Hi,
Update the datasource table with one more row and bind the gridview.
try this,
dim dt as DataTable = Ctype(gridView1.DataSource, DataTable)
dim dtRow as DataRow = dt.NewRow
dtRow(0) = "Value1"
dtRow(1) = "Value2"
dt.Rows.Add(dtRow)
dt.AcceptChanges()
gridView1.DataSource = dt
grdView1.DataBind()
hope this helps.