Saving from datagrid to sql using C#

foreach(gridrow object in gridview1.rows)
{
//here get the id of control which you use to show data of excel file
//now save this data in string splited by any character
//like
label lbl = (label)findcontrol("id");
string str= lbl.text+"\";
}
//now insert data into database using split the string value
string [] str1=str.split('\');
//now execute insert query
foreach(string s in str1)
{
insert command
}