Please Help! error: Cannot create a child list for field myData

[CloudDust]

i've been trying to run this code but this error always pops up!
here's my line of code

Dim myData As New DataSet
        Dim conn As New MySqlConnection
        Dim cmd As New MySqlCommand
        Dim myAdapter As New MySqlDataAdapter
 
        DataGrid1.DataSource = myData
 
        conn.ConnectionString = "server=localhost; uid=root; database=test"
        Try
            conn.Open()
            cmd.CommandText = "SELECT * from user"
            cmd.Connection = conn
            myAdapter.SelectCommand = cmd
            myAdapter.Fill(myData)
            DataGrid1.DataMember = "myData.Tables(0)"
        Catch ex As Exception
            MessageBox.Show(ex.Message, "Report could not be created", MessageBoxButtons.OK)
        End Try