How do you get a specific nested control of dynamically created controls (i.e. the child of a dynamic control)? The FindControl() method does not work because it only deals with TopLevel dynamic controls I believe.
View 2 RepliesIve tried searching for hours now and cannot find out why my code (aka, me.) is failing
Basically... I have a listview control which I'm passing a datatable of products (ID, Name, Description and Price columns), and im trying to make it so that when the "checkout" button is pressed, it parses through all the controls on the page, finds all the controls with the correct ID's and adds the items values to the cart.
ive checked all my ID's in the source code and they match up to the ones being requested by the FindControl method.[code]...
I have a web page where I want users to enter ratings for a particular software. I have got this working fine. What I am after now, is that users need to be logged in to enter ratings. I have dragged the loginview control onto the page and dragged all the other controls/datasources into this view. However now I am getting alot of squiggly lines regarding my controls not being declared. I have been told that I need to use the FindControl method. However I'm not sure on how to use it in my instance as I have a dropdownlist involved.
The controls are called: LoginView1, DropDownList1, TextBox1 and Button1 for the insert.
Any proper declarations so I can insert data into my database. Here is the code as it stands outside of the loginview:
Sub doInsert(ByVal Source
As
Object,
ByVal E
As EventArgs)
Handles Button1.Click
[Code] .....
I created a row (header row) in a gridview with a dropdownlist among other input controls. I also put a button on that row (fltbttn-see below).I created an addhandler for the button called fltbttn_Click.I want gain access to my dropdownlist(ddlscantype) using findcontrol but how can I get to the header row where the filter controls exist?[code]......
View 2 RepliesIs it possible to do postback dynamically in vb.net or c#.net?
THere is a asp button (let say buttonA) if i click buttonA it has to do some actions and then trigger postback
postback should not be triggered onclicking a button . only after performing some actions it has to trigger postback
I have a form that has an array of dynamically created labels of varying size based on a search from a database. The problem I'm having is that when the user searches for a different term, it looks like some of the labels don't get new values. Here's my code for adding the labels:
If rdr.HasRows Then
ReDim Preserve entities(cnt)
While rdr.Read()
[Code].....
I've tried for loop over the controls in panel1 to dispose of any still on there in both the page_load and page_init subs, but neither had an effect. I don't know if it might have something to do with controls having the same IDs after the postback.
I have a page that contains some dynamically created controls (TextBox and DropDownList). When a postback occurs, the TextBoxes keep their values, but the DropDownLists lose their ListItems. This is quite confusing, since the page level DropDownList also keeps its ListItems.
<%@ Page Language="VB"%>
<script runat="server">
Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs)
[Code].....
I am currently using nested masterpages in my latest asp.net 4.0 project and i want to change the look and feel dynamically, so the homepage may just be 1 column wide, about us page may be 2 columns etc. I am dynamically loading the masterpage dependant on the record selected in the DB (1column.master, 2column.master) on the pre_init event of a static page (Load.aspx) which work succesfully however i need to be able to dynamically add controls to the page in order to get the desired layout. Is this possible, is there a better way of achieveing this?
View 1 RepliesWithin my webpage I am loading usercontrols within a placeholder. Each of these user controls triggers a postback when an ajaxcontroltoolkit rating is changed. The problem I am having is that if I use [code]The Load_EvaluationList is what loads the user controls, if I place the IsPostBack check around those two, the controls disappear, what could be the problem
View 3 RepliesLet's say we have a composite web control with a combobox and a textbox. Is it possible to build into the control functionality such that when the text in the textbox changes, it posts back and adds the value as an option in the combobox?
I know that I could add an "onchange" handler to the textbox and make something work with Javascript, but that's not really what I'm looking to do. Is there a way to just put like:
CODE:
In the web control code and it connect to the TextChanged event of the textbox?
I have a couple of controls that are set to runat="server", but are showing up as "not declared" in the vb code behind. They are not being setup in the designer.vb file at all, even if the design.vb is re-created.
The only thing that I can think might be causing this is that the controls are inside of a custom control. The code looks something like this (it has been modified because of NDA):
<abc:MyCustomControl>
<additionalItems>
<asp:CheckBox id="coolCheckboxOfPower" runat="server" Text="Triple Rainbow!">
[Code]....
So using the example above, if I try to use coolCheckboxOfPower in my vb page, it says it is not declared.
It has been suggested to me that asp controls cannot be nested. Is this true, and if so, how do I get around that?
How do capture which button caused the postback on a web form with multiple controls using asp.net
View 3 RepliesI have form, on which a component is placed, which is inherited from Forms.UserControl. This component, called Panel, handles the layouting as visible in the screenshot below.
The screenshot shows 10 Panels. Each Panel contains its own title bar and visible area, in which any UI can be displayed.When the application starts, the application contains only one single Panel. When the user decides to split this Panel into 2 Panels, those new Panels are displayed side-by-side in the area of the old Panel either horizontally or vertically. Inbetween these Panels a splitter is added, so that the user can resize the Panels. The user can do the splitting multiple times, so that you reach a layout as given in the screenshot above with 10 Panels.
