Check out example codes for "vb.net add row to datagridview programmatically". It will help you in understanding the concepts better.

Code Example 1

Private Sub SurroundingSub()
    Dim rowId As Integer = dataGridView1.Rows.Add()
    Dim row As DataGridViewRow = dataGridView1.Rows(rowId)
    row.Cells("Column1").Value = "Value1"
    row.Cells("Column2").Value = "Value2"
End Sub

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