private Exception ValidateHelper(HttpContext context) {
if (!_validateInputCalled) {
_validateInputCalled = true;
try {
context.Request.ValidateInputIfRequiredByConfig();
}
catch(Exception e) {
return e;
}
}
if (!_validatePathCalled) {
_validatePathCalled = true;
try {
context.ValidatePath();
}
catch(Exception e) {
return e;
}
}
return null;
}
