public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (destinationType == typeof(string))
{
EmbeddedBitmapData bitmapInfo = (EmbeddedBitmapData)value;
MemoryStream memoryStream = bitmapInfo.Stream;
return(Convert.ToBase64String(memoryStream.ToArray()));
}
return(base.ConvertTo(context, culture, value, destinationType));
}
/// <summary>
/// In the designer Data is not set. To prevent exceptions when displaying in the Designer, add a dummy bitmap.
/// </summary>
private void EnsureStream()
{
if (_stream == null)
{
BitmapSource dummyBitmap = BitmapSource.Create(1, 1, 96.0, 96.0,
PixelFormats.Pbgra32, null, new byte[] { 0, 0, 0, 0 }, 4);
PngBitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(dummyBitmap));
MemoryStream stream = new MemoryStream();
encoder.Save(stream);
Data = new EmbeddedBitmapData(stream);
}
}
