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Listbox Dropped In Dynamic TextBox

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Ajax

This is a migrated thread and some comments may be shown as answers.

Nuwea asked on 18 Jun 2020, 12:29 AM

desktop-2020-06-18---02-05-14-02-(4).gif

Hi,

I would like to drop items from a listbox into automatically generated textboxes.
when I use "tbxTester" it works very well but not with dynamic textboxes.

Thank you for your help

Droped ():

System.MissingMemberException: The public member 'text' of type 'Object' was not found. to Microsoft.VisualBasic.CompilerServices.Symbols.Container.GetMembers (String & MemberName, Boolean ReportErrors) to Microsoft.VisualBasic.CompilerServices.NewLateBinding.LateSet (Object Instance, Type Type, String MemberName, Object [] Arguments, String [] ArgumentNames, Type [] TypeArguments, Boolean OptimisticSet, Boolean RValueBase, CallType CallType) to Microsoft.VisualBasic.CompilerServices.NewLateBinding.LateSet (Object Instance, Type Type, String MemberName, Object [] Arguments, String [] ArgumentNames, Type [] TypeArguments) to Page_Telerik .lbxItems_Dropped (Object sender, RadListBoxDroppedEventArgs e) in \TelerikDemoStandAlone.aspx.vb: line 88

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="TelerikDemoStandAlone.aspx.vb" Inherits="Page_TelerikDemoStandAlone" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml" lang="fr-fr">

<head runat="server" lang="fr-fr">

<meta name="robots" content="noindex,nofollow" />

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" lang="fr" />

<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />

<link href="/css/coreCss.css" rel="stylesheet" type="text/css" />

</head>

<body>

<form id="FormMain" runat="server" lang="fr-fr">

<telerik:RadScriptManager ID="rsm" runat="server" />

<main>

<section>

<article class="container full home">

<div class="row">

<asp:Panel ID="pnlMain" CssClass="col-xs-12 col-h" runat="server">

<telerik:RadAjaxPanel ID="ajaxPanel1" runat="server">

<div class="col-xs-12 col-md-12 col-h">

<telerik:RadComboBox ID="cbxSizeBox" AutoPostBack="true" Width="100%" Filter="Contains" Skin="MetroTouch" RenderMode="Lightweight" runat="server" />

</div>

</telerik:RadAjaxPanel>

<telerik:RadAjaxPanel ID="ajaxPanel2" runat="server">

<div class="col-xs-12 col-md-2 col-h">

<div class="col-lng">

<h2>Items</h2>

<asp:Panel ID="pnlItems" CssClass="col-xs-12 col-h" runat="server">

<telerik:RadListBox ID="lbxItems" Width="100%" Height="500px"

SelectionMode="Multiple" AllowTransfer="true" AutoPostBackOnTransfer="true" AutoPostBack="true"

AllowReorder="true" AutoPostBackOnReorder="true" EnableDragAndDrop="true"

ButtonSettings-ShowDelete="false" ButtonSettings-ShowReorder="false" ButtonSettings-ShowTransfer="false" ButtonSettings-ShowTransferAl="false" ButtonSettings-ShowTransferAll="false"

OnDropped="lbxItems_Dropped"

Skin="MetroTouch" RenderMode="Lightweight"

runat="server" />

</asp:Panel>

</div>

</telerik:RadAjaxPanel>

<telerik:RadAjaxPanel ID="ajaxPanel3" runat="server">

<div class="col-xs-12 col-md-10 col-h">

<div class="col-lng">

<h2>Boxes</h2>

<telerik:RadTextBox ID="tbxTester" Text="TextBox tester ..." runat="server" />

<asp:Panel ID="pnlMaper" CssClass="col-xs-12 col-h" runat="server" />

</div>

</telerik:RadAjaxPanel>

<telerik:RadAjaxPanel ID="ajaxPanel0" runat="server">

<div class="col-xs-12 col-h" style="max-height: 400px; overflow-y: scroll;">

<asp:Label ID="litDebug" ForeColor="red" runat="server" />

</div>

</telerik:RadAjaxPanel>

<telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server">

<div class="col-xs-12 col-h" style="max-height: 400px; overflow-y: scroll;">

<asp:Literal ID="litRslt" runat="server" />

</div>

</telerik:RadAjaxPanel>

<div class="col-xs-12 col-h text-center">

<telerik:RadButton ID="btnSubmit" AutoPostBack="true" Text="save" Skin="BlackMetroTouch" Icon-PrimaryIconCssClass="rbSave" RenderMode="Lightweight" runat="server" />

</div>

</asp:Panel>

</div>

</article>

</section>

</main>

<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" Width="256px" Height="64px">

<asp:Label ID="AjaxLoadingPanelLabel" runat="server" ForeColor="Orange" Text="Loading..." /><br />

<asp:Image ID="AjaxLoadingPanelImage" runat="server" Width="224px" Height="48px" ImageUrl="~/img/Loading.gif" />

