There's few ways to achieve that. See:
DataGridViewRowCollection.Add Method (System.Windows.Forms) | Microsoft Docs[
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Private Sub btnAddTask_Click(sender As Object, e As EventArgs) Handles btnAddTask.Click
Dim dgvrow As Object() = New Object(){Nothing, txtTaskName.Text, txtTaskTag1.Text, txtTaskTag2.Text, cmbPriority.SelectedItem.ToString(), dateDUE.Value, txtLink.Text, txtNoteEntry.Text}
dataGVGeneral.Rows.Add(dgvRow)
End Sub