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PODynamically created button requires 2 clicks to return view state
 

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    <p>I'm trying to create a page dynamically, but I falling at the first herdle. I have create the below after reading may blogs/post/articles. The problem I have is when I click the first buttons I created nothing happend, if I then click it again it works.</p> <p>Can any one tell me where I'm going wrong?</p> <p>Thanks</p> <p>ASP Page:</p> <pre><code>&lt;%@ Page Title="Create / Amend Quotes" Language="vb" AutoEventWireup="false" CodeBehind="Quote.aspx.vb" Inherits="BIS.Quote" %&gt; &lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; &lt;head id="Head1" runat="server"&gt; &lt;title&gt;&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;form id="form1" runat="server"&gt; &lt;div&gt; &lt;asp:PlaceHolder ID="PlaceHolder1" runat="server"&gt;&lt;/asp:PlaceHolder&gt; &lt;/div&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>VB</p> <pre><code>Imports System.Data Imports System.Data.SqlClient Public Class Quote Inherits System.Web.UI.Page Const CREATE_SELECTION As String = "create" Const AMEND_SELECTION As String = "amend" Const VIEWSTATEKEY_DYNCONTROL As String = "VS_Controls" Protected Property VS_Controls() As String Get Dim result As String = ViewState.Item(VIEWSTATEKEY_DYNCONTROL) If result Is Nothing Then Return String.Empty Else Return result End If End Get Set(ByVal value As String) ViewState.Item(VIEWSTATEKEY_DYNCONTROL) = value End Set End Property Private Sub Quote_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init PlaceHolder1.Controls.Clear() End Sub Private Sub Quote_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Select Case Me.VS_Controls Case CREATE_SELECTION Dim Lab As New Label Lab.ID = "Tester" Lab.Text = "Create" Me.PlaceHolder1.Controls.Add(Lab) Case AMEND_SELECTION Dim Lab As New Label Lab.ID = "Tester_2" Lab.Text = "Amend" Me.PlaceHolder1.Controls.Add(Lab) Case Else Dim btn_create As New Button Dim btn_Amend As New Button Dim Label1 As New Label btn_create.ID = "but_Create" btn_create.Text = "Create" btn_create.CommandName = "Create" AddHandler btn_create.Click, AddressOf onClick btn_Amend.ID = "but_Amend" btn_Amend.Text = "Amend" btn_Amend.CommandName = "Amend" AddHandler btn_Amend.Click, AddressOf onClick Label1.id = "lab1" Label1.Text = VS_Controls Me.PlaceHolder1.Controls.Add(btn_create) Me.PlaceHolder1.Controls.Add(New LiteralControl(" ")) 'space them out Me.PlaceHolder1.Controls.Add(btn_Amend) Me.PlaceHolder1.Controls.Add(New LiteralControl(" ")) 'space them out Me.PlaceHolder1.Controls.Add(Label1) End Select End Sub Private Sub onClick(ByVal sender As Object, ByVal e As EventArgs) Dim From As Button = DirectCast(sender, Button) Dim But_String As String = From.ID If But_String = "but_Create" Then Me.VS_Controls = CREATE_SELECTION ' Me.VS_Controls = "create" ' ViewState("create_amend") = "create" ElseIf But_String = "but_Amend" Then Me.VS_Controls = AMEND_SELECTION 'ViewState("create_amend") = "amend" End If End Sub Private Sub Quote_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.PreRender End Sub End Class </code></pre>
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