crystal report printing error null values displaying

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when i tried to print a bill using crystal report it showing null values .it mean displaying only column names .i am using this printing for windows form VB 2010.

i connected my database items.mdb through ADO.net and then then i select columns

called Item_No,Item_Name,Qty,Price,Total,Grand_Total. when i press on print button in form 2 it is displaying only Item_No,Item_Name,Qty,Price,Total,Grand_Total feilds only and not displaying their values

for print button i used this code

Imports CrystalDecisions.CrystalReports.Engine

Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim cryRpt As New ReportDocument
        cryRpt.Load("D:\New folder\Visual Studio 2010\Projects\WindowsApplication2\WindowsApplication2\CrystalReport1.rpt")
        CrystalReportViewer1.ReportSource = cryRpt
        CrystalReportViewer1.Refresh()
    End Sub
End Class

where is the error please kindly tell me. if you found any further details which are required to answer this question please comment. thanks to all in advance