这很烦人:
<GeometryDrawing>
<GeometryDrawing.Pen>
<Pen Brush="Black"/>
</GeometryDrawing.Pen>
</GeometryDrawing>
我要这个:
<GeometryDrawing Pen="Black"/>
所以我写了一个TypeConverter:
public class PenConverter : TypeConverter
{
static readonly BrushConverter brushConverter = new BrushConverter();
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
{
if (sourceType == typeof(string)) return true;
return base.CanConvertFrom(context, sourceType);
}
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
var s = value as string;
if (a != null)
{
var brush = brushConverter.ConvertFromInvariantString(s) as Brush;
return new Pen(brush, 1);
}
return base.ConvertFrom(context, culture, value);
}
}
现在,我如何将其与笔类型链接?我不能只为它添加一个TypeConverterAttribute,因为我没有它(我也没有GeometryDrawing.Pen属性).
最佳答案
This link here声称你可以做类似的事情(复制逐字,对那个人的信用)
public static void Register<T, TC>() where TC: TypeConverter
{
Attribute[] attr = new Attribute[1];
TypeConverterAttribute vConv = new TypeConverterAttribute(typeof(TC));
attr[0] = vConv;
TypeDescriptor.AddAttributes(typeof(T), attr);
}
该方法的最后一部分似乎可以解决问题.