Web Forms :: Calling Code Behind From Aspx?
May 5, 2010
I often want to call a function in the code behind using the "<%# ... %>" syntax. Sometimes is works and sometimes it doesn't. It is also a difficult syntax to search for. Can someone point me at an explanation of the working (or not) of this syntax?
I just tried this:
<asp:TextBox
ID="TextBox1"
runat="server"
Text="<%# getBCSConnectionString() %>"
></asp:TextBox>
For example. The function is in the code behind (it returns a string). The TextBox is empty and no break point is hit in the function; it does not appear to be called.
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Jun 20, 2010
Regarding the above topic I want to know the following:
1) Is it possible to call the exe from an aspx page with or without parameters?If so client side call or only server side call?
2) What permissions need to be given for it to be accessible - the exe needs to do data transfer with postgres?
3) How to diaplay the output of the exe on the client side in Labels or alert boxes?
Any other problem that may occur while executing exe from the aspx page?
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Sep 6, 2010
I was wondering if I can create a method or textbox in an .aspx page (such as 'Default.aspx') and from a different class (e.g 'MyClass.vb') insert values into the textbox?
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Mar 9, 2010
I have a code behind which i need to call from the aspx page. Below is the the code in aspx and code behind.
aspx:
<a href='<%# ChangeAlphabet("0") %>' >All</a> </li>
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Mar 10, 2011
I have an web application in a server.there is an aspx page i need to call an aspx page with new window using response.write().
ex: Response.Write("www.abc.com/page1.aspx");
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Jun 16, 2010
This is such a simple thing but i can't figure it out.
I have this code: (just a section)
[Code]....
[Code]....
Here is the code behind:
[Code]....
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Jun 17, 2010
I need help calling a web service asynchronously. Current scenario is, I have a classic ASP page which does some processing and then redirects to a ASPX page which would call the wcf service asynchronously and then redirect to another classic ASP page. Im currently using the Asynchronous method to call the service with Async="true" included in the header. Testing the ASPX page induvidually it appears that the service call is asynchronous and does not wait for the the service to process data. But when integrating it with classic ASP page i.e ASP to ASPX to ASP it appears that the process takes a while as if the service call is synchronous.
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Apr 17, 2010
I have a function that returns an image name from an Array, and takes the array index as a parameter, something as follows:
public string imageGallery(int imageNumber)
{
return "~\webForms\profileAdmin\uploadedImages\serkijn\" + iArray[imageNumber].ToString();
}
On the aspx page I have something like this:
<img src='<%# imageGallery(0) %>' />
[Code]...
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Sep 7, 2010
I have a problem with calling a method on a aspx page from a usercontrol.
The case is: I have 1 main page with 5 usercontrols, when something goes wrong in the code I want to display the error message in a Modalpopup Extender. I can create for each usercontrol a different modalpopup extender but isn't much easier when I make 1 popup in the aspx page. But the problem is: How should I call a method in the aspx page that open the popup?
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Dec 2, 2010
Is there a way to call a public function from a class?
[code]....
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Jun 30, 2010
I have been trying to call a vb.net function in aspx page how can i do that?. I have done it in C# by
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and trying to convert (rptpages is a repeater)
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Jul 2, 2010
I put common code in the app_code directory. I access classes in the code all the time from aspx.cs files by "using" the name space from the C# file in app_code and then referencing the class. Now I want to access a class from an app_code file a aspx file. How do I do this?
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Jan 4, 2010
<head><script type="text/javascript">
var sillyVarible = 1;
</script></head>
id like to assign the above varible through and on click event from the .aspx.cs page..
how would i do it ? (not the on click just the varible call/assign from back end to front.)
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Jan 13, 2010
I can't write in english well, but I must try to have an answer for my problem.I have a problem that I have not found a solution, regarding the integration of C # code in the HTML code .aspxI want to do a loop on the
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Here is a moceau of my code:
[Code]....
This code gave me this error:
Message d'erreur de l'analyseur: 'TabPanel_<%= idMagasin %>' n'est pas un identificateur valide.Translation: Message parser error: 'TabPanel_ <% = idMagasin%>' is not a valid identifier.I removed idmagasin like this:
[Code]....
System.ArgumentException: Une entrée avec la même clé existe déjà .
