Instance Validation
BizTalk Editor invokes the IInstanceValidator.ValidateInstance method of an extension when the following conditions are met:
The extension is set as standard by using the Standard property of the Schema node.
On the Property Pages dialog box associated with the schema, the Generate Instance Output Type property is set to Native.
On the Property Pages dialog box associated with the schema, the Input Instance Filename property is set to the name of a file containing the instance message to be validated.
The file specified in the Input Instance Filename property is passed as a parameter to the IInstanceValidator.ValidateInstance method.
If errors occur, error messages are returned as an array of IValidationInfo objects, and are displayed in the Visual Studio Task List window.
Note
If the schema contains pattern statements, and the file passed to the ValidateInstance method was generated by using the corresponding Generate Instance command, the instance message may not pass validation.