Detaching an object from Context

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entity-framework

Scenario!
I have loaded a record on screen.
Now i want to delete this record.
Before deleting this record i made a fetch to see wether this record exists in db or not.
If exists then i do the following code.

CookieSubprodContext.DeleteObject(currentProductCategory)
intRowsAffected = CookieSubprodContext.SaveChanges()
ProductCategoryList.Remove(currentProductCategory)
currentProductCategoryIndex = ProductCategoryList.Count - 1
PopulateFields()
MsgBox("Record deleted")

and if this record does not exists in db i am doing this!

CookieSubprodContext.Detach(currentProductCategory)
ProductCategoryList.Remove(currentProductCategory)
currentProductCategoryIndex = ProductCategoryList.Count - 1
PopulateFields()

Just want to know is my approach is OK! if not then what is the best resolution for this!