Loop through gridview

Question

Hello,

I am developing an online application. I am stuck at looping through gridview. Thing is that I would like to insert multiple rows into the database from gridview by a single button click. I can insert one selected row but I am failed to execute insertion query for multiple selected rows. My question is how to loop through gridview and ultimately, insert selected rows at a time.

I am new at asp.net development....if anyone could help me, that will be great...

Regards,

Rowshan