray">속성 설명자 배열</param> /// <returns>리스트명</returns> public string GetListName(PropertyDescriptor[] propertyDescriptorArray) { return this.sourceTable.TableName; } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Protected #region 속성 설명자 컬렉션 설정하기 - SetPropertyDescriptorCollection() /// <summary> /// 속성 설명자 컬렉션 설정하기 /// </summary> protected virtual void SetPropertyDescriptorCollection() { DataTableVirtualSourcePropertyDescriptor[] propertyDescriptorArray = new DataTableVirtualSourcePropertyDescriptor[this.columnCount]; for(int i = 0; i < this.columnCount; i++) { propertyDescriptorArray[i] = new DataTableVirtualSourcePropertyDescriptor ( this, i, this.sourceTable.Columns[i].ColumnName, this.sourceTable.Columns[i].DataType, false ); } this.propertyDescriptorCollection = new PropertyDescriptorCollection(propertyDescriptorArray); } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private #region 로우 카운트 구하기 - GetRowCount() /// <summary> /// 로우 카운트 구하기 /// </summary> /// <returns>로우 카운트</returns> private int GetRowCount() { if(this.sourceTable == null) { return 0; } return this.sourceTable.Rows.Count; } #endregion #region 컬럼 카운트 구하기 - GetColumnCount() /// <summary> /// 컬럼 카운트 구하기 /// </summary> /// <returns>컬럼 카운트</returns> private int GetColumnCount() { if(this.sourceTable == null) { return 0; } return this.sourceTable.Columns.Count; } #endregion } } |
▶ MainForm.cs
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using DevExpress.XtraEditors; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : XtraForm { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); DataTableVirtualSource virtualSource = new DataTableVirtualSource(SampleData.GetSampleTable(1_000_000)); this.gridControl.DataSource = virtualSource; } #endregion } } |
