Web Forms :: Invalid XHTML Markup Using ItemCommand In ImageButton?
May 20, 2010
I'm using an ImageButton inside a repeater with an ItemCommand. The repeater is used as a trigger to an UpdatePanel. The XHTML generated puts an 'ItemCommand' attribute in the <input> element corresponding to the ImageButton. This causes XHTML validation (using the W3C validator) to fail, because ItemCommand isn't a valid attribute for input.
I've Googled and found nothing about this, and the MSDN page assures me that asp.net generates perfect XHTML.
You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
I am generating xhtml in code that is then inserted into the page. Are there class(es) that help with adding tags etc. Then having a function that will output it to a string. (like the xml dom api) code like:
I have a GridView whose datasource is set programatically. The sorting is also handled in code via the OnSorting event of the GridView.Since I'm stuck in crappy dotnetnuke, I've had to change the doctype of the skin to XHTML Transitional so that the AjaxControlToolkit would work properly with IE.fter doing this, the sorting of this GridView stopped working... if I remove the doctype change file, it goes back to working again.I can tell that the event is firing, but it is now unable to find the underlying DataSource of the GridView to have something to sort. My OnSorting event follows; whenever it is fired, the "Data Source not Found" message is displayed.
I need to be able to remove non-XHTML tags from a string containing XHTML that has been stored in a database. The string also contains references for controls (e.g. ) inside the XHTML, but I need clean XHTML with all standard tag contents unchanged.
These control tags are varied (they could be any ASP.NET control), so there are too many to go looking for each one and remove them. The way they are closed is also varied, so not all of them have closing tags, some are self closing.
How can I go about doing this? I've found some HTML cleaners on-line for including in my project, but they either remove everything or just HTML encode the entire string.
Also, I'm dealing with parts of XHTML documents, not entire documents - don't know if that makes a difference.
An example (not fantastic, but gives you the idea of what I'm working with):
<p><mycontrols:mycontrol myproperty="hello world" myproperty2="7"><SPAN><a href="#"><img title="an example image" height="68" width="180" alt="an example image" src="images/example1.gif"></a></span></mycontrols:mycontrol><a href="#"></a></p>
I have two submit buttons, 1 on a search control with its own ValidationSummary/Group and another in a Datalist Item.When I submit the search button and validation errors occur, I must hit the "add to cart" button on the DataList item that was generated from a previous successful search twice in order for the ItemCommand event to fire.I have different validation groups specified for the two submit buttons.
I have imagebutton inside datalist.....the problem is that onclick event of serverside not get executed for only IE ..but its work fine for mozzila....i m not getting what wrong in this code.aspx code
i am doin project with xforms but i keep on getting an error which says tht the xhtml 1.0 does not support the xform elements i tried putin al tht necesary namespaces for xforms but am still getting the error..
I want to make a flower shop using the technologies mentioned in the title. I was thinking about customer/admin login in ajax. I'm using Visual Web Developer 2008 Express and I know a bit of VB.
The attribute is not rendered to the client, even when the custom namespace is declared in the html element like: <html xmlns= [URL] Does anyone know of a way to get this to render to the client, without having to use a custom control. A module or other globally "pluggable" solution would be acceptable.
How do I disable the DataGrid controls in ItemCommand using VB.For Example I have dropdownlist bound in my DataGrid. Now I want to Disable this control in Datagrid_ItemCommand.I tried like this
I seem to have come upon an issue with XHTML 1.0 Strict compliance and ASP.NET AJAX. When a ScriptManager is included on the MasterPage, it renders the following tag:
In order to be XHTML Strict compliant, this tag must be included in a <div>, as is the VIEWSTATE. Even when Strict compliance is enabled in the web.config, the ScriptManager insists on rendering in a non-compliant way. This is currently blocking our transition to Strict mode, as it's the only non-validating tag on our pages.
I am sure this question has been asked and answered; but I haven't managed to find it...
I am creating a very simple custom System.Web.UI.Control that has a few properties. I can define in my ASPX page the following tag and everything is happy:
what I need to do to make the XHTML validate. I always have
Content is not allowed between the opening and closing tag of element 'XXX'
Element 'XXX' is not supported
The name contains uppercase characters, which is not allowed
The code actually runs as expected, but I haven't manged to find a good example on how to do this correctly so that everything validates. In terms of implementation of the Custom Control, I just have all properties stubbed out at the moment, and looks something like:
[ParseChildren(true)] [PersistChildren(false)] public class MyControl : Control[code]....
