public object ConvertBack(object obj, Type targetType, object parameter, out ValidationResult validationResult)
{
validationResult = ValidationResult.ValidResult;
string s = (string)obj;
if (null != _parent)
{
_parent.SetValue(ValueStringPropertyKey, s); // we set the value string property to have the actual text value as a property
s = s.Trim();
if (!string.IsNullOrEmpty(_parent.MinimumReplacementText) && _parent.MinimumReplacementText.Trim() == s)
{
return(_parent.Minimum);
}
else if (!string.IsNullOrEmpty(_parent.MaximumReplacementText) && _parent.MaximumReplacementText.Trim() == s)
{
return(_parent.Maximum);
}
else if (string.IsNullOrEmpty(s) && null != _parent.ValueIfTextIsEmpty)
{
return(_parent.ValueIfTextIsEmpty);
}
}
if (int.TryParse(s, NumberStyles.Integer, _conversionCulture, out var result))
{
return(result);
}
else
{
validationResult = new ValidationResult(false, string.Format("The provided string could not be converted to an integer value!"));
return(System.Windows.Data.Binding.DoNothing);
}
}
