Sub AddDriverCategory(connection,driver,categoryName)

	Dim categories
	Dim category
	Dim driverCategoryID
	Dim categoryID
	Dim results
	Dim existingCategory
  
	' Find the category that matches the supplied category name.
	Set results = _
	connection.ExecQuery("SELECT * From SMS_CategoryInstance WHERE LocalizedCategoryInstanceName = '" _
	+ categoryName+ "'")
	
	' If the category was found, add it to the driver.
	For Each category in results

		If IsNull(driver.CategoryInstance_UniqueIDs) or UBound (driver.CategoryInstance_UniqueIDs) = -1 Then
			' It is empty. Add the category.
			driver.CategoryInstance_UniqueIDs =  Array(category.CategoryInstance_UniqueID)
		 Else
		
			' Determine if the category is already applied to the driver.
			For each existingCategory in driver.CategoryInstance_UniqueIDs 
				if existingCategory = category.CategoryInstance_UniqueID Then
					WScript.Echo "Already added"
					Exit Sub
				End If
			Next
		
			' Add the category.
			categories = driver.CategoryInstance_UniqueIDs
			Redim Preserve categories (UBound (driver.CategoryInstance_UniqueIDs)+1)
			categories (Ubound (categories)) =  category.CategoryInstance_UniqueID 
			driver.CategoryInstance_UniqueIDs = categories
		End If

		driver.Put_	 
	Next
End Sub

public void AddDriverCategory(
	WqlConnectionManager connection,
	IResultObject driver,
	string categoryName)
{
	try
	{
		// Get the category.
		IResultObject results = connection.QueryProcessor.ExecuteQuery(
		"SELECT * From SMS_CategoryInstance WHERE LocalizedCategoryInstanceName = '" + categoryName + "'");

	 ArrayList driverCategories = new ArrayList(driver["CategoryInstance_UniqueIDs"].StringArrayValue);//;driverCategories);

		foreach (IResultObject category in results)
		{
			foreach (string driverCategory in driverCategories)
			{
				// Do nothing if the driver already has the category.
				if (driverCategory == category["CategoryInstance_UniqueID"].StringValue)
				{
					Console.WriteLine("Already exists");
					return;
			}
		 }

			// Add the category to the action.
		 driverCategories.Add(category["CategoryInstance_UniqueID"].StringValue);
	}

		// Update the driver.
		driver["CategoryInstance_UniqueIDs"].StringArrayValue = (string[])driverCategories.ToArray(typeof(string));
		driver.Put();

}
	catch (SmsException e)
	{
		Console.WriteLine("Failed to add the category" + e.Message);
		throw;
}
}