How to get the data in mydatatable using datagridview(virtual)?

Dim _data As New DataGridView
        Dim MyDataTable As New DataTable
        Dim strQuery As String = Application.StartupPath & "\strquery.txt"

        If System.IO.File.Exists(strQuery) = True Then
            Dim objReader As New System.IO.StreamReader(strQuery)
            strQuery = objReader.ReadToEnd
        Else
            MsgBox("OR Sql Query file does not exists!", MsgBoxStyle.Information, "Security Information")
            Exit Sub
        End If
        Dim MySqlCommand As SqlCommand = New SqlCommand(strQuery)
        Call conn()

        MySqlCommand.CommandType = CommandType.Text
        MySqlCommand.Connection = MySqlConnection

        Dim MySqlDataAdapter As SqlDataAdapter = New SqlDataAdapter
        MySqlDataAdapter.SelectCommand = MySqlCommand

        Try
            MySqlConnection.Open()
            MySqlDataAdapter.SelectCommand = MySqlCommand
            MySqlDataAdapter.Fill(MyDataTable)
            _data.DataSource = MyDataTable


        Catch ex As Exception
            MessageBox.Show(ex.Message)
        Finally
            MySqlConnection.Close()
            MySqlConnection.Dispose()
            MySqlDataAdapter.Dispose()
        End Try