Delete row through condtion in grid view?

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C#

I have a Grid view,there are multiple columns in grid view.In Grid View one of my Column is "Status". In Status column we are showing three type like
Shipped,Cancel.Status is not any column in database.On the behalf of some condition
we are showing this filed.

There is a drop down list out side of grid view.There are three texts in drop down
Shipped,Cancel.Status.
So we want filtering from the drop down what we select in drop down those records
should be show.Status is not any column of database so we want filtering with the help of Gridview.And Status is binding in Rowdatabound event.