private bool ValidForContainsOperation(Func <string, TestProperty> propertyProvider)
{
bool valid = true;
// It is OK for propertyProvider to be null, no syntax check will happen.
// Check validity of operator only if related TestProperty is non-null.
// if null, it might be custom validation ignore it.
if (null != propertyProvider)
{
TestProperty testProperty = propertyProvider(Name);
if (null != testProperty)
{
Type propertyType = testProperty.GetValueType();
valid = typeof(string) == propertyType ||
typeof(string[]) == propertyType;
}
}
return(valid);
}