How to get task item url for emailing out

Question

I want to be able to send an email out from my VS workflow with the url of the task. In my task method invoking I have the following code:

private void InformCust_MethodInvoking(object sender, EventArgs e)
{
    Inform_TaskId1 = Guid.NewGuid();
    Inform_TaskProperties1.Title = "cooking time" + workflowProperties.Item.Title;
    Inform_TaskProperties1.Description = "Inform customer  - ";

    Inform_TaskProperties1.ExtendedProperties["ItemId"] = workflowProperties.Item.ID;
    Inform_TaskProperties1.ExtendedProperties["ItemListId"] = workflowProperties.Item.ParentList.ID;
}