how Insert data in table using data datagridview

Question

hiii friends

 

project spacification

- windows form application in c#

- sql database (service based)

 example-

i have datagridview  with checkbox  and one DELETE button in my project . and i have 2 table in my database.  table1 and table2 both of table have same number of column and same datatype.

 

in datagridview i'm displaying the  data of table1.   i want to perform a DELETE operation and after deleting that data from table1 it  should be moved in table2 abd have have to be delete from its origion table1.

 

i have created it but what happening after if i'm selecting 3 rows ... 1st row moving in table1 to table2 but after that another

2rows are not moved in table2.  

 

i'have attached my code below.