public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
if (value is string)
{
try
{
string s = (string)value;
int colon = s.IndexOf(':');
int comma = s.IndexOf(',');
if (colon != -1 && comma != -1)
{
string checkWhileTyping = s.Substring(colon + 1, (comma - colon - 1));
colon = s.IndexOf(':', comma + 1);
comma = s.IndexOf(',', comma + 1);
string checkCaps = s.Substring(colon + 1, (comma - colon - 1));
colon = s.IndexOf(':', comma + 1);
string suggCorr = s.Substring(colon + 1);
SpellingOptions so = new SpellingOptions();
so.SpellCheckWhileTyping = Boolean.Parse(checkWhileTyping);
so.SpellCheckCAPS = Boolean.Parse(checkCaps);
so.SuggestCorrections = Boolean.Parse(suggCorr);
return(so);
}
}
catch
{
throw new ArgumentException(
"无法将“" + (string)value + "”转换为 SpellingOptions 类型");
}
}
return(base.ConvertFrom(context, culture, value));
}
public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (destinationType == typeof(System.String) &&
value is SpellingOptions)
{
SpellingOptions so = (SpellingOptions)value;
return("在键入时检查:" + so.SpellCheckWhileTyping +
"，检查大小写: " + so.SpellCheckCAPS +
"，建议更正: " + so.SuggestCorrections);
}
return(base.ConvertTo(context, culture, value, destinationType));
}
