Asp.net - Dynamically Create New Dropdownlist On Indexchange
Mar 22, 2012
I've a dropdownlist to start.
When the index change event of this first dropdownlist fires, I need a second dropdownlist (populated according the value of the first ddl).
It's ok to generate the second ddl but what about a third? I actually need it to be dynamically created (it should be able to create an infinite number of dropdownlist)
How can get the index change event of the 2nd dropdownlist, 3rd, 4th and so on?
I have a problem with DropDownList's SelectedIndexChanged event. when the value of district DropDownList is changed, it fires its SelectedIndexChanged event but it does not fill the licencee DropDownList. Also, when the value of dynamically created brandDropDownList is changed, it first fires the SelectedIndexChanged event of district DropDownList and then fills the licencee DropDownList. I am giving some code here so you can understand what I am saying.
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)
I have a window having 2 dropdowmlists(schemename-SN and propertyno-PN) , one chkbox ,one "VIEW" button.SN has options "all" with value=0 and many other options with respctive values.Now,i want the code should behaves as follows:
1.0n window onload, SN must b visible bt PN nt.
2.if i select SN other thn All...the PN shud b visible and if i select "All" ,PN hides.
3.when check box is checked- PN hides,and if it is unchecked- PN visible..
Important:-This whole ddl n chk box are in updatable panel,button is nt in that.I want a browser compatible code so javascript can't b used directly(cz they give problem in mozzila and chrome).Right now, i have done this JavaScript and its is working fine.
function window.onload() { DisableProperty(); }
[code]....
but this code is not browser compatible.here onload,onkeyup and onclick functions are used , but they dont work in other browsers except internet explorer.
I have found a couple of examples on the internet to do this but really struggling to get it working in VB. (Tried a converter but had mixed results) I need the selection options of a Dropdownlist to be populated based upon the differing values in the first dropdown list.
Can anyone help with a releativley simple example in VB? Not fussed if the values are "hard coded" in the script. Or a SQL bit that pulls the data from a table
I would like to create a folder dynamically in vb.net.I know System.IO.Directory.CreateDirectory("c:NewFolder") would create folder in the directory but I want folder to be created in the application and visible on my web page.its like when I say create album ..I should be able to create a folder with album name on it.
I want to create a form dynamically.I have a section on the form that has 3 combobox and 2 buttons. What I want is when the user clicks on the '+' button it add another 3 combobox and 2 buttons below the first, and so on and so on. Also when the user clicks the '-' button I want to remove the row of 3 combobox etc.
I have created a function that uses the Mailto: vb control, It Works like this: SendEmail("Address@address.com, "subject", "Mail body.")The email address subject are all created dynamicly,and my function works fine when testing.
however, I want to dynamicly create the button and dont know how to make it call a function with params on click, Here is what im trying: Private Sub Form2_load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
I have a form with a textbox to enter a number and a button called "Create". When a user enters a number and clicks create the form gets populated with the number of buttons entered in the textbox and the title of the buttons are labeled by consecutive numbers. For example if you enter 5 the form will populate with 5 buttons labeled button1, button2, ...button5. When you click on these newly created buttons a messagebox will popup stating the buttons name. Basically I need to know how to create events and populate them with code I guess dynamically.
I have a form that I am adding a set of buttons to. I am adding an event to those buttons. I need this event to function slightly to determine what button was pressed.I need the button to simply set a string variable equal to the clicked buttons text so I can determine what button was pressed.How can this be accomplished?
'' 'Adding the buttons '' For Each dr In dtMenus Dim strMenuName As String
I want to monitor more than 10 folders on different machines by using SysTemFileWatcher. I create a class called Watcher for doing monitoring. So, for each folder I have to call that class once with a new thread. I want to name each thread with its own name like: T1, T2, T3 ... for easier controlling them. It is not nice if I declare each thread like:
Dim T1 as Thread =new Thread(Address of Watcher.StartWatcher) Dim T2 as Thread =new Thread(Address of Watcher.StartWatcher) ... Dim T18 as Thread =new Thread(Address of Watcher.StartWatcher)
How can I declare thread names dynamically with the names just like that. I have tried to use Thread array() but it doesn't work.
Is it possible to dynaically create table name in MS Access: Below is my CODE: strSQL = "CREATE TABLE" + Me.Text + "( ID Counter," & _ "Name TEXT(50) NOT NULL," & _ "PRIMARY KEY(ID) )" But, I am getting a run time error that syntax is wrong.
How dan I dynamically create some public properties on a custom webcontrol.
For example, web control has 5 TextBox controls. I need a public property for each TextBox control to be able to set a specific property of the TextBox control.
I want to be able to loop the controls in the webcontrol and create a public property for each TextBox control.
i am trying to figure out how to go about creating dynamic checkboxes on my form when i do not know axacctly how many boxes i will need.The problem is that i do not know how to DIM more than one object. This is my code for creating one checkbox
Dim heckBox As New CheckBox() Form1.Controls.Add(checkBox) checkBox.Location = New Point(10, 10)
Is there a way to write an application in VB.NET that will create a Compact 3.5 database on my desktop and then fill it with data from a SQL 2000 database?
A while back I asked a question on how to create EXEs at dynamically at runtime. This time, I wanted to know how to add code to your program dynamically at runtime too. Like if I had a textbox on a form, and I typed whatever code into it, then it would add the code to a subroutine and it would be executed. How can this be done?
I want to create labels in my page dynamicly, for example the user will choose in a textbox the number of labels, and I will display the number of this label with .text = "XYZ".
I need to create a pdf file dynamically in vb.net. It needs to contain several images and lines of text. I am using VS 2003, so whatever solution I use will need to be compatible with the .net 1.1 framework. The current method I am using is wpcubed, but this requires that all images be converted to bmp format before adding them to the pdf, which can be extremely slow when dealing with a large number of images.
I am aware that there are an awful lot of other 3rd party products that claim to do this, and I have had a search through them. But without registering, downloading, installing and writing code to use each of them in turn, it is very difficult to differentiate between them. So far I have looked into evo pdf and pdfsharp,tallcomponents, [URL] but none seem to work with .net 1.1. (Although they don't make this abundantly clear.)
I have a table with fields player1Name,player2Name..etc. How does one create the field names dynamically. I tried this..doesn't work obviously.[code]....
I would like to create subdomains Dynamically under my domain using asp.net ,C#?I can not find good solution for this.What are the things i should do to complete this.
1.user register with site 2.domain name should be:url...
I have a project setup, where depending on a certain variable one of two controls will be used. Either the default webbrowser or the gecko control. Now I can load either one fine dynamically but I can't work out how to use either one depending on a variable result.To load the one I know I want is easy enough..
Code: Private WithEvents wb As Skybound.Gecko.GeckoWebBrowser wb = New Skybound.Gecko.GeckoWebBrowser() Me.Controls.Add(wb)
[code]....
I want my webbrowser to be called wb as I already have all the event handlers written.