Ultimately, Element is intended to build up a collection of Elements. Any insight on how to do this properly and have the XHTML validate
I have a checkbox inside the item template of a datalist, dtlLate. I want to detect the checkbox change and execute a stored procedure. When I click the checkbox a postback does occur but the dtl Late itemcommand doesn't fire. I am not rebinding the datalist on postback. I have tried with viewstate enabled and disabled. I have used Bold text for the dtlLate in the content page and in the codebehind to make it easy to find.
I have a datalist in my page that has a LinkButton at the beginning of each row that, when clicked, fires the Itemcommand ("select"). There is no issue with this as it works as it should:
[Code]....
But I also thought it would be good if the user could simply click anywhere in the datalist to expand the item and show based on the SelectedItemTemplate. So, I thought, the cleanest would be to add a function in the code behind that adds a click event to the Panel "panItem" that clicks the above mentioned LinkButton like this (fires in Page_PreRender):
[Code]....
Here is where the problem comes in. This works great in IE but not FF3.6 (havent tested it with older version of FF). In FF, I get a JS error saying "dlMapDB_ctl00_btnItemFigNumber is not defined" for the first row, "...ctl01..." for the second row, etc. So the IDs are correct based on the markup (which makes sense since it works in IE).
I have a repeater which does quite expensive processing when it is populated. It gets the info from a web service which is itself a federated search service and will take 15 to 20 seconds to return results.
In each repeater item/alternatingitem, i have 3 imagebuttons doing some actions (saving in session some ID's, updating some custom collections...) , the problem is when clicking on one of the buttons, the repeater will trigger the command and then databind again, which takes quite some time to process again..
I have a details view to insert some data. I want to validate this data myself. use the ItemCommand to trap the insert command. If the data entered does not match what I need, I want to somehow stop the insert procedure at this point.
Events an ItemCommand event that uses the DetailsViewCommandEventArgs event arg class which has a CommandName property.
My questions are...
What are the possible values (e.g. "Select", "Insert", etc.) for this CommandName property when operating a standard, uncustomized DetailsView control?
The "ing" events are currently being intercepted so that if the user doesn't have permission I set the e.Cancel = true and the "ed" events have redirects to send the user back to a list page that shows the items they just added/updated/deleted. However, I am not able to capture the Cancel button on the DetailsView control since there's no event for it. What I want is to redirect the user back to the list page if they click on Cancel as well.
I'm looking for an ASP.NET control that renders a tree structure, very much like the ASP.NET TreeView control, but filling the following requirements:
Dont uses tables for rendering tree structure. Markup Adhering to valid XHTML 1.0 Strict. Works with AND without javascript.
Also, if the control is licensed under a MIT och GPL licens that would be great, but commercial controls is also of interest.
Do anyone know of any such control? If not, well, then I'll simply have to write the control myself. More fun in my own opinion, but likely more time consuming.
I've got a GridView control with LinkButtons in different cells. Currently when someone clicks a link, it fires the ItemCommand passing the CommandName and the ID of the item the link is bound to. That all works fine. I need to modify it now to not use links anymore. It now needs to show a popup balloon with a link (styled to look like a button) and when the link is clicked, I want it to do the exact same thing. I'm sure there are several ways of doing this, but for time's and consistency's sake, I'm copying the method used from another page we have that is already doing this. It has a hidden DIV on the page with the link in it. When you hover over a link, javascript repositions the div and makes it visible.
So what I need to do is pass my CommandName and item ID to the javascript so that it can trigger the postback when they click that single link. I know this is not the only way to get to the end result, but what I want to do if possible, is still fire the GridView's ItemCommand and set he DataListCommandEventArgs' CommandName and CommandArgument properties. Can someone explain how, under normal circumstances, clicking the LinkButton in the GridView fires the ItemCommand? I know that the LinkButton's click event is forwarded to the GridView but what gets sent from the client side that let's the server know the link was clicked?