Translation:
System.ArgumentException: An entry with the same key already existsThe result is that I found a great problem to insert a C # code in the HTML code .aspx unlike others languages like PHP.
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Feb 8, 2011
I've done a search and read a few things, All i'm trying to do is set a variable in the code file and call it in the page file asp.net vb.net 3.5. I've tried like this in the code file:
[Code]....
And in the design part of the page:
[Code]....
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Apr 1, 2010
i wrote some code in application start event in global.asax page...
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Feb 9, 2010
I would like to use methods in the RDLC designer from external sources. How can I reference an external method say for a complex calculation in a field? The internal vb code is not robust enough.
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Nov 25, 2010
I wrote many Dataset in APP_CODE folder and call it in my ASPX Page. But the following error Occured in my aspx Page when i call atset.
ERROR
'DATASET NAME(.XSD)' does not contain a definition for 'DATASET OBJECT NAME' and no extension method 'DATASET OBJECT NAME' accepting a first argument of type 'DATASET NAME(.XSD)' could be found (are you missing a using directive or an assembly reference?)
But when i Build the application some times it's execute with out error. but some times it show's an error. And also i get error in different
dataset in every time when i Re-build the application.
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Feb 4, 2011
I have this Rijndael algorithm below as class and my problem is when I tried to call this class from Code behind page the methods inside this class is not appearing with me
[Code]....
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Feb 17, 2011
I have a .aspx page that has a button on it.When the user clicks on the button, it should call another .aspx page. I am using the following javascript code that works well in our development region. But when it is deployed to another IIS server, it doesn't work.
Code:
function Open_HistoricalRunswindow() {
window.open("http://10.129.1.102/QAWebUI/HistoricalRuns.aspx", "_blank", "toolbar=no, location=yes, directories=no, status=no, menubar=yes, scrollbars=yes, resizable=yes, copyhistory=no, width=1000, height=500");
}
I replaced the IP address with the word localhost and it didn't work either.For some reason, when the user clicks on the button, it opens up another browser window and the address seems to be like this. which is very weird.[URL]I don't understand why the link is getting messed up? Is there any alternate solution for this problem? May be I use server code to call the .aspx page instead of Javascript?
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Jan 5, 2011
i have 2 forms 1 html others is asp.net in vs 2005 now i want on html page is whn i click on submit button asp.net page is called <action="abc.aspx" method="post"> but its not working
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Nov 23, 2010
How do you call a codebehind/class method from a gridview in an aspx page? Also, I need to pass the value of databound column to that method. Is this possible?
Something like this:
<asp:BoundField DataField="Precision" />
<asp:BoundField DataField="MyNumber" DataFormatString="FormatHelper.Format(MyNumber, Precision)" />
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Jul 15, 2010
I'm calling a silverlight component in my aspx page like this
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
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I would like to modify my page aspx so it takes the parameter itself. Today I'm calling the page
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Config.aspx?ConfiguredCarId=11
How do I modify the above code to reflect the change?
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Nov 1, 2010
I have a 'classic' ASP.NET app (.NET 3.5) with a pretty standard runat="server" style form with server-side controls and an 'Execute' asp:button. In the code-behind, the executeButton_click handler processes some of the other controls, runs a report, and drops the result into an asp:label. So the effect of pressing the Execute button is that the entire page reloads with the report inserted into the label.
I need to change this so that when the Execute button is pressed, the report pops up in a new window with a different layout (ie without the controls and form). If I was doing this in an MVC framework I would just change the view template in the 'execute' action, so the analogue for ASP.NET would be change the code in front, ie the .aspx file that gets used, from the code-behind class.
Is this possible? I know the link between the .aspx and the .aspx.cs isn't extremely tight as it is possible to reuse a code-behind class in multiple .aspx files. So can I set the .aspx file to render from the code-behind?
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May 29, 2010
i have to give the user the option to upload his own aspx and aspx.cs files on to the server, adjust the hyperlink to point to a page which would do the following display the aspx and aspx.cs files code onto the page without actually rendering the code the browser should not understand anything, and while reading the files to display them the method be such that nothing is processed on the server regarding the code within the files to prevent from unnecessary problems many user would try to cause.
i have tried many ways of displaying it but it ends up on displaying the actual comments instead of the code. how to achieve the above. note main concentration is on asp.net and c# using vs08, so j script and ready-made tools be avoided if feasible
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