[C#/MAUI/.NET6] IValueConverter 인터페이스 : 실수→문자열 변환자 사용하기

■ IValueConverter 인터페이스를 구현해 실수→문자열 변환자를 사용하는 방법을 보여준다.

 

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using System.Globalization;

 

/// <summary>
/// 실수→문자열 변환자
/// </summary>
public class DoubleToStringConverter : 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)
{
if(int.TryParse((string)parameter, out int decimalPoint))
{
return ((double)sourceValue).ToString($"f{decimalPoint}");
}
else
{
return ((double)sourceValue).ToString();
}
}

 

#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)
{
throw new NotImplementedException();
}

 

#endregion
}
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