public string ToRtf()
{
var context = new RtfContext();
context.AddFont(DefaultFont.Name);
var sb = new StringBuilder();
foreach (var textBlock in textBlocks)
{
sb.Append($@"{{\pard {textBlock.ToRtf(context)}\par}}");
}
return(context.RtfHeader + sb.ToString() + "}");
}
public abstract string ToRtf(RtfContext context);
