[Vb.net]updating database using datagridview

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VB

HELLO ALL,
am newbie in vb.net. i use visual studio 2017 and sqlserver 2008
i have a datagridview that has been filled from a database using combobox as filter.
now i want to update my database by adding or deleting data in mydatagridview using a button named edit
please help me :'(

What I have tried:

*****here the code that i have used to fill my datagridviw


<pre>Private Sub ComboBox3_SelectedvalueChanged(sender As Object, e As EventArgs) Handles ComboBox3.SelectedValueChanged
        'filling datagridview using cmbbx 3'
        Cn.Open()
        rq = "select * from [cutting software].dbo.vehicule"
        rq1 = "select * from [cutting software].dbo.tissu"
        rq2 = "select* from [cutting software].dbo.projet"
        rq3 = "select * from [cutting software].dbo.kit_cover"
        rq4 = "select * from [cutting software].dbo.[Plan de coupe]"
        cmd = New SqlCommand(rq, Cn)
        da = New SqlDataAdapter(cmd)
        Dim cmd1 As New SqlCommand(rq1, Cn)
        da1 = New SqlDataAdapter(cmd1)
        Dim cmd2 As New SqlCommand(rq2, Cn)
        da2 = New SqlDataAdapter(cmd2)
        Dim cmd3 As New SqlCommand(rq3, Cn)
        da3 = New SqlDataAdapter(cmd3)
        Dim cmd4 As New SqlCommand(rq4, Cn)
        da4 = New SqlDataAdapter(cmd4)
        Cn.Close()
        If ComboBox3.SelectedItem = "vehicule" Then
            ds = New DataSet
            dt = New DataTable
            da.Fill(dt)
            da.Fill(ds, "vehicule")
            DataGridView1.DataSource = dt
            dt = ds.Tables("vehicule")
        ElseIf ComboBox3.SelectedItem = "tissu" Then
            dt1 = New DataTable
            da1.Fill(dt1)
            DataGridView1.DataSource = dt1
            dt1 = ds.Tables("tissu")
        ElseIf ComboBox3.SelectedItem = "projet" Then
            dt2 = New DataTable
            da2.Fill(dt2)
            DataGridView1.DataSource = dt2
            dt2 = ds.Tables("projet")
        ElseIf ComboBox3.SelectedItem = "kit_cover" Then
            dt3 = New DataTable
            da3.Fill(dt3)
            DataGridView1.DataSource = dt3
            dt3 = ds.Tables("kit_cover")
        ElseIf ComboBox3.SelectedItem = "plan coupe" Then
            dt4 = New DataTable
            da4.Fill(dt4)
            DataGridView1.DataSource = dt4
            dt4 = ds.Tables("Plan de coupe")
        End If
    End Sub
    Private Sub edit_Click(sender As Object, e As EventArgs) Handles edit.Click
        Cn.Open()
        cmdb = New SqlCommandBuilder(da)
        da.Update(ds, "vehicule")
        Cn.Close()
    End Sub

**** here the code that i have used to update the database

Private Sub edit_Click(sender As Object, e As EventArgs) Handles edit.Click
        If ComboBox3.SelectedItem = "vehicule" Then
            Cn.Open()
            cmdb = New SqlCommandBuilder(da)
            da.Update(ds, "vehicule")
            Cn.Close()
        ElseIf ComboBox3.SelectedItem = "tissu" Then
            Cn.Open()
            cmdb = New SqlCommandBuilder(da1)
            da1.Update(ds, "tissu")
            Cn.Close()
        ElseIf ComboBox3.SelectedItem = "projet" Then
            Cn.Open()
            cmdb = New SqlCommandBuilder(da2)
            da2.Update(ds, "projet")
            Cn.Close()
        ElseIf ComboBox3.SelectedItem = "kit_cover" Then
            Cn.Open()
            cmdb = New SqlCommandBuilder(da3)
            da3.Update(ds, "kit_cover")
            Cn.Close()
        ElseIf ComboBox3.SelectedItem = "plan coupe" Then
            Cn.Open()
            cmdb = New SqlCommandBuilder(da4)
            da4.Update(ds, "plan de coupe")
            Cn.Close()
        End If
    End Sub

*** the first code works but for the second it show me :

System.InvalidOperationException: 'Update unable to find TableMapping['vehicule'] or DataTable 'vehicule'.'