我有一个标签表。如何使用LINQ批量插入？

I am using VB.NET with LINQ to MS SQL. I have two following tables. Now I want to insert multiple items in Tags Table using LINQ, but also wants to check that if any of tag exists in Tags table. It doesn't insert it again and bring the TagID in both cases (if inserted or if found existed)I am using VB.NET with LINQ to MS SQL. I have t