I am not getting print button in CRViewer

here is my code
Dim str As String = ConfigurationSettings.AppSettings("connectioninfo")
Dim con As New OdbcConnection(str)
Dim rpt As purchaserequisition = New purchaserequisition()
con.Open()
Dim sql As String
sql = "select * from pr_middle where pr_no='" & Session("prreport") & "'"
Dim da As New OdbcDataAdapter(sql, con)
Dim ds As DataSet = New DataSet()
da.Fill(ds)
rpt.SetDataSource(ds.Tables(0))
crv.ReportSource = rpt


I am able to view crystal report but I am not getting print button in crviewer. i am using .Net 1.0 framework