public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
if (value is string valueStr)
{
valueStr = valueStr.Trim();
if (valueStr.Length == 0)
{
return(null);
}
// Parse 4 integer values.
if (culture == null)
{
culture = CultureInfo.CurrentCulture;
}
char sep = culture.TextInfo.ListSeparator[0];
string[] tokens = valueStr.Split(new char[] { sep });
int[] values = new int[tokens.Length];
TypeConverter intConverter = TypeDescriptor.GetConverter(typeof(int));
for (int i = 0; i < values.Length; i++)
{
// Note: ConvertFromString will raise exception if value cannot be converted.
values[i] = (int)intConverter.ConvertFromString(context, culture, tokens[i]);
}
if (values.Length != 4)
{
throw new ArgumentException(string.Format(SR.TextParseFailedFormat,
nameof(value),
valueStr,
"left, top, right, bottom"));
}
return(new Padding(values[0], values[1], values[2], values[3]));
}
return(base.ConvertFrom(context, culture, value));
}
/// <summary>
/// Converts the given object to the converter's native type.
/// </summary>
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
if (value is string valueStr)
{
string text = valueStr.Trim();
if (text.Length == 0)
{
return(null);
}
// Parse 2 integer values.
if (culture == null)
{
culture = CultureInfo.CurrentCulture;
}
char sep = culture.TextInfo.ListSeparator[0];
string[] tokens = text.Split(new char[] { sep });
int[] values = new int[tokens.Length];
TypeConverter intConverter = TypeDescriptor.GetConverter(typeof(int));
for (int i = 0; i < values.Length; i++)
{
values[i] = (int)intConverter.ConvertFromString(context, culture, tokens[i]);
}
if (values.Length != 2)
{
throw new ArgumentException(string.Format(SR.TextParseFailedFormat,
text,
"Start, Length"));
}
return(new LinkLabel.Link(values[0], values[1]));
}
return(base.ConvertFrom(context, culture, value));
}
