/// <summary>
/// Receives notification of a validation error.
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void ValidationHandler(object sender, ValidationEventArgs args)
{
//store the validation error message and set result flag
if (args.Severity == XmlSeverityType.Warning)
{
AddToArrayList(ref m_warnings, args.Message);
if (m_result == ValidatorResultType.Valid)
{
m_result = ValidatorResultType.ValidWithWarnings;
}
}
else
{
AddToArrayList(ref m_errors, args.Message);
m_result = ValidatorResultType.InValid;
}
}
/// <summary>
/// Receives notification of a validation error.
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void ValidationHandler(object sender, ValidationEventArgs args)
{
//store the validation error message and set result flag
if (args.Severity == XmlSeverityType.Warning)
{
AddToArrayList(ref m_warnings, args.Message);
if (m_result == ValidatorResultType.Valid)
m_result = ValidatorResultType.ValidWithWarnings;
}
else
{
AddToArrayList(ref m_errors, args.Message);
m_result = ValidatorResultType.InValid;
}
}
/// <summary>
/// Validates XML against a schema.
/// </summary>
/// <param name="xml">XML to validate.</param>
/// <param name="shortCircuit">
/// Defines validation behaviour should invalid XML be encountered. Setting to a type other than None
/// forces the validation process to immedietely quit according to the type of problem encountered.
/// </param>
/// <returns>Result as ValidatorResultType. Extra information can be extracted from Warnings and Errors properties.</returns>
/// <overloaded/>
public ValidatorResultType Validate(string xml, ValidatorShortCircuitType shortCircuit)
{
// NB overloaded
//validate arguments
if (xml == null)
throw new ArgumentNullException("xml");
else if (xml.Length == 0)
throw new ArgumentOutOfRangeException("xml");
//initialise variables
m_warnings = null;
m_errors = null;
m_result = ValidatorResultType.Valid;
try
{
//load the xml into validating reader
XmlValidatingReader xmlValidatingReader = null;
//configure validating reader and schema(s) according to schema type
if (m_validationType == ValidationType.Schema)
{
//if the XSD schema collection is not yet prepared, do so now
if (!m_isSchemaCollectionPrepared)
{
//prepare the additional resources resolver with all of the extra XSD's
PrepareResourceResolver();
//load main XSD into schemas collection
m_schemas = new XmlSchemaCollection();
m_schemas.Add(null, GetXmlTextReader(m_schema), m_additionalResourceResolver);
//flag that we have already prepared the schemas to improve
//performance on subsequent validation requests
m_isSchemaCollectionPrepared = true;
}
//create the validating reader and assign schemas
xmlValidatingReader = new XmlValidatingReader(GetXmlTextReader(xml));
xmlValidatingReader.ValidationType = ValidationType.Schema;
xmlValidatingReader.Schemas.Add(m_schemas);
}
else
{
//set up validating reader for DTD
XmlParserContext context = new XmlParserContext(null, null, m_dtdDocTypeName, null, null, m_schema, "", "", XmlSpace.None);
xmlValidatingReader = new XmlValidatingReader(xml, XmlNodeType.Element, context);
xmlValidatingReader.ValidationType = ValidationType.DTD;
xmlValidatingReader.EntityHandling = EntityHandling.ExpandCharEntities;
}
//assign event handler which will receive validation errors
xmlValidatingReader.ValidationEventHandler += new ValidationEventHandler (ValidationHandler);
//read the xml to perform validation
try
{
while (xmlValidatingReader.Read())
{
//check if we need to quit
if (shortCircuit == ValidatorShortCircuitType.OnWarning
&& (m_result == ValidatorResultType.ValidWithWarnings || m_result == ValidatorResultType.InValid))
break;
else if (shortCircuit == ValidatorShortCircuitType.OnError && m_result == ValidatorResultType.InValid)
break;
}
}
catch (Exception exc)
{
//xml form error
AddToArrayList(ref m_errors, exc.Message);
m_result = ValidatorResultType.InValid;
}
return m_result;
}
catch (Exception exc)
{
throw exc;
}
}
/// <summary>
/// Validates XML against a schema.
/// </summary>
/// <param name="xml">XML to validate.</param>
/// <param name="shortCircuit">
/// Defines validation behaviour should invalid XML be encountered. Setting to a type other than None
/// forces the validation process to immedietely quit according to the type of problem encountered.
/// </param>
/// <returns>Result as ValidatorResultType. Extra information can be extracted from Warnings and Errors properties.</returns>
/// <overloaded/>
public ValidatorResultType Validate(string xml, ValidatorShortCircuitType shortCircuit)
{
// NB overloaded
//validate arguments
if (xml == null)
{
throw new ArgumentNullException("xml");
}
else if (xml.Length == 0)
{
throw new ArgumentOutOfRangeException("xml");
}
//initialise variables
m_warnings = null;
m_errors = null;
m_result = ValidatorResultType.Valid;
try
{
//load the xml into validating reader
XmlValidatingReader xmlValidatingReader = null;
//configure validating reader and schema(s) according to schema type
if (m_validationType == ValidationType.Schema)
{
//if the XSD schema collection is not yet prepared, do so now
if (!m_isSchemaCollectionPrepared)
{
//prepare the additional resources resolver with all of the extra XSD's
PrepareResourceResolver();
//load main XSD into schemas collection
m_schemas = new XmlSchemaCollection();
m_schemas.Add(null, GetXmlTextReader(m_schema), m_additionalResourceResolver);
//flag that we have already prepared the schemas to improve
//performance on subsequent validation requests
m_isSchemaCollectionPrepared = true;
}
//create the validating reader and assign schemas
xmlValidatingReader = new XmlValidatingReader(GetXmlTextReader(xml));
xmlValidatingReader.ValidationType = ValidationType.Schema;
xmlValidatingReader.Schemas.Add(m_schemas);
}
else
{
//set up validating reader for DTD
XmlParserContext context = new XmlParserContext(null, null, m_dtdDocTypeName, null, null, m_schema, "", "", XmlSpace.None);
xmlValidatingReader = new XmlValidatingReader(xml, XmlNodeType.Element, context);
xmlValidatingReader.ValidationType = ValidationType.DTD;
xmlValidatingReader.EntityHandling = EntityHandling.ExpandCharEntities;
}
//assign event handler which will receive validation errors
xmlValidatingReader.ValidationEventHandler += new ValidationEventHandler(ValidationHandler);
//read the xml to perform validation
try
{
while (xmlValidatingReader.Read())
{
//check if we need to quit
if (shortCircuit == ValidatorShortCircuitType.OnWarning &&
(m_result == ValidatorResultType.ValidWithWarnings || m_result == ValidatorResultType.InValid))
{
break;
}
else if (shortCircuit == ValidatorShortCircuitType.OnError && m_result == ValidatorResultType.InValid)
{
break;
}
}
}
catch (Exception exc)
{
//xml form error
AddToArrayList(ref m_errors, exc.Message);
m_result = ValidatorResultType.InValid;
}
return(m_result);
}
catch (Exception exc)
{
throw exc;
}
}
