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Hierarchy RadGridView Error

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GridView
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Cesar
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Cesar asked on 20 Jan 2012, 09:40 PM
Hello Guys

Im trying to create a simple Hierarchy in a RadGridView, but the RadGridView 
is not making the relation, i mean, as you can see in the attached file,
 even the relation is betweet columns Id_Report of the parent Template,
and Id_Report  of the child template, is not making the match between them.
 Can anyone tell me something about this behaivor pls? 


Dim template As New GridViewTemplate()
template.BeginUpdate()
template.DataSource = Me.oConsulta.Select_DS("56").Tables(0)
grReportsSolicitado.MasterTemplate.Templates.Add(template)
 
Dim relation As New GridViewRelation(grReportsSolicitado.MasterTemplate)
relation.ChildTemplate = template
relation.RelationName = "Id_Report"
relation.ParentColumnNames.Add("Id_Report")
relation.ChildColumnNames.Add("Id_Report")
grReportsSolicitado.Relations.Add(relation)
template.EndUpdate()
Me.grReportsSolicitado.EndUpdate()
Me.grReportsSolicitado.Refresh()


Thanks for you Help

Cesar

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Julian Benkov
Telerik team
answered on 25 Jan 2012, 01:25 PM
Hi Cesar,

I tested the described scenario in RadGridView and I could not observe issues related with the loading operation. Please, could you send me a sample project where the issue can be reproduced. This will allow us to investigate the case in detail and to provide you with further assistance. 

You can find more information about hierarchical binding in RadGridView in our online documentation.

I am looking forward to your reply.
 
All the best,
Julian Benkov
the Telerik team

SP1 of Q3’11 of RadControls for WinForms is available for download (see what's new).

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Cesar
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answered on 25 Jan 2012, 04:41 PM
Hello Julian

Thanks for your answer, i'm attaching you a simple project where you can see the structure applied, and a image with the result, as you will see is not making the relation

thanks for your help


Cesar

Imports Telerik.WinControls.UI
Imports System.ComponentModel
Imports System.Data.SqlClient
 
Public Class Form1
    Public Sql_Con As SqlConnection = New SqlConnection
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        grReportEstandar.AllowAddNewRow = False
        grReportEstandar.AllowColumnReorder = False
        grReportEstandar.AllowDeleteRow = False
        grReportEstandar.ShowFilteringRow = False
        grReportEstandar.ShowGroupedColumns = False
        grReportEstandar.ShowGroupPanel = False
 
 
 
 
        Me.grReportEstandar.DataSource = Me.Select_DS("2").Tables.Item(0)
        Me.grReportEstandar.GroupDescriptors.Add("Nom_Modulo", ListSortDirection.Ascending)
        Me.grReportEstandar.SortDescriptors.Add("Nom_Modulo", ListSortDirection.Ascending)
        'Me.grReportEstandar.Columns.Item("Id_Mod").IsVisible = False
        'Me.grReportEstandar.Columns.Item("Sto_Proc").IsVisible = False
        'Me.grReportEstandar.Columns.Item("Id_Report").IsVisible = False
        'Me.grReportsSolicitado.Columns.Item("CrossTab").IsVisible = False
        Me.grReportEstandar.BestFitColumns()
        Me.grReportEstandar.Columns.Item("Nom_Report").Width = 200
 
        Me.grReportEstandar.Columns.Item("Nom_Report").HeaderText = "Reporte"
        For a As Integer = 0 To grReportEstandar.RowCount - 1
            Me.grReportEstandar.Rows(a).Cells("Nom_Report").ReadOnly = True
        Next
 
 
 
 
        Dim template1 As New GridViewTemplate()
        template1.BeginUpdate()
        template1.AllowAddNewRow = False
        template1.AllowColumnReorder = False
        template1.AllowDeleteRow = False
        template1.ShowFilteringRow = False
        template1.ShowGroupedColumns = False
 
        template1.Columns.Add(New GridViewCheckBoxColumn("Visible"))
        template1.DataSource = Me.Select_DS("1").Tables(0)
        template1.Columns.Item("Name").Width = 200
        template1.Columns.Item("Name").HeaderText = "Campo"
 
 
        grReportEstandar.MasterTemplate.Templates.Add(template1)
 
        Dim relation1 As New GridViewRelation(grReportEstandar.MasterTemplate)
        relation1.ChildTemplate = template1
        relation1.RelationName = "Id_Report"
        relation1.ParentColumnNames.Add("Id_Report")
        relation1.ChildColumnNames.Add("Id_Report")
        grReportEstandar.Relations.Add(relation1)
        template1.EndUpdate()
        Me.grReportEstandar.EndUpdate()
        Me.grReportEstandar.Refresh()
    End Sub
    Public Function Select_DS(ByVal tipo As String) As DataSet
        Dim query As String = ""
        Try
            Me.Sql_Con = Me.Check_Connection("BisynfDW")
 
 
            If (Me.Sql_Con.State = ConnectionState.Open) Then
                Dim str2 As String = tipo
                Select Case str2
                    Case "1"
                        query = "select ModId Id_Mod,   RepId Id_Report, Campo, (select top 1  x.name from otra x where t.campo=x.word )name from   OCAM t"
                    Case "2"
 
