I faced some problem with crystal report report not make filter on data and return all row

down the code

Dim rpt As New ReportDocument
        Dim fileName As String = Server.MapPath("entdab_dakhli.rpt")
         rpt.Load(fileName)



         'Dim col As New EntedabMonyCollection
        Dim selectFilter As New PredicateExpression
         ' Dim sorter As SortExpression
         Dim ahwalid As New TextBox
         ahwalid.Text = 1
         Dim IPredicateExpression = New PredicateExpression()
         If Not [String].IsNullOrEmpty(ahwalid.Text) Then
             selectFilter.AddWithAnd(EntedabMonyFields.EntedabType = ahwalid.Text)
         End If
         If Not [String].IsNullOrEmpty(TextBox1.Text) Then
             selectFilter.AddWithAnd(EntedabMonyFields.DeputStart >= TextBox1.Text)
         End If
         If Not [String].IsNullOrEmpty(TextBox2.Text) Then
             selectFilter.AddWithAnd(EntedabMonyFields.DeputEnd <= TextBox2.Text)
         End If
        
                Dim ds As New DataSet
        ds.Tables.Clear()


Ds.Tables.Add(LLBLGenProDataSource1.EntityCollection.GetMulti(selectFilter))
         CrystalReportViewer1.ReportSource = rpt

your code has parameters which are equal to our type names, please don't do that: Dim IPredicateExpression = New PredicateExpression()

change the typename of IPredicateExpression

also, place a breakpoint in the code at the GetMulti call and check if the selectFilter indeed is set to a filter, if the predicate expression indeed has predicates. If not, you should step through the code above it with the if statements to see if you add predicates to selectFilter or not.