Is there a way I can dynamically register an IHttpHandler in C# code, instead of having to manually add it to the system.web/httpHandlers section in the web.config.
This may sound crazy, but I have good reason for doing this. I'm building a WidgetLibrary that a website owner can use just by dropping a .dll file into their bin directory, and want to support this with minimal configuration to the web.config.
I have an website in IIS 6.0 (windows 2003). Inside that I had configured another application (As IIS Application).
Now, When I uncommend a "add verb" tag in main web.config file, the webservice inside the application throws "404 file not found exception" Is there anything which I need to update in child web.config?
I have the following text in web.config file in ASP.NET 3.5:
<httpHandlers>
<add verb="*" path="CaptchaImage.aspx" type="AspCaptcha.CaptchaHandler, AspCaptcha"/>
</httpHandlers>
I'm learning ajax and have created some pages and practiced using the ajax controls. I’m using visual studio 2007 on a windows xp machine with .net 3.5 . The site I’m practicing with is the ajax sample web site that I’ve downloaded. I’m just adding pages to this site as practice. Using a tag prefix of ajaxToolkit
Code:
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>
I have read serveral sites that you can register the assembly and the tag prefix by placing code in the web config, so Between the assemblies Tags of the we congif I entered
Code:
<add assembly="AjaxControlToolkit, Version=3.5.40412.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e"/>
And between the <controls> tag the web config I added
Code:
<add tagPrefix="ajaxToolkit" namespace="AjaxControlToolkit" assembly="AjaxControlToolkit, Version=3.5.40412.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e"/>
This didn’t work because when an ajax control is added from the toolbox get asp tag
Code:
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:ComboBox ID="ComboBox1" runat="server">
</asp:ComboBox>
I am in the process of moving all of the images in my web application over to a CDN but I want to easily be able to switch the CDN on or off without having to hard code the path to the images. My first thought was to add an HttpHandler for image extensions that depending whether a variable in the web.config (something like ) will serve the image from the server or from the CDN. But after giving this a little though I think I've essentially ruled this out as it will cause ASP.NET to handle the request for every single image, thus adding overhead, and it might actually completely mitigate the benefits of using a CDN.
An alternative approach is, since all of my pages inherit from a base page class, I could create a function in the base class that determines what path to serve the files from based off the web.config variable. I would then do something like this in the markup:
<img src='<%= GetImagePath()/image.png' />
I think this is probably what I'll have to end up doing, but it seems a little clunky to me. I also envision problems with the old .NET error of not being able to modify the control collection because of the "<%=" though the "<%#" solution will probably work.
I seem to be having a problem with my visual studio 2005/2008 installation or something because it isn't providing any IntelliSense whatsoever for controls registered on web.config files in folders different from the root, but it isn't showing any errors neither. Is this behavior normal?
I have access only to the folder of my sub-app, so I can't modify the root's web.config file. Well I COULD, but I'm NOT allowed to.
What I'm trying is to register some WebUserControl's on the web.config file for sub-app folder, so all the pages in my sub-app can use the WebUserControl's without having to register them on every page, but I'm not getting IntelliSense for those controls registered on the web.config file on my sub-app folder, but I do get IntelliSense if I register them on the root's web.config file. IntelliSense for everything else appears to be working fine.
In the web.config file on my sub-app folder I have something like the following:
[code]....
am I doing something wrong?
Update Now I have upgraded to VS2008 SP1 and the issue persist
I have one custom control. I add reference to it on ASPX pages like this:
<%@ Register TagPrefix="cus" Namespace="Controls" %>
at run time there is no error.
Error shown at deploy time
Unknown server tag 'cus:GridHeaderFilter'.
My custom control is in App_Code folder with name GridHeaderFilter.vb
So how to add or register this custom control in web.config file
Considering the recent ASP.NET vulnerability, what should I look for in my httphandlers that would cause such a Padding Oracle vulnerability?
Asked in another way... what did MSFT do wrong and what did they fix in their handlers?
I have some usercontrol which gets loaded dynamicaly. I know how to add these usercontrols dynamically. The problem is, which usercontrol are to be added is decided only at runtime. So I cannot use <%@ register %> or <%@ Reference %> on the '.aspx' page. How to access the usercontrols without using these directives?
View 4 RepliesI having a dynamic build html table from jQuery and trying to attach the click event to it..How can I register that event on table and what to do with the function that looking for the table tr id and can't find it.I prefer not to write the click function as text as well with the tbl if possible, and not to write some of the table on the html body if possible - so all the table will be build from the innerHTML
[Code]....
--> now i did tried this..
[Code]....
I have a page that contains a custom tab control. When you click different tabs, it does a an ajax callback. During that ajax call, the code dynamically loads a different control based on which tab was clicked, then adds it to the appropriate tab. So basically I have some code that does a switch statement, uses LoadControl(), then adds the control in.
The issue I'm having is that none of the javascript within each of