■ IDXDataErrorInfo 인터페이스를 사용해 데이터를 검증하는 방법을 보여준다.
▶ Task.cs
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using System; using DevExpress.XtraEditors.DXErrorProvider; namespace TestProject { /// <summary> /// 작업 /// </summary> public class Task : IDXDataErrorInfo { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 작업명 - TaskName /// <summary> /// 작업명 /// </summary> public string TaskName { get; set; } #endregion #region 시작 일자 - StartDate /// <summary> /// 시작 일자 /// </summary> public DateTime StartDate { get; set; } #endregion #region 종료 일자 - EndDate /// <summary> /// 종료 일자 /// </summary> public DateTime EndDate { get; set; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public // IDXDataErrorInfo #region 에러 구하기 - GetError(errorInfo) /// <summary> /// 에러 구하기 /// </summary> /// <param name="errorInfo">ErrorInfo 객체</param> public void GetError(ErrorInfo errorInfo) { if(StartDate > EndDate) { SetErrorInfo(errorInfo, "Either StartDate or EndDate should be corrected.", ErrorType.Critical); } } #endregion // IDXDataErrorInfo #region 속성 에러 구하기 - GetPropertyError(propertyName, errorInfo) /// <summary> /// 속성 에러 구하기 /// </summary> /// <param name="propertyName">속성명</param> /// <param name="errorInfo">ErrorInfo 객체</param> public void GetPropertyError(string propertyName, ErrorInfo errorInfo) { switch(propertyName) { case "StartDate" : if(StartDate > EndDate) { SetErrorInfo(errorInfo, "StartDate must be less than EndDate", ErrorType.Critical); } break; case "EndDate" : if(StartDate > EndDate) { SetErrorInfo(errorInfo, "EndDate must be greater than StartDate", ErrorType.Critical); } break; case "TaskName" : if(IsStringEmpty(TaskName)) { SetErrorInfo(errorInfo, "Task name hasn't been entered", ErrorType.Information); } break; } } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private #region ErrorInfo 객체 설정하기 - SetErrorInfo(errorInfo, errorMessage, errorType) /// <summary> /// ErrorInfo 객체 설정하기 /// </summary> /// <param name="errorInfo">ErrorInfo 객체</param> /// <param name="errorMessage">에러 메시지</param> /// <param name="errorType">에러 타입</param> private void SetErrorInfo(ErrorInfo errorInfo, string errorMessage, ErrorType errorType) { errorInfo.ErrorText = errorMessage; errorInfo.ErrorType = errorType; } #endregion #region 빈 문자열 여부 조사하기 - IsStringEmpty(source) /// <summary> /// 빈 문자열 여부 조사하기 /// </summary> /// <param name="source">소스 문자열</param> /// <returns>빈 문자열 여부</returns> private bool IsStringEmpty(string source) { return (source != null && source.Trim().Length == 0); } #endregion } } |
▶ MainWindow.xaml
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<Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:dxg="http://schemas.devexpress.com/winfx/2008/xaml/grid" Width="800" Height="600" Title="IDXDataErrorInfo 인터페이스 : 데이터 검증하기" FontFamily="나눔고딕코딩" FontSize="16"> <Grid> <dxg:GridControl x:Name="gridControl"> <dxg:GridControl.Columns> <dxg:GridColumn FieldName="TaskName" /> <dxg:GridColumn FieldName="StartDate" /> <dxg:GridColumn FieldName="EndDate" /> </dxg:GridControl.Columns> <dxg:GridControl.View> <dxg:TableView ValidateRow="tableView_ValidateRow" InvalidRowException="tableView_InvalidRowException" /> </dxg:GridControl.View> </dxg:GridControl> </Grid> </Window> |
▶ MainWindow.xaml.cs
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using System; using System.Windows; using DevExpress.Xpf.Grid; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); this.gridControl.ItemsSource = TaskList.GetData(); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 테이블 뷰 행 검증하기 - tableView_ValidateRow(sender, e) /// <summary> /// 테이블 뷰 행 검증하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void tableView_ValidateRow(object sender, GridRowValidationEventArgs e) { DateTime startDate = (e.Row as Task).StartDate; DateTime endDate = (e.Row as Task).EndDate; e.IsValid = startDate < endDate; } #endregion #region 테이블 뷰 적절치 못한 행 예외 처리하기 - tableView_InvalidRowException(sender, e) /// <summary> /// 테이블 뷰 적절치 못한 행 예외 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void tableView_InvalidRowException(object sender, InvalidRowExceptionEventArgs e) { e.ExceptionMode = ExceptionMode.NoAction; } #endregion } } |