                        query = ("select distinct (select x.Nom_Modulo from Omod x where x.id_Modulo=f.Id_Mod)Nom_Modulo, f.Id_Mod, f.Id_Report, f.Nom_Report, f.Sto_Proc " & _
                                    "FROM Orep f " & _
                                    "where  cast(f.Id_Report as nvarchar(2)) + '|' + cast(f.Id_Mod as nvarchar(2)) " & _
                                    " in (  select cast(x.repid as nvarchar(2)) + '|' + cast(x.modid as nvarchar(2))" & _
                                    "                                                                                 from RPPE x" & _
                                    "                                                                             where x.companyid=1) " & _
                                    "order by f.Id_Mod,f.Nom_Report desc")
                End Select
 
                
            End If
            Dim set2 As New DataSet
            Dim adapter As New SqlDataAdapter()
            adapter.SelectCommand = New SqlCommand(query, Sql_Con)
            adapter.Fill(set2)
            Sql_Con.Close()
            Sql_Con.Dispose()
            Return set2
        Catch ex As Exception
            MsgBox("Error: " & ex.Message & " Class: Consultas, Metodo: Select_DS, Consulta: " & query, Nothing)
            Return Nothing
        End Try
    End Function
 
    Public Function Check_Connection(ByVal Bds As String, Optional ByRef Server As String = Nothing, Optional ByRef Usuario As String = Nothing, Optional ByRef Contra As String = Nothing) As SqlConnection
        If (Me.Sql_Con.State = ConnectionState.Closed) Then
            Try
                If String.IsNullOrEmpty(Server) And String.IsNullOrEmpty(Usuario) And String.IsNullOrEmpty(Contra) Then
                    Me.Sql_Con.ConnectionString = String.Concat(New String() {"Data Source=(local);Initial Catalog=BisynfDW;User ID=sa;Password=1234 ;Asynchronous Processing=True;"})
                Else
                    Me.Sql_Con.ConnectionString = String.Concat(New String() {"Data Source=", Server, ";Initial Catalog=", Bds, ";User ID=", Usuario, ";Password=", Contra, " ;Asynchronous Processing=True;"})
                End If
                Me.Sql_Con.Open()
                Return Me.Sql_Con
            Catch exception1 As Exception
                If (exception1.Message = "Error relacionado con la red o especifico de la instancia mientras se establec" & ChrW(237) & "a una conexión con el servidor SQL Server. No se encontr" & ChrW(243) & " el servidor o " & ChrW(233) & "ste no estaba accesible. Compruebe que el nombre de la instancia es correcto y que SQL Server est" & ChrW(225) & " configurado para admitir conexiones remotas. (provider: Proveedor de canalizaciones con nombre, error: 40 - No se pudo abrir una conexi" & ChrW(243) & "n con SQL Server)") Then
                    Interaction.MsgBox("El Servicio de SQL Server se encuentra detenido, Inicie el Servicio y vuelva a intentar.", MsgBoxStyle.Critical, "Conexion SQL Server")
                Else
                    MsgBox("Error: " & exception1.Message & " Class: Consultas, Metodo: Check_Connection ", Nothing)
                End If
                Me.Sql_Con.Close()
                Return Nothing
            End Try
        End If
        Sql_Con.Close()
        Sql_Con.Dispose()
        Dim str2 As String = Bds
        Me.Sql_Con.ConnectionString = String.Concat(New String() {"Data Source=(local);Initial Catalog=BisynfDW;User ID=sa;Password=1234 ;Asynchronous Processing=True;"})
        Me.Sql_Con.Open()
        Return Me.Sql_Con
 
    End Function
End Class
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Julian Benkov
Telerik team
answered on 30 Jan 2012, 02:48 PM
Hi Cesar,

In your case, all settings seem properly configured and everything should work without any issues considering the RadGridView hierarchy mode setup. 

I made a review of your codebase and I think that the issue is related to the name of the key column 'Id_Report'. Please verify the name of the column the 'Id_Report' in the second DataTable used as a DataSource for the child GridViewTemplate. To test your data and sql queries, you can add a DataTable '1' and '2' to one DataSet and create a DataRelation between them:
Private Sub CreateRelation()
    ' Get the DataColumn objects from two DataTable objects
    ' in a DataSet. Code to get the DataSet not shown here.
    Dim parentColumn As DataColumn = _
        DataSet1.Tables("Customers").Columns("CustID")
    Dim childColumn As DataColumn = DataSet1.Tables( _
        "Orders").Columns("CustID")
 
    ' Create DataRelation.
    Dim relCustOrder As DataRelation
    relCustOrder = New DataRelation( _
        "CustomersOrders", parentColumn, childColumn)
 
    ' Add the relation to the DataSet.
    DataSet1.Relations.Add(relCustOrder)
End Sub

After that you can use GetChildRows API of DataRow to verify the produced hierarchy data. More information on how to use DataRelations you can find in this MSDN article.

I hope this helps.

All the best,
Julian Benkov
the Telerik team

SP1 of Q3’11 of RadControls for WinForms is available for download (see what's new).

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Cesar
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answered on 01 Feb 2012, 06:13 PM
Hello Julian


Thanks for for help, i have checked all possible variables but i could not find the explain of this behaivor, i choose to work with the radtree 



Regards
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Mariajo
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answered on 07 Nov 2017, 02:54 PM

Hello, i have a report made with reporting Q3 2013 and VS 2012. When installing it on the client, it gives error 40: a connection with SQL could not be opened. The report in local is ok. that could be happening? other report in the same app are ok, with de same connection.

Thank you

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Cesar
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Julian Benkov
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Cesar
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Mariajo
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