Minimizing and the maximizing the application causes a painting issue as displayed in the screenshot below. The red rectangle indicates the area, where the layout is not displayed properly.
Here some additional information:
1. Windows 7 The issue occurs only on Windows 7 machines. On Windows XP the application is running properly.
2. .Net Framework The application was developed for the .Net Framework 1.1. I upgraded it to 4.0. All warnings were fixed, which occured after the upgrade to 4.0.
3. Layouting Technically The Panel works internally with mutiple Forms.Panel, 1 Forms.Splitter etc. objects. If the Panel is not splitted, it displays the title bar and a visible area below, both instances of Panel. If splitted, the Panel replaces the title bar and visible area with 2 instances of Panel again but divided by a Splitter.
I have a nested custom control that I need to set focus on. I have it all internally wired up to automatically set the focus when the form loads, but when it comes up on screen, the designated accept button for the parent form is in focus instead. Even when is disassociate the accept button it still does not set correctly. How can I ensure my desired control gets focus.
View 2 RepliesI have a panel sitting in a div, and I want to use that panel as a container to add more panels! Why would I want to add a panel to a panel? Because the panel that I'm adding to the existing panel, is also made to contain objects, but only and image and label.
The existing master container panel is created during design time, and goes by the lovely name of "toolboxpanel". During run time, I have a for/next loop that dynamically creates an image, a label, adds them both to a panel, then adds that panel to the toolboxpanel,[code]...
I'm looking for a the shortest/aseist way in VB.NET (or C# but using VB.NET at the moment) to get the string value of a method's name dynamically given the method call.For instance, I have a class like this:
Public Class Blah
Public Sub Foo()
End Sub
End Class
Now Foo is a strongly-typed cover for a dynamic setting and I have an event handler that will fire when the setting changes and return the string name of the setting that changed.
I'd like to be able to switch/select on this string and have a case based on the Foo() method. To do this I need to able to get the string name of the Foo method from the method call itself (i.e. somehow GetMethodName(blahInstance.Foo())).
What's the best way to dynamically remove method calls at runtime? Essentially what I'd like to do is pass a parameter to my application. Let's call the parameter level. Depending on the value of level, I'd like to essentially remove all the calls that have higher levels. I have the following but was wondering if there were a simpler/cleaner way to remove the calls:
Ideally I'd really like to write something like:
Log5("message")
And just have Log5 work or not call if it doesn't exist. My goal is to actually remove the call. The overhead for calling level 5 logs that test and return is fairly high and I rarely use it.
Module Module1
Delegate Sub Log(ByVal message As String)
Public Log1 As Log = Nothing
Public Log2 As Log = Nothing
[Code].....
I'm making a little program in where i'm trying to invoke a method from a class dynamically with so called Reflection.The class I'm trying to call is called ContactList and i try to invoke the method in this class called count. The assembly itself is called Contact.ExeNow I have the following code:
Public Function InvokeContacts() As Integer
Dim ContactsAssembly As Assembly = Assembly.LoadFrom("Contacts.exe")
Dim Mycontactlist As Type = ContactsAssembly.GetType("ContactList")
[code]....
I'm trying to add a "panel" with controls dynamicaly. Something like the code below, Clicking "Add" button, displays a "Panel" with the controls(which are within a table), the number of "Education" someone can enter is unlimited. I know how to capture the data, but i can't figure out how to implement/code this,
[Code]....
I understand the page lifecycle and how i need to add the dynamic controls on page_init if I want to take advantage of viewstate. Also I know that I should try to avoid dynamic controls when possible. The dynamic controls are created depending on an object that is created from custom event arguments sent from a custom treeview. Problem is I need viewstate so I need to create them in page_init but I don't have the event args to create the object that tell me what controls to add until later in the lifecycle.
Private Function GetEventArgs() As npTreeViewEventArgs
Dim control As Control = Nothing
Dim e As npTreeViewEventArgs = Nothing
[code]....
I use this in page_init to create my object and controls.
I've successfully been able to add controls (labels, images, buttons, etc) to a panel control (using VB/ASP). This panel control, I refer to it as "insertpanel". Then I add this panel to the main panel on my webpage which I made during design time. The problem I run into is that when I add multiple controls of any type to the panel, they are all added in line with each other. I tried giving my image some css-styling of[code]....
View 1 RepliesI am looking for the best way to dynamically arrange the location of labels (or any control for that matter) during runtime in a Windows Forms application using VB.net or C# in VS2008.I have a control that displays messages created by users.This control has a panel docked at the top which holds the header information for each message, called pnlHeader There are 8 labels: 4 of them display static descriptions (e.g. "To", "From", "Created Date", "Completed Date")And the other 4 display the relevant data for those descriptions. (Passed in during runtime from a MS SQL 2005 DB).Static labels are named: lblCreatedDateLbl and dynamic ones: lblCreatedDate The application runs on monitors of various size and resolution, therefor I would like for all of the labels to arrange themselves with equal spacing in pnlHeader, based on the current width of the panel.
