How to find count of records using linq in asp.net?

In this article I will explain how to calculate the count ofthe records using Linq in asp.net. This helped me when I was to show the name when the count is greater than zero. 

 var count = (from row in mTags where row.TagId == TagId select row).Count();

                    if (count > 0)

                    {

                     // write your statement here

                    }