Controlling web control instances on Web Form
I have created a composite control, extending functionality of the Hidden Control. However, I would like to prevent the user from adding this control to the page multiple times. I only want one instance of the control on the Web Form. What setting in my project to I adjust to enable this functionality? I can not find it in any of the books that I have referenced. Is this a setting or is this code that has to be added to the inheriting class.
Looks like there is no standard apporach. But I'd consider using static field to count number of created objects and throw exception if second object ...controlling an object in a web control from the page the web control is placed in
I have created a web control in vb.net that has an image button and an image. when it loads the image button is visible and the image is not.
I want to be able from the page which "includes" the web control to set the image button to invisible and the image to visible.
When I tried this, the main page didn't recognise the image button or the image (both < asp: objects).
help would be gratefully appreciated.
oh yeah, it's inline code so any code behind stuff will just confuse me ;)
Some code please.-- Justin Lovell...How to access individual controls from a form containing the web user control containing those controls
Below is a block of code in my .aspx form named default.aspx. In this form I load a web user control. I then add it to a place holder control.(Lines 3 and 4 below) So how do I access the individual controls in my web user control? I want to set the properties on those controls, but I am baffled as to how to access the control. For example I have a text label control named "label3". How do I access this control.
Because for example, under certain situations I want to hide that control. ( Label3.Visible = false;)
2&nb...Web control in web control
Hi,There are two simple web user controls A and B, where B contains A. They just display the bunch of text boxes, so I do not need them even in tool pane. They sit in the same project next to web form.I noticed that web user control put on ASPX page does not appear in code behind, but if I create it with protected keyword and name being exactly the same as id it works fine. I can access such a web control from code behind and see the value assigned in IE. The problem is that the same routine does work for my A web control in B. When I assign the value IE, I keep getting null reference. ...UpdatePanel within a web user control resets data of controls outside the user control
I have a usercontrol on my page which displays a running marquee text. It makes use of an UpdatePanel (within the user control) to refresh the marquee text (within the updatepanel) at periodic intervals. For this I added a timer control and its tick event as an async postback trigger for the UpdatePanel.
I have a lot of textboxes and dropdown list boxes (all with runat=server) on the page outside the above user control. These are also contained in different UpdatePanels.
Problem is, when the user control does a postback to refresh the marquee text, it causes some of...how to call controls of web control form in coding of other forms?
hello everyone i have one problem i have created one webcontrol shoppingcart in which there are two labels one of qty and other of amt which are initially enable =falsenow on other page(aspx page) i have one txtbox of qty as txtqty i want tat as soon as user enters qty txtqty and clicks on add cart button it shd be display d value in lblqty of web control shopping cart make sure i m using datalist on aspx page so give me suggestions on tat basis and my coding is in vb. plz give ur suggestions as fast as possible. Neeti
what do you mean by webcontrol.... it this user control or normal ...How to visible an control below the control
i Need all your help
In a form i placed an button. On the click event of button i returned an function to show an calendar
And i placed dropdown control below the button.
When i click the button the was calendar shown on that time dropdown was invisible
What i want is to show the calendar as well as the dropdown control in the form.
waiting for you reply
Inside the click event:
dropdownlist1.visible="true"David WierMCP/ASPInsiderASPNet101.com - where to look first!Please Vote for ASPNet101 - 'Best Community Resource'!Contro...access controls on web user control x from web user control Y
I have 2 web users controls in a page and I would like to get or set the selected values of a few dropdown boxes on web user control X from web user control Y and I also would like to know how to access functions that are on a web user control X from a web user control Y, is this possible? How can I do it?
Using PropertiesIf the Sample.ascx control has two textboxes and submit button.You can access the valu...Setting a panel control's visibility and it's affect in nested controls.
I am trying to debug a page using the panel control. The code in the final submission of the form has logic to get data from a dropdown based on the control's visibility. If the control's visibility is set to true, the the data is retrieved and sent to the database.The problem appears to be the dropdown control's visibility is set to false when it should not. The dropdown is nested in a panel control. While doing a trace, it appears when a panel control's visibility is set to false, the visibility for all controls nested under this panel are set to false as well.You'r...Problem in accessing web form data in user controls when create user control dynamically
I have a problem using web user control. I designed a user control
named NewsForm. This user control contains some web form elements like
<asp:textbox>. When I add it in an .ASPX page, all things may be
true. I can know which user filles in textbox (for example and other controls)
<%@ Register TagPrefix="uc1" TagName="NewsForm" Src="NewsForm.ascx" %>
<UC1:NewsForm id="newsForm" runat="server"></UC1:NewsForm>
But when i create it in code behined dynamically, however user control has web form controls but their value are blank
//aspx co...Custom Control within a Control Control
I am developing a custom controls that will render headers for different web sites. Within these controls, I want to place another custom control that will change the language. I created the language control and had it implement IPostBackDataHandler. This control works fine if I drag it on a new web form, but if I tell a header custom control to render it problems occur. The Language Selector custom control does not have a Page member anymore and the event handlers do not work. Does anyone have any experience with doing something similiar? Anyone have any suggestions?
...How do I control one control from another control?
I have a page page1.aspx which is within a master page.
On page I have a table with two cells. Within each cell I have placed two controls (ascx) that I have developed.
Now I'd like to be able to get these two controls to interact. One needs to update the other. One has some search criteria that the other one needs to update its gridview. One needs to make the other visible/not visible at certain times. Out of the box neither control can see each other at all.
Is there a good article or someplace I can find some information on how to do this?
AllAboutFocus.com. Information Technolo...Use Web Control In a Web Control
Is this possible?I am working with an aspx page that consists of many different web controls.One of the web controls contains search criteria. One of the criteria is a date range where I am trying to add a popup calendar --> which is another web controlCan I register the popupcaledar control on the questionaire control? I have tried, but nothing seems to be registered.Any ideas will GREATLY help.Relax and have some Home Brew!Prosecute the Owner - Don't PERSECUTE the Breed!Breed Specific Legislation targets the WRONG end of the LEASH!
Without seeing your code we can'...web controls and web user control
i have a problem in a web form ,
I have a webform that contains a web user control which in turn contains a html input form ,the web control events don't fire up ,When I click button ,no effect ,I don't know what is the effect of the html form which is in the web user control on the web controls in the web form ??
can any one help me
the web control event should be handle in the code behind page, is the event handler for the button you are clicking registered? You can try double clicking the button, should give you the default btn_click event handler in code behind.
Also, make ...