Update command only updates first row vb.net - database

Question

I'm trying to update a database through a datagridview but the problem I'm having is that it only updates the first row in the datagridview. Any insight will be grateful, thanks.
Dim Connection As New OleDbConnection(Get_Constring)
Dim dt As DataTable = New DataTable("SendTable")
Dim row As DataRow
dt.Columns.Add("ID", Type.GetType("System.Int32"))
dt.Columns.Add("Attendance", Type.GetType("System.String"))
For i = 0 To ClassRegisterdgv.Rows.Count - 1
' If ClassRegisterdgv.Rows(i).Cells(4).Value.Equals("") Then ClassRegisterdgv.Rows(i).Cells(4).Value.Equals("Present")
Dim ID As Integer = ClassRegisterdgv.Rows(i).Cells(0).Value
Dim Attendance As String = ClassRegisterdgv.Rows(i).Cells(4).Value
row = dt.Rows.Add
row.Item("ID") = ID
row.Item("Attendance") = Attendance
Next
If Connection.State = ConnectionState.Closed Then
Connection.Open()
End If
Dim sqlquery As String = "UPDATE PupilInfo SET " & NewColumnCreated & " = #Attendance WHERE ID = #ID"
Dim sqlcommand As New OleDbCommand
For Each newrow As DataRow In dt.Rows
'For i = 0 To ClassRegisterdgv.Rows.Count - 1
With sqlcommand
.CommandText = sqlquery
.Parameters.AddWithValue("#Attendance", newrow.Item(1))
.Parameters.AddWithValue("#ID", newrow.Item(0))
.Connection = Connection
MessageBox.Show(newrow.Item(1) & newrow.Item(0))
.ExecuteNonQuery()
End With
Next
Connection.Close()
ClassRegisterdgv.DataSource = Nothing
dt.Clear()

Answer 1

Only updates the first row because the parameters collection of the command object has not been cleaned. Try to do the following:
With sqlcommand
.CommandText = sqlquery
.Parameters.Clear() '<─────── Insert this line in your code.
.Parameters.AddWithValue("#Attendance", newrow.Item(1))
.Parameters.AddWithValue("#ID", newrow.Item(0))
.Connection = Connection
MessageBox.Show(newrow.Item(1) & newrow.Item(0))
.ExecuteNonQuery()
End With