Does anyone know how or where I can find a list of properties that can be defined in a skin file for standard ASP.NET controls?
Thanks
I believe that every property is, by default, Themeable. But, a number of properties are marked with the Themeable(false) attribute. For example, an asp:Button has its OnClientClick property marked Themeable(false).
Don't know how to get this list up front though. You'll get an error when you view a page and a Skin file tries to set a non-Themeable property.
In my experience, you can set all properties of all controls. I just made a small test, I found that it's even possible to define the items to be displayed in a ListBox in the skin file.
Related
In ASP.NET web forms when a control is rendered on the page, the ID of each field is modified with the ctrl01 as needed to ensure collisions don't happen (aka myField becomes ctrl01$myField or whatnot).
I was wondering where one might find details on HOW the algorithm itself works, or where it might be I can find it. I am assuming the INamingContainer has something to do with this-- but alas I cannot find the part which actually decides the rendered field name.
Any help would be awesome!
You are probably looking for this msdn article.
It's based on the hierarchical layout of the webpage. But you can control this with the ClientId property.
So a textbox in a usercontrol will be named ctrl01#textboxname (Like you said in your post)
It concatenates it's own name with your original id.
In ASP.NET 4 you can suppress this concatenation and keep your own id in three different ways:
Each server control has an attribute called clientIdMode which you can set to Static
You can also set clientIdMode in the page directive which will affect all controls on the page.
Or you can set it in the web.config to affect all controls in all pages. (Unless the page or control is set to a different clientIdMode
Note: If you are using AJAX Control Toolkit you will need to set those controls that are part of the toolkit to a clientIdMode of Predictive
Apart from the other answers, if you are using ASP .NET 4, you have much more control over it.
Take a look # these web pages
http://www.west-wind.com/weblog/posts/54760.aspx
http://weblogs.asp.net/asptest/archive/2009/01/06/asp-net-4-0-clientid-overview.aspx
More
I have this datalist in a user control i want when i keep mouse over "More", it should be invisible. it is working on .aspx page not on user control. How to do this. This control is placed on master page.
Please Help.
Probably it will be an issue with getElementById. In a naming container you cannot get the element by simply giving its id. You have to use ClientID to get the generated id of the element at runtime.
Something like
document.getElementById ( "<%= DataList2.ClientID %>");
See Control.ClientID Property
and
Control ID Naming in Content Pages
I would agree that it's probably an issue with trying to get the id of the element since the element's id changes at runtime when you put it inside a user control. You can run your code then do a view source in the browser and see exactly what the id is generating to at runtime.
Have you tried debugging the javascript mover() and mout() function? I am guessing you are looking for elements with the wrong id's since the id's are probably different inside a user control.
document.getelementbyid('txtbox') is not working when I used in content page as it is working in the normal web page. The value is null when it is used in contentpage. Plz anybody help me
The id will have changed, you can use something like:
document.getelementbyid(<%=txtTextBox.ClientID%>).value
or you can view the source to get the id in the hopes that it will not change again.
If you have the option I'd switch to some other engine, such as asp.net mvc where you have control over the HTML.
When the page renders, if the textBox is under another control, the Id tends to change.
You can use the ClientId property:
document.getElementById("<%= txtbox.ClientID %>")
Read this article
Control ID Naming in Content Pages
ASP.NET allows certain controls to be
denoted as naming containers. A naming
container serves as a new ID
namespace. Any server controls that
appear within the naming container
have their rendered id value prefixed
with the ID of the naming container
control.
Naming containers not only change the
rendered id attribute value, but also
affect how the control may be
programmatically referenced from the
ASP.NET page's code-behind class. The
FindControl("controlID") method is
commonly used to programmatically
reference a Web control. However,
FindControl does not penetrate through
naming containers. Consequently, you
cannot directly use the
Page.FindControl method to reference
controls within a GridView or other
naming container.
Master pages and ContentPlaceHolders
are both implemented as naming
containers.
I'm trying to limit the possible types of controls that can be put in to the templated area of a templated control in ASP.NET. Does anyone know how to do that?
/Asger
I'm not sure it makes sense to do this with a template, per se. A template is a property of type ITemplate. I suppose your designer code could attempt to limit what goes into the template, but that's really against the paradigm.
Perhaps what you want is to override the Control.AddParsedSubObject method, or else implement a ControlBuilder to get serious about it.
John,
Thank you very much for those pointers! That'll get me further.
I'm not quite sure, why it doesn't make sense though... for example inside a DataGrids column property only certain child-controls are allowed:
BoundColumn
ButtonColumn
EditCommandColumn
HyperLinkColumn
Any other control inserted in will cause compile errors: Error 4 Validation (ASP.Net): Text is not allowed between the opening and closing tags for element Columns'.
/Asger
In a particular page i have a ascx control which contains a table.
Now I want to set this control visible/invisible but the visible method is not detected by the intellisense.
The only methods are 1)Equals and 2) ReferenceEquals
Main Page
<VPM:VotingPolls Runat="server"></VPM:VotingPolls>
Thanks
Thanks it has been solved
The problem was that no id was set.
<VPM:VotingPolls ID="VPS" Runat="server"></VPM:VotingPolls>
then
VPS.Visible=True/False
Make sure that your markup is well formed and that there is a proper header line for the ascx control on your page. 99% of the time, if intellisense doesn't work, it means that something is wrong with the code and/or markup.
Sometimes intellisense doesn't display available attributes. But the visible attribute will be available. So just type visible='true/false'. That should work.