[Solved] ASP.Net RDLC Error: A data source instance has not been supplied for the data source DataSet1

Please help i wanted to display all this in one RDLC report header (school) and the rest in the details view.

whe i run it it shows error A data source instance has not been supplied for the data source 'DataSet1'.

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    CategoryReport.Text = Request.QueryString("CategoryReport")
    If Not Me.IsPostBack Then
        If CategoryReport.Text = "Finance" Then
            ReportViewer1.ProcessingMode = ProcessingMode.Local
            ReportViewer1.LocalReport.ReportPath = Server.MapPath("~/Reports/Sumsummary.rdlc")
            Dim dsCustomers As SumsmaryDataset = GetData("select class,total from Sumsummary")
            Dim datasource As New ReportDataSource("Customers", dsCustomers.Tables(0))
 
            Dim dsCustomerst As SchoolDetailsdataset = GetDataschool("select school,box,telephone,email from Schools")
            Dim datasource2 As New ReportDataSource("SchoolDetailsdataset", dsCustomerst.Tables(0))
 
            ReportViewer1.LocalReport.DataSources.Clear()
            ReportViewer1.LocalReport.DataSources.Add(datasource)
            ReportViewer1.LocalReport.DataSources.Add(datasource2)
 
            'ReportViewer1.LocalReport.DataSources.Add(New Microsoft.Reporting.WebForms.ReportDataSource("SchoolDetailsdataset", dsCustomerst))
 
        Else
            BindReport()
        End If
 
        'ReportViewer1.LocalReport.Refresh()
    End If
End Sub