using checkbox in datagridview

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C#

Run mode as follows in datagridview ;


Date(colname) Session(colname)
AM PM
1 2 3 4

1/2/2013 four checkboxes(for 4 session i use 4 checkboxes)

in the run mode i enter the date for 1/2/2013 date for that date i choose session 2 in checkbox. and click save button


In Database i want the output as follows;


Date Session
1/2/2013 1 AM

for that how can i do using csharp?

Please help me.

Regards,
narasiman P.