/// <summary>
/// This method validates model objects that use the Validation attribute class and provides formatting where a format string attribute was supplied.
/// </summary>
/// <returns>List of error strings</returns>
private List <string> Validate()
{
List <string> _errors = new List <string>();
PropertyInfo[] properties = this.GetType().GetProperties();
foreach (PropertyInfo propertyInfo in properties)
{
string value = string.Empty;
List <string> errors = null;
IEnumerable <ValidationAttributes> attributes = (IEnumerable <ValidationAttributes>)propertyInfo.GetCustomAttributes(typeof(ValidationAttributes));
if (attributes.Count() > 0)
{
ValidationAttributes attribute = (ValidationAttributes)attributes.First();
if (!attribute.IsNull())
{
//get the data type
ValidationAttributes.DataType fieldFormat = attribute.FieldFormat;
//call the appropriate validation method
try
{
if (fieldFormat == ValidationAttributes.DataType.Numeric)
{
errors = NumericValidator(attribute, propertyInfo);
}
else if (fieldFormat == ValidationAttributes.DataType.Alphanumeric)
{
errors = AlphaNumericValidator(attribute, propertyInfo);
}
else if (fieldFormat == ValidationAttributes.DataType.DateTime)
{
errors = DateTimeValidator(attribute, propertyInfo);
}
else if (fieldFormat == ValidationAttributes.DataType.List)
{
errors = ListValidator(attribute, propertyInfo);
}
else if (fieldFormat == ValidationAttributes.DataType.Dictionary)
{
errors = DictionaryValidator(attribute, propertyInfo);
}
else if (fieldFormat == ValidationAttributes.DataType.Object)
{
errors = ObjectValidator(attribute, propertyInfo);
}
if (!errors.IsNull())
{
foreach (string error in errors)
{
_errors.Add(error);
}
errors.Clear();
errors = null;
}
}
catch (Exception ex)
{
throw new Exception($"{propertyInfo.Name }: { ex.Message}");
}
}
}
}
return(_errors.Count == 0 ? null : _errors);
}
