Data Controls :: Mark Attendance Of Students (Present Or Absent) In Database Using GridView

In my website there is 1 module in which i m fetching data(Student name, Roll no.) of students from the student master table into gridview... and in that gridview there is 1 checkbox column...

I want that when i will check the checkbox of those students who are present...dat checked students and name should be get entered into another table in database where there wil be present written in front of checked students and absent written in front of unchecked students.....

I tried a lot but I am not getting it.....

From the above table(student info) i wil fetch data in gridview and will mark attendance in the gridview

In the above sample gridview in the student name column the name of the students is fetched from student info table, when I will check the checkbox and select the date and click on the button the students who are checked will be stored with a status present and those who are unchecked are stored as absent in  another table

The following is the table(example) is  where the data is to be stored in the same manner. It means that total two tables are there in the database.

From 1 table i fetch data of students info in gridview and in another table i wil save the attendance marked in gridview....