■ UltraGrid 클래스에서 외부 필터링을 사용하는 방법을 보여준다.
▶ 예제 코드 (C#)
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using System; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using Infragistics.Win; using Infragistics.Win.UltraWinDataSource; using Infragistics.Win.UltraWinGrid; /// <summary> /// UltraGrid /// </summary> private UltraGrid ultraGrid; /// <summary> /// UltraDataSource /// </summary> private UltraDataSource ultraDataSource; ... /// <summary> /// 레코드 /// </summary> public class Record { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// ID 카운터 /// </summary> private static int _idCounter = 0; #endregion ////////////////////////////////////////////////////////////////////////////////////////// Instance //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// ID /// </summary> private int id; /// <summary> /// 텍스트 /// </summary> private string text; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region ID - ID /// <summary> /// ID /// </summary> public int ID { get { return this.id; } set { this.id = value; } } #endregion #region 텍스트 - Text /// <summary> /// 텍스트 /// </summary> public string Text { get { return this.text; } set { this.text = value; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// 생성자 ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - Record(text) /// <summary> /// 생성자 /// </summary> /// <param name="text">텍스트</param> public Record(string text) { this.id = _idCounter; _idCounter++; this.text = text; } #endregion } ... /// <summary> /// 난수 발생자 /// </summary> private Random random = new Random(); /// <summary> /// 데이터 셋 /// </summary> private DataSet dataSet; /// <summary> /// 데이터 행 배열 /// </summary> private DataRow[] dataRowArray; ... #region 폼 로드시 처리하기 - Form_Load(sender, e) /// <summary> /// 폼 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Form_Load(object sender, EventArgs e) { SetUltraDataSource(); this.ultraGrid.DisplayLayout.LoadStyle = LoadStyle.LoadOnDemand; this.ultraGrid.DisplayLayout.Override.RowFilterAction = RowFilterAction.None; this.ultraGrid.DataSource = this.ultraDataSource; this.ultraGrid.DisplayLayout.Bands[0].Columns["Text"].AllowRowFiltering = DefaultableBoolean.True; this.ultraGrid.BeforeRowFilterDropDownPopulate += ultraGrid_BeforeRowFilterDropDownPopulate; this.ultraGrid.AfterRowFilterChanged += ultraGrid_AfterRowFilterChanged; } #endregion #region UltraGrid 행 필터 드롭 다운 작성 전 처리하기 - ultraGrid_BeforeRowFilterDropDownPopulate(sender, e) /// <summary> /// UltraGrid 행 필터 드롭 다운 작성 전 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void ultraGrid_BeforeRowFilterDropDownPopulate(object sender, BeforeRowFilterDropDownPopulateEventArgs e) { if("Text" == e.Column.Key) { for(int i = e.ValueList.ValueListItems.Count - 1; i >= 0; i--) { if(e.ValueList.ValueListItems[i].DisplayText.Equals("(Custom)")) { e.ValueList.ValueListItems.RemoveAt(i); } else if(e.ValueList.ValueListItems[i].DisplayText.Equals("(Blanks)")) { e.ValueList.ValueListItems.RemoveAt(i); } else if(e.ValueList.ValueListItems[i].DisplayText.Equals("(NonBlanks)")) { e.ValueList.ValueListItems.RemoveAt(i); } } e.ValueList.ValueListItems.Add("A"); e.ValueList.ValueListItems.Add("B"); e.ValueList.ValueListItems.Add("C"); e.ValueList.ValueListItems.Add("D"); } } #endregion #region UltraGrid 행 필터 변경 후 처리하기 - ultraGrid_AfterRowFilterChanged(sender, e) /// <summary> /// UltraGrid 행 필터 변경 후 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void ultraGrid_AfterRowFilterChanged(object sender, AfterRowFilterChangedEventArgs e) { if(e.NewColumnFilter.FilterConditions.Count > 0) { Cursor.Current = Cursors.WaitCursor; if((e.NewColumnFilter.FilterConditions[0].CompareValue).ToString() == "A") { this.dataRowArray = this.dataSet.Tables[0].Select("Text LIKE 'A%'"); } else if((e.NewColumnFilter.FilterConditions[0].CompareValue).ToString() == "B") { this.dataRowArray = this.dataSet.Tables[0].Select("Text LIKE 'B%'"); } else if((e.NewColumnFilter.FilterConditions[0].CompareValue).ToString() == "C") { this.dataRowArray = this.dataSet.Tables[0].Select("Text LIKE 'C%'"); } else if((e.NewColumnFilter.FilterConditions[0].CompareValue).ToString() == "D") { this.dataRowArray = this.dataSet.Tables[0].Select("Text LIKE 'D%'"); } } else { this.dataRowArray = this.dataSet.Tables[0].Select(); } Cursor.Current = Cursors.Default; this.ultraDataSource.Rows.ResetCachedValues(); this.ultraDataSource.Rows.SetCount(this.dataRowArray.Length); } #endregion #region UltraDataSource 셀 데이터 필요시 처리하기 - ultraDataSource_CellDataRequested(sender, e) /// <summary> /// UltraDataSource 셀 데이터 필요시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void ultraDataSource_CellDataRequested(object sender, CellDataRequestedEventArgs e) { string columnKey = e.Column.Key; if(this.dataRowArray.Length > e.Row.Index) { if("ID" == columnKey) { e.Data = (int)dataRowArray[e.Row.Index][0]; } else if("Text" == columnKey) { e.Data = (string)dataRowArray[e.Row.Index][1]; } } e.CacheData = false; } #endregion #region 임의 문자열 구하기 - GetRandomString(stringLength) /// <summary> /// 임의 문자열 구하기 /// </summary> /// <param name="stringLength">문자열 길이</param> /// <returns>임의 문자열</returns> private string GetRandomString(int stringLength) { StringBuilder stringBuilder = new StringBuilder(stringLength); for(int i = 0; i < stringLength; i++) { stringBuilder.Append((char)('A' + this.random.Next('Z' - 'A'))); } return stringBuilder.ToString(); } #endregion #region 데이터 소스 설정하기 - SetUltraDataSource() /// <summary> /// 데이터 소스 설정하기 /// </summary> private void SetUltraDataSource() { DataTable dataTable = new DataTable(); dataTable.Columns.Add("ID" , typeof(int )); dataTable.Columns.Add("Text", typeof(string)); for(int i = 0; i < 1000000; i++) { Record record = new Record(GetRandomString(10)); dataTable.Rows.Add(record.ID, record.Text); } this.dataSet = new DataSet(); this.dataSet.Tables.Add(dataTable); this.dataRowArray = dataTable.Select(); this.ultraDataSource.Band.Columns.Add("ID", typeof(int)); this.ultraDataSource.Band.Columns["ID"].ReadOnly = DefaultableBoolean.True; this.ultraDataSource.Band.Columns.Add("Text", typeof(string)); this.ultraDataSource.Rows.SetCount(this.dataSet.Tables[0].Rows.Count); this.ultraDataSource.CellDataRequested += ultraDataSource_CellDataRequested; } #endregion |