SQL-строку не согласиться со списком выбранного текста

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<pre> Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
        Dim ConnectionString As String
        Dim binding As New BindingSource
        
        ConnectionString = ("Integrated Security = true;Initial catalog = " & ComboBox2.SelectedText.ToString & ";Data Source = " & ComboBox1.SelectedText & "; ")
        Dim SQL As String = "SELECT * FROM Table_1"
        Dim conn As SqlConnection = New SqlConnection(ConnectionString)

        ' open the connection


        'Create a SqlDataAdapter object
        Dim adapter1 As SqlDataAdapter = New SqlDataAdapter(SQL, conn)

        ' Call DataAdapter's Fill method to fill data from the
        ' Data Adapter to the DataSet
        Dim ds As New DataSet
        'ds.Tables.Add("Table_1")
        conn.Open()
        adapter1.Fill(ds, "Table_1")
        conn.Close()
        binding.DataSource = ds
        binding.DataMember = "Table_1"
        DataGridView1.DataSource = binding

    End Sub

приведенный выше код не работает ошибка :дополнительная информация: недопустимое имя объекта "Table_1". когда я набираю начальный каталог вот так

pre>Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
        Dim ConnectionString As String
        Dim binding As New BindingSource
        ConnectionString = ("Integrated Security = true;Initial catalog = logistiki;Data Source = " & ComboBox1.SelectedText & "; ")
        Dim SQL As String = "SELECT * FROM Table_1"
        Dim conn As SqlConnection = New SqlConnection(ConnectionString)

        ' open the connection


        'Create a SqlDataAdapter object
        Dim adapter1 As SqlDataAdapter = New SqlDataAdapter(SQL, conn)

        ' Call DataAdapter's Fill method to fill data from the
        ' Data Adapter to the DataSet
        Dim ds As New DataSet
        'ds.Tables.Add("Table_1")
        conn.Open()
        adapter1.Fill(ds, "Table_1")
        conn.Close()
        binding.DataSource = ds
        binding.DataMember = "Table_1"
        DataGridView1.DataSource = binding

    End Sub

он работает он принимает выделенный текст combobox1 но не combobox2

кто-нибудь поможет?

Что я уже пробовал:

добавлена переменная для выделенного текста combox2 в строку sql, но она тоже не работает

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