</telerik:RadAjaxLoadingPanel>

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="lbxItems">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="lbxItems" LoadingPanelID="RadAjaxLoadingPanel1" />

<telerik:AjaxUpdatedControl ControlID="tbxTester" LoadingPanelID="RadAjaxLoadingPanel1" />

<telerik:AjaxUpdatedControl ControlID="litDebug" LoadingPanelID="RadAjaxLoadingPanel1" />

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="cbxSizeBox">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="pnlMaper" LoadingPanelID="RadAjaxLoadingPanel1" />

<telerik:AjaxUpdatedControl ControlID="litRslt" LoadingPanelID="RadAjaxLoadingPanel1" />

<telerik:AjaxUpdatedControl ControlID="litDebug" LoadingPanelID="RadAjaxLoadingPanel1" />

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="btnSubmit">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="litRslt" LoadingPanelID="RadAjaxLoadingPanel1" />

<telerik:AjaxUpdatedControl ControlID="litDebug" LoadingPanelID="RadAjaxLoadingPanel1" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

</form>

</body>

</html>

Imports Telerik.Web.UI

Imports System.Web.UI.WebControls

Imports System.Drawing

Imports System.Linq

Imports Newtonsoft.Json

Partial Class Page_TelerikDemoStandAlone

Inherits System.Web.UI.Page

Protected Sub Page_PreInit(sender As Object, e As EventArgs) Handles Me.PreInit

End Sub

Private Sub Page_Init(sender As Object, e As EventArgs) Handles Me.Init

If Not IsPostBack Then

ViewState("datasBag") = ""

End If

End Sub

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load

If Not IsPostBack Then

lbxItems_GatDatas()

cbxSizeBox_GatDatas()

End If

End Sub

' lbxItems ///////////////////////////////////////////////////////////

Private Sub lbxItems_GatDatas()

lbxItems.Items.Clear()

lbxItems.ClearSelection()

Dim isa As New itemStandAlone

Try

If isa.getItems() Then

Dim itemValue As String = "", itemText As String = "", itemTooltip As String = "", itemEnabled As Boolean = False

For i As Integer = 0 To isa.DT.Rows.Count - 1

Dim idI As Integer = CInt(isa.DT.Rows(i)("id"))

Dim titleI As String = Trim(isa.DT.Rows(i)("label").ToString() & "")

Dim valueI As String = Trim(isa.DT.Rows(i)("value").ToString() & "")

itemValue = valueI

itemText = titleI

itemEnabled = True

itemTooltip = idI & ";" & titleI & ";" & valueI & ";"

Dim rlbi As New RadListBoxItem

rlbi.Value = itemValue

rlbi.Text = itemText

rlbi.ToolTip = itemTooltip

rlbi.Enabled = itemEnabled

lbxItems.Items.Add(rlbi)

rlbi = Nothing

Next

lbxItems.Enabled = True

Else

lbxItems.Enabled = False

litDebug.Text &= "itemStandAlone.getItems() : no items"

End If

Catch ex As Exception

lbxItems.Enabled = False

litDebug.Text &= ex.ToString()

End Try

'isa.Dispose()

isa = Nothing

End Sub

Protected Sub lbxItems_Dropped(ByVal sender As Object, ByVal e As RadListBoxDroppedEventArgs)

Dim debug As String = ""

Dim datasTxt As String = "", emptyTxt As String = "", errorTxt As String = "error"

Dim selectedCtrl As New Object

Try

For Each item As RadListBoxItem In e.SourceDragItems

If item.Value.ToString <> "" Then

datasTxt = item.Value.ToString

End If

Next

If (TypeOf pnlMaper.FindControl(e.HtmlElementID) Is Telerik.Web.UI.RadTextBox) Then

selectedCtrl = DirectCast(pnlMaper.FindControl(e.HtmlElementID), Telerik.Web.UI.RadTextBox)

ElseIf tbxTester.ClientID = e.HtmlElementID Then

selectedCtrl = DirectCast(tbxTester, Telerik.Web.UI.RadTextBox)

End If

If (datasTxt <> "") Then

If selectedCtrl IsNot Nothing Then

selectedCtrl.Text = datasTxt

Else

debug &= "selectedCtrl Is Nothing !!! <br/>"

debug &= "pnlMaper.FindControl(e.HtmlElementID).ClientID : " & pnlMaper.FindControl(e.HtmlElementID).ClientID.ToString & "<br/>"

End If

Else

debug &= "datasTxt Is empty !!! <br/>"

End If

Catch ex As Exception

debug &= "Droped() : <br/>" & ex.ToString & "<br/>"

End Try

litDebug.Text &= debug

End Sub

' cbxSizeBox ///////////////////////////////////////////////////////////

Private Sub cbxSizeBox_GatDatas()

cbxSizeBox.EmptyMessage = "Select your size ..."

