/// <summary>
/// Determines what to do when an Invalid Selector is found.
///
/// Returns True if we should just continue; False if we should skip this item.
/// </summary>
private bool OnInvalidSelector(string format, CustomFormatInfo info, PlaceholderInfo placeholder)
{
string invalidSelector = format.Substring(placeholder.selectorStart, placeholder.selectorLength);
string message;
switch (InvalidSelectorAction)
{
case ErrorAction.ThrowError:
// Let's give a detailed description of the error:
message = FormatEx(
("Invalid Format String.\\n" +
("Could not evaluate \"{0}\": \"{1}\" is not a member of {2}.\\n" +
("The error occurs at position {3} of the following format string:\\n" + "{4}"))),
invalidSelector, info.Selector, info.CurrentType, placeholder.placeholderStart, format);
throw new ArgumentException(message, invalidSelector);
case ErrorAction.OutputErrorInResult:
// Let's put the placeholder back,
// along with the error.
// Example: {Person.Name.ABC} becomes {Person.Name.ABC:(Error: "ABC" is not a member of String)}
message = ("{" + (FormatEx("{0}:(Error: \"{1}\" is not a member of {2})", invalidSelector,
info.Selector, info.CurrentType) + "}"));
info.WriteError(message, placeholder);
return(false);
case ErrorAction.Ignore:
// Allow formatting to continue!
break;
}
return(true);
}
/// <summary>
/// Determines what to do when an Invalid Selector is found.
/// </summary>
private void OnInvalidFormat(string format, CustomFormatInfo info, PlaceholderInfo placeholder, Exception ex)
{
string selector = format.Substring(placeholder.selectorStart, placeholder.selectorLength);
string invalidFormat = format.Substring(placeholder.formatStart, placeholder.formatLength);
string errorMessage = ex.Message;
if (ex is FormatException)
{
errorMessage = FormatEx("\"{0}\" is not a valid format specifier for {1}", invalidFormat,
info.CurrentType);
}
string message;
switch (InvalidFormatAction)
{
case ErrorAction.ThrowError:
// Let's give a detailed description of the error:
message = FormatEx(
("Invalid Format String.\\n" +
("Could not evaluate {{0}} because {1}.\\n" +
("The error occurs at position {2} of the following format string:\\n" + "{3}"))), selector,
errorMessage, placeholder.placeholderStart, format);
throw new ArgumentException(message, invalidFormat, ex);
case ErrorAction.OutputErrorInResult:
// Let's put the placeholder back,
// along with the error.
// Example: {Person.Birthday:x} becomes {Person.Birthday:(Error: "x" is an invalid format specifier)}
message = ("{" + (FormatEx("{0}:(Error: {1})", selector, errorMessage) + "}"));
info.WriteError(message, placeholder);
break;
case ErrorAction.Ignore:
// Allow formatting to continue!
break;
}
}
