내가 지금까지 함께 왔어요 최저 :
1 단계 : 노다 클래스를 편집 할 수 있습니다 것을
public class ToAndFromStringTypeConverter : TypeConverter
{
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
{
if (sourceType == typeof(string))
return true;
else
return base.CanConvertFrom(context, sourceType);
}
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
{
if (destinationType == typeof(string))
return true;
else
return base.CanConvertTo(context, destinationType);
}
}
public class LocalDateTypeConverter : ToAndFromStringTypeConverter
{
public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
if (value is string)
{
DateTime parsed;
if (!DateTime.TryParse((string)value, out parsed))
throw new ArgumentException("Cannot convert '" + (string)value + "' to LocalDate.");
else
return new LocalDate(parsed.Year, parsed.Month, parsed.Day);
}
else
{
return base.ConvertFrom(context, culture, value);
}
}
public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (destinationType == typeof(string))
{
var tvalue = (LocalDate)value;
try
{
var x = tvalue.ToString("yyyy-MM-dd");
return x;
}
catch (NullReferenceException)
{
return "1900-1-1";
}
catch
{
throw new ArgumentException("Could not convert '" + value.ToString() + "' to LocalDate.");
}
}
else
return base.ConvertTo(context, culture, value, destinationType);
}
public class InstantTypeConverter : ToAndFromStringTypeConverter
{
public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
if (value is string)
{
try
{
DateTime parsed = DateTime.Parse((string)value);
LocalDateTime dt = LocalDateTime.FromDateTime(parsed);
Instant i = dt.InZoneLeniently(DateTimeZoneProviders.Default.GetSystemDefault()).ToInstant();
return i;
}
catch
{
throw new ArgumentException("Cannot convert '" + (string)value + "' to Instant.");
}
}
else
{
return base.ConvertFrom(context, culture, value);
}
}
public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (destinationType == typeof(string))
{
try
{
Instant tvalue = (Instant)value;
LocalDateTime local = tvalue.InZone(DateTimeZoneProviders.Default.GetSystemDefault()).LocalDateTime;
string output = LocalDateTimePattern.CreateWithInvariantCulture("yyyy-MM-dd HH:mm:ss.FFFFFF").Format(local);
return output;
}
catch
{
throw new ArgumentException("Could not convert '" + value.ToString() + "' to LocalDate.");
}
}
else
return base.ConvertTo(context, culture, value, destinationType);
}
}
2 단계 있도록 TypeConverter가의의를 만듭니다 TypeConverters 등록
를 사용하여 사용자 정의 컬렉션 편집기이 적절한 속성에이 속성을 추가하여 등록 할 수 있습니다
public class NodaCollectionEditor : System.ComponentModel.Design.CollectionEditor
{
public NodaCollectionEditor(Type collection_type) : base(collection_type) { }
protected override object CreateInstance(Type itemType)
{
if (itemType == typeof(LocalDate))
return LocalDateHelper.MinValue;
else
return base.CreateInstance(itemType);
}
}
목록 같은 것들을 처리하기 위해 : 3
TypeDescriptor.AddAttributes(typeof(LocalDate), new TypeConverterAttribute(typeof(LocalDateTypeConverter)));
TypeDescriptor.AddAttributes(typeof(Instant), new TypeConverterAttribute(typeof(InstantTypeConverter)));
단계 :
앱의 상단에이 코드를 넣어 :
[System.ComponentModel.Editor(typeof(NodaCollectionEditor),typeof(System.Drawing.Design.UITypeEditor))]