Why in the Crystal Report Print Button does not work? Is it because the use Page.IsPostBack?

Hi Experts,,

ToReportInASP.Net, I am using SAPCrystalReport. Whythe Printbutton on theToolbardoes not work?so I can notprint reportsthatshow.

Is it becausein the SubPage_Load I use thecommand"If NotPage.IsPostBackThen"

If Ido notuse, If NotPage.IsPostBack Then, latercode thatinsideSub Page_Load(senderAs Object, eAsEventArgs) will be executedrepeatedly. So Istopped it.so justexecutedonce, when WebFormis loaded atfirst.

For more details, belowIshow thesourcecodethat I use.

Sub Page_Load(sender As Object, e As EventArgs)
            
         If Not Page.IsPostBack Then
           
             Try
                 myConnection = New MySqlConnection(".....;")
           cmd.CommandText = "insert into table1(...) select ... from tbtemp where KodeKantorCabang='" & Session("KodeKantorCabang") & "'"
                 cmd.CommandType = CommandType.Text
                
                 cmd.Connection = myConnection
                 myConnection.Open()
                 cmd.ExecuteNonQuery()
                
                 strSql = "select ... from tbtemp WHERE KodeKantorCabang='" & Session("KodeKantorCabang") & "'"
        
                 myDataAdapter = New MySqlDataAdapter(strSql, myConnection)
                 myDataAdapter.Fill(dsK, "DTKwitansi")
                 If dsK.Tables("DTKwitansi").Rows.Count > 0 Then
                     rpt = New crKwitansi
                     rpt.SetDataSource(dsK)
            
                     Dim crPFDs As ParameterFieldDefinitions
                     Dim crPFD As ParameterFieldDefinition
                     Dim crPVs As New ParameterValues
                     Dim crPDV As New ParameterDiscreteValue

                     crPDV.Value = Session("NamaUser").ToString
        
        
                     crPFDs = rpt.DataDefinition.ParameterFields
                     crPFD = crPFDs.Item("pNamaUser")
                     crPVs.Clear()
                     crPVs.Add(crPDV)
                     crPFD.ApplyCurrentValues(crPVs)
                        
                     CrystalReportViewer1.ReportSource = rpt
                     cmd.CommandText = "delete from tbtemp where KodeKantorCabang='" & Session("KodeKantorCabang") & "'"
                
                     cmd.CommandType = CommandType.Text
                     cmd.Connection = myConnection
                     cmd.ExecuteNonQuery()
          
                     myConnection.Close()
            
                 End If
                
             Catch ex As MySqlException
                 Response.Write("My Sql Exception: " & ex.Message)
          
                
             End Try
               
         End If
      
     End Sub