A data source instance has not been supplied for the data source“Product_Detail” in Microsoft reporting service

Question

I`m trying to display record in a Report. Data is in the Dataset. but it is not binind to them. When forms load it shows it report layout. But when i click on the button it show

Answer 1

Imports Microsoft.Reporting.WebForms

Partial Class Rpt_reports
Inherits System.Web.UI.Page

  Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
    If Not IsPostBack Then
        Dim ds As New Custamer
        'da.Fill(ds.Tables("custamer")
        Dim path As String = Server.MapPath("customerinfo.rdlc")

        ReportViewer1.LocalReport.DataSources.Clear()
        ReportViewer1.LocalReport.ReportPath = path
        ReportViewer1.LocalReport.DataSources.Add(New Microsoft.Reporting.WebForms.ReportDataSource("Rpt_reports", ds.Tables("Custamer")))
        ReportViewer1.LocalReport.Refresh()
    End If
  End Sub

  'Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

  'End Sub

End Class