cbxSizeBox.Items.Insert(0, New RadComboBoxItem("4", 4))

cbxSizeBox.Items.Insert(1, New RadComboBoxItem("8", 8))

cbxSizeBox.Items.Insert(2, New RadComboBoxItem("12", 12))

End Sub

' GenerateMaper ///////////////////////////////////////////////////////////

Private Sub GenerateMaper(x As Integer, y As Integer)

Dim gTxt As Telerik.Web.UI.RadTextBox

Try

pnlMaper.Controls.Add(New LiteralControl("<table id='gridBoxes' cellspacing='0' cellpadding='0'>"))

For i = 1 To x

pnlMaper.Controls.Add(New LiteralControl("<tr>"))

For j = 1 To y

pnlMaper.Controls.Add(New LiteralControl("<td>"))

gTxt = New Telerik.Web.UI.RadTextBox

gTxt.ID = "boxCase_" & i.ToString & "x" & j.ToString

gTxt.Attributes.Add("datas-positions-x", i)

gTxt.Attributes.Add("datas-positions-y", j)

gTxt.Attributes.Add("datas-value", 0)

pnlMaper.Controls.Add(gTxt)

controlBag.Add(gTxt.ID.ToString, gTxt)

pnlMaper.Controls.Add(New LiteralControl("</td>"))

Next

pnlMaper.Controls.Add(New LiteralControl("</tr>"))

Next

pnlMaper.Controls.Add(New LiteralControl("</table>"))

SetDatasBag_ViewState()

Catch ex As Exception

litDebug.Text = ex.ToString()

End Try

End Sub

' datasbag ///////////////////////////////////////////////////////////

Protected controlBag As New Dictionary(Of String, Control)

Private Function GetDatasBag() As String

Dim output As String = ""

Try

If ViewState("datasBag") IsNot Nothing Then

output = ViewState("datasBag")

End If

Catch ex As Exception

output &= ex.ToString & "<br/>"

End Try

Return output

End Function

Private Function SetDatasBag_ViewState(Optional debug As Boolean = False) As Boolean

Dim output As Boolean = False, outputDatas As String = "", _dbg As String = ""

Try

Dim dt As New DataTable

dt.Columns.Add("id", GetType(Integer))

dt.Columns.Add("x", GetType(String))

dt.Columns.Add("y", GetType(String))

dt.Columns.Add("val", GetType(String))

Dim i As Integer = 0

For Each ctrl In controlBag

i += 1

If TypeOf ctrl.Value Is Telerik.Web.UI.RadTextBox Then

Dim gTxt As Telerik.Web.UI.RadTextBox = DirectCast(ctrl.Value, Telerik.Web.UI.RadTextBox)

Dim x As String = gTxt.Attributes("datas-positions-x").ToString(), y As String = gTxt.Attributes("datas-positions-y").ToString(), val As String = gTxt.Attributes("datas-value").ToString()

dt.Rows.Add(i, x, y, val)

If (debug) Then

_dbg &= "id:" & i & ";"

_dbg &= "x:" & x & ";"

_dbg &= "y:" & y & ";"

_dbg &= "val:" & val & ";"

_dbg &= "<br/>"

End If

Next

outputDatas = JsonConvert.SerializeObject(dt)

output = (outputDatas <> "")

If (output) Then

ViewState("datasBag") = outputDatas

End If

Catch ex As Exception

_dbg &= ex.ToString & "<br/>"

End Try

If (_dbg <> "") Then

litDebug.Text = "SetDatasBag_ViewState : " & _dbg

End If

Return output

End Function

' controllers ///////////////////////////////////////////////////////////

Protected Sub btnSubmit_Click(sender As Object, e As EventArgs) Handles btnSubmit.Click

litRslt.Text = GetDatasBag()

End Sub

Private Sub cbxSizeBox_SelectedIndexChanged(sender As Object, e As RadComboBoxSelectedIndexChangedEventArgs) Handles cbxSizeBox.SelectedIndexChanged

If (IsNumeric(e.Value)) Then

GenerateMaper(e.Value, e.Value)

End If

End Sub

End Class

' itemStandAlone //////////////////////////////////////////////////////

Public Class itemStandAlone

Implements IDisposable

Public Sub Dispose() Implements IDisposable.Dispose

DT.Clear()

DT = Nothing

GC.SuppressFinalize(Me)

End Sub

Public DT As New DataTable

Public Function getItems() As Boolean

Dim output As Boolean = False

DT.Columns.Add("id", GetType(Integer))

DT.Columns.Add("label", GetType(String))

DT.Columns.Add("value", GetType(String))

For i = 1 To 24

DT.Rows.Add(i, "LABEL (" & i.ToString & ")", "V" & i.ToString)

Next

If DT.Rows.Count > 0 Then

output = True

End If

Return output

End Function

End Class

Listbox Dropped In Dynamic TextBox

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