Way To Add Ajax To A .net Site Which Has No Form Tag With Runat Server
Jan 28, 2010
I have to add some ajax to a site, and i can see that in the master page they are using traditional tag <form id="form1" action="ExternalSite.com?a=b" name="test">and I get a tag incorrectly formed when I add a runat="server" within the form tag - but without it I can't have a valid scriptmanager?
Since upgrading to VS2010, I've been having issuse up on issues with my apps. Some are pure asp.net web sites, other are webpats that are eventually be converted to a Sharepoint web part.
In one of these webparts, I'm building a tab control on the fly. It fetches data from the table via bll/dal. On my dev box I build this in the code file of the default.aspx file and rendering it in a panel, except that it get the said error. I'm quite sure this is how I've done it in VS2008, so I don't know what is going on here - see my code below.
I've got the ImageButton wrapped inside a form tag with runat="server" but STILL getting this error at runtime. The form tag is at the very beginning (before my table) and end tag is at the end (after the table).
I have a user control that employs many other controls (GridView, Images, Ajax Tool kit extenders, etc.). When called the RenderControl() method there is the dreaded "<control> must be placed inside a form tag with runat=server". Seems many people have run into this and suggest overriding erifyRenderingInServerForm on the page the control sits in. I tried to do this, but ran into other issues (for example the ajax control tool kit calendar extender started to complain about the extender not being registered properly).
When a form with a run at server is added there will be two forms with runat server and another error occurs.The details of the error are as follows.Control 'ctl00_TextBox1' of type 'TextBox' must be placed inside a form tag with runat=server.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.HttpException: Control 'ctl00_TextBox1' of type 'TextBox' must be placed inside a form tag with runat=server.
Source Error:An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace: [HttpException (0x80004005): Control 'ctl00_TextBox1' of type 'TextBox' must be placed inside a form tag with runat=server.] System.Web.UI.Page.VerifyRenderingInServerForm(Control control) +2052287
Version Information: Microsoft .NET Framework Version:2.0.50727.1873; ASP.NET Version:2.0.50727.1433
I'm trying to upload files to Amazon. In their simple example, it's an HTML page with a bunch of hidden fields that pass the data needed. The problem is when I create that form in ASP.NET, I, inevitably, end up with a few extra hidden fields i.e. __VIEWSTATE and __VIEWSTATEENCRYPTED at the very least -- and that after setting EnableViewState to false on the page. No matter what I do, these two hidden fields are there. I've read some articles that indicate that I have no way of removing them from the page unless I can remove the <form runat="server"> all together.
I can imagine what the answer will be but I have to ask: is there a way to remove the form tag from an aspx page?
I assume the answer will be "No". Then my follow up question is: how am I going to upload a file to Amazon S3 using an aspx page?
Now, some may suggest that I should use a simple HTML page. Then my issue would be this: there are a whole bunch of parameters I need to get by making an API call first -- they're the ones that end up in those hidden fields. How can I upload my files without losing this server side functionality that I need in order to make the API call?
Here's what that upload form looks like -- according to Amazon:
I am a bit confused about the significance of the <form runat="server"> on a page, and its effect on Page and Control life cycles.
For long, I have eliminated any Postbacks or Viewstate from my web forms. I just use web forms to render (often very very complex) UI to the client (composed of server-side controls as well as ExtJs or jQuery widgets etc).
After the UI renders, all interaction with server is asynchronous through web-services or http handlers. So, lately I have started omitting the <form runat="server"> tage also from my web forms.
And to my surprise, the code has NOT broken. The life-cycle events are generated normally on all controls, they have access to normal ASP.NET processing pipeline, and they render perfect;y. As there are no Postbacks, I do not need ViewState or control events like click etc.
So, can somebody tell me if there's any material difference that <form runat="server"> would make in my scenario, or to ASP.NET page/control life-cycle??
Im using ASP.NET 2.0 with C# for website development. I have created two master page Base.master and web.master.web.master refer to base.master as its master page. Base.master contains head(specified various CSS links) and body(some general controls and hyperlinks to other websites).Now i create test.aspx with web.master as its master..Now I try to implement ajaxtoolkit:calendarextender which initially gave me error that head tag should have runat="server"..This error got resolved but i lost CSS of my website and also calendarextender doesnt work. calendarextender works fine if I dont refer my master page.
I don't loose my CSS and calendarextender should work as normal.refer text.aspx
When I use an anchor tag on an aspx page as below,
<a href="~/pages/page.aspx?id=<%= ServervariableName %>"> test </a>
it will get the variable value correctly assigned to id but it won't route the page correctly as the ~ will not be evaluated without the runat="server" attribute on the 'a' tag. But once I add the runat server attribute, it does not evaluate the servervariable name anymore.. how this works or what I should do to take care of both?
This is simple because it goes right to the code behind page and set the text value to the value returned from my database (aside from going into more details with data access layer, etc).
What I was wondering is what if I dont want to use an ASP.net linkbutton and I simply want to use an HTML link button (as I need to call the jquery fade function). How would I set the value someValueReturnedFromADatabase to a control that is not runat=server?
I have created a new Web project (.Net 3.5) and I've removed the original Default page in favour of creating a Master page and then recreating a Default with Master page. All worked lovely. Now, when I add my controls inside of the ContentPlaceHolder on the Default page, I get compiler errors when I try to access the controls from the CodeFile:
Error 4 '_Default' does not contain a definition for 'FirstName' and no extension method 'FirstName' accepting a first argument of type '_Default' could be found (are you missing a using directive or an assembly reference?)
I have a simple asp.net web page that contain a table with about 5 TR and each row have 2 TD .. in the page load I get user data ( 5 property ) and view them in this page the following are first 2 rows :
I always used <asp:Label to set value by code but i always notice that label converted in runtime to span so i decided to user span by making him runat=server to be accessed by code, so Which is better to use asp:label or span with runat=server?
I am working on Asp.net 2.0.I have 1 problem.In my design <table ><td> <tr> structure is present.<table><tr>< td id="PanJan""< d>< r>< able>runat="server" is not use in this. How to find td, tr , table id when runat server property is not used.