มันไม่ค้นหาข้อมูลให้ครับ แก้ยังงัยดี รบกวนอีกแล้วว MySQL, VB.NET

Private Sub BtnSeachCus_Click(sender As System.Object, e As System.EventArgs) Handles BtnSeachCus.Click
        Dim sqlQuery As String = "SELECT * FROM customer WHERE customerID = '" & txtIdCus.Text & "' "
        sqlQuery += txtIdCus.Text()
        MsgBox(sqlQuery)
        Dim sqlAdapter As New MySqlDataAdapter
        Dim sqlCmd As New MySqlCommand
        Dim sqlTable As New DataTable
        Dim i As Integer

        With sqlCmd
            .CommandText = sqlQuery
            .Connection = con
        End With

        With sqlAdapter
            .SelectCommand = sqlCmd
            .Fill(sqlTable)
        End With

        For i = 0 To sqlTable.Rows.Count - 1

            DataGridView1.Rows.Add(sqlTable.Rows(i)("CustomerID"), (sqlTable.Rows(i)("CustomerName")), (sqlTable.Rows(i)("Sex")),
            (sqlTable.Rows(i)("Address")), (sqlTable.Rows(i)("Telephone")))
        Next
    End Sub