how to save data when data on the form which is selected in checked box list & gridview in the controlform? ...

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C#

my project in c# .net .
in this i created one control form ,in this form i have grid view.when i click add button,another form is opened .on this form there is checked box list .on this checked value stored in one array.but that array's data how to send on grid-view of that control???????
in this data collected from one database & saved in another database threw grid-view...
so how to i save in another database ????????