Execute non Query is used to execute more than one command 
at the time (it is used for insert ,delete ,update)

this method is invoked whenever DMLcommands has 
beenexcecuted

it returns the no. of queries executed successfully

Execute Non Query(),is for insert,delete and update...
i.e for the statements which does'nt returns any value after
the execution.

Execute NOn Query

Execute Non uery is used to perform catalog operations(i.e. 
creating databse objcts such as tables) or to change the 
data in database  without using a dataset by executing 
update, Insert and Delete operations.

it returns no of records updated and will be used for inert,
delete and updated operations

This method belongs to connection object.We call this 
method to indicate that the stored procedure doesn't return 
results for a query but rather than an integer indicating 
how many rows are effected by the executed statement.

EXECUTE NON QUERY IS COMMAND OBJECT METHOD USED TO 
INSRET,DELETE,UPADTE DATA INTO A DATABASE

Execute Non Query(),is for insert,delete and update...
i.e for the statements which does'nt returns any value after
the execution.

Executes a Transact-SQL statement against the connection and
returns the number of rows affected.

update Request.QueryString aslo Execute non query