At first, I had simply created the labels in the Designer and used Anchors (half of the lables were set to (Top, Left) and the other half to (Top, Right)). This solution worked for most scenarios, but did not always provide a consistent solution, so I decided to add the controls in code instead.
I thought it would be easier to work with the labels by creating a panel for each corresponding pair. So pnlCreatedDate would hold lblCreatedDateLbl and lblCreatedDate I wrote 2 methods: 1 to define each label and add it to the relevant panel: Sub AddLabels
and another to determine the width of the panels and set the correct location: Sub SetLoc Currently, AddLabels runs in the constructor after InitializeComponent() and SetLoc is called after the data has been passed in from the database.
I've tried making minor changes and tweaks to the width and size parameters, enabling and disabling AutoSize, but nothing returns a consistent solution, instead either all the description labels are misplaced, or do not appear at all or completely whack locations come up.
Private Sub AddLabels()
'Label Created By:'
lblCreatedByLbl.Location = New Point(0, 0)
[code]....
Is it possible to dynamically direct a particular control's event to use a predefined method.For example.I have a form which I dynamically add controls to, let's say, TextBox1,TextBox2 and TextBox3 and a module which as 3 routines, Method1, Method2, Method3. When I dynamically add my controls, eg TextBox4, I want to choose which of the 3 methods I want mapped to which event.
.
Dim objTextBox1 as new TextBox
dim NameOfRoutine$="Module.Method2"
Form.Controls.Add(objTextBox1)[code]........
I'm wondering, when I add dynamically controls in runtime in the form - is there a way to save this controls, and they appear the next time when you run the application?
I'm using VB9.
I'm developing a website in visual studio 2008 using (asp.net/vb)I have to allow registered users to build pages and add controls that are already defined by the same userMy problem is how to build this page dynamically?In other words, I'd like to make like any CMS (e.g. Joomla). CMSs allow us to make new pages and add our controls then save them..
View 1 RepliesI am working on a project for a handheld in Visual Studio 2008 where I need to add a group of labels to a panel that correspond to a record on the database. The record is a "Pass/Fail" Record. So, if the record is a "Fail", the failed items will be added below the main group of labels; therefore, many child groups of labels will be added below the main group, which is theoretically the header record. I am using a second panel to add the failed items. My issue is how to dynamically add, name, and position the failed item labels and panels. Below, I have included a sample of what I am trying to accomplish.
View 12 RepliesWhat I am trying to do is dynamically create a bunch of dropdown lists and then I want to loop through them and update the database with those values, but the problem I am facing is that I create the dropdown lists, but then when I go back to loop through them they are no longer in the panel. I don't know why but when I am debugging I have a count of 50 controls in pnlTeacherSelect right up until I press the button that calls prcChoose.
[Code]...
Using ASP.Net MVC1 and am dynamically creating the html in a model that is then dropped into the view and rendered at run time.
My view is a single page that looks like this:
<%@ Page Language="VB" Inherits="System.Web.Mvc.ViewPage" %>
<%=(ViewData("Content"))%>
This dynamically created content is mostly dropdownlist boxes in the format of
<form method=post action="/questions/nextBatch">
<div id="text">What is your preferred drink?</div>
<select>
[Code]....
Is it is possible to perform validation on the dropdowns lists to ensure that a value has been selected? If any of the dropdownlists that still have the default value (the "please make a selection" text) the page is then redisplayed with the font colour of the question or dropdownlist box changed to say red?
I'm from the Webforms world and have made the switch over to MVC (which I really like!) and I know there are some pretty slick validation tools out there but you seem to have to account for them within the view itself.
I cannot pass a HTML helper through the viewdata of the controller as it does not render unless it has been coded directly into the view itself.
Also, I'm looking for a pure asp.net solution as I cannot use javascript due to accessiblity concerns. I can access all the values of the dropdowns without any problems throug the formscollection object but from there I'm a bit stuck.
like this i have n number of questions in my word document. so my need is i need to read the questions and fill it up in the datagridview with yes or know chek box. my datagridview appearance would be as follows. so the peson who is viewing the questions and can make yes or know option using the check box.if the person chooses no option he has to enter the reason the reason column. so i have to do this dynamically. means that binding datagridview with checkbox ,textbox, data dynamically. how to do this please because after the datas entered in the datagridview i have to loop through rows and i have populate into another word document. so please if there is any sample
View 4 RepliesI have added Following HTML in the Form:
<asp:Table runat="server" ID="tblFlightDetails">
<asp:TableRow>
<asp:TableCell CssClass="ASPTableHeader">
<dx:ASPxLabel runat="server" ID="lblFrom" Text="From" CssClass="LabelFont"></dx:ASPxLabel>
</asp:TableCell>
[Code]...
Now from Serverside code I have added 3 rows dynamically.. when ever page gets Postback.. all dynamically added rows get disappear.How can i get the dynamically added rows after postback??