各位，要将数据库中指定数据输出到datagrid view中，第x行，y列的内容，下面是代码，求帮忙

Imports System.Data.SqlClient
Public Class Form1
Dim cn As SqlConnection
Dim da As SqlDataAdapter
Dim ds As DataSet

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load

    Dim constr As String = "Data Source =(Local);user=sa;pwd=sa;database=mydb002;"
    cn = New SqlConnection(constr)
    da = New SqlDataAdapter("select title from mytable003 where num='str' ", cn)
    ds = New DataSet()
    cn.Open()
    da.Fill(ds, "mytable003 ")
    DataGridView1.DataSource = ds.Tables(" mytable003")
End Sub

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    Dim str As Integer
    Dim randObj As New Random()
    For i As Integer = 1 To 10
        str = Int(Rnd() * (i + 1))
    Next
    TextBox1.Text = str


End Sub

End Class

datagridview.Rows(行号+1).Cells(列号+1).Value = 你的值