[C#/WPF] IValueConverter 인터페이스 : 날짜/시간↔문자열 변환자 사용하기

■ IValueConverter 인터페이스를 구현해 날짜/시간↔문자열 변환자를 사용하는 방법을 보여준다.

 

▶ 예제 코드 (C#)

using System;
using System.Globalization;
using System.Windows.Data;

/// <summary>
/// 날짜 변환자
/// </summary>
[ValueConversion(typeof (DateTime), typeof (string))]
public class DateConverter : IValueConverter
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Method
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region 변환하기 - Convert(sourceValue, targetType, parameter, cultureInfo)

    /// <summary>
    /// 변환하기
    /// </summary>
    /// <param name="sourceValue">소스 값</param>
    /// <param name="targetType">타겟 타입</param>
    /// <param name="parameter">매개 변수</param>
    /// <param name="cultureInfo">문화 정보</param>
    /// <returns>변환 값</returns>
    public object Convert(object sourceValue, Type targetType, object parameter, CultureInfo cultureInfo)
    {
        DateTime date = (DateTime)sourceValue;

        return date.ToShortDateString();
    }

    #endregion
    #region 역변환하기 - ConvertBack(sourceValue, targetType, parameter, cultureInfo)

    /// <summary>
    /// 역변환하기
    /// </summary>
    /// <param name="sourceValue">소스 값</param>
    /// <param name="targetType">타겟 타입</param>
    /// <param name="parameter">매개 변수</param>
    /// <param name="cultureInfo">문화 정보</param>
    /// <returns>역변환 값</returns>
    public object ConvertBack(object sourceValue, Type targetType, object parameter, CultureInfo cultureInfo)
    {
        string source = sourceValue.ToString();

        DateTime tartgetDate;

        if(DateTime.TryParse(source, out tartgetDate))
        {
            return tartgetDate;
        }

        return sourceValue;
    }

    #endregion
}