Get value from gridView

Hi,

In this example I get:  
protected void btnADD_Click(object sender, EventArgs e) { string str = ""; for (int i = 0; i < gvTranferRows.Rows.Count; i++) str = str + gvTranferRows.Rows[i].Cells[0].Text + " >> " + gvTranferRows.Rows[i].Cells[1].Text + " >> " + gvTranferRows.Rows[i].Cells[2].Text + "<br/>"; ltrlText.Text = str; }
01 >> Africa >> 1111
02 >> Asia>> 2222  
03 >> Europa >> 3333  

How get:
string Id= Rows[i]  Cells[0].Text
string Continent= Rows[i]  Cells[1].Text
string Num= Rows[i]  Cells[2].Text
After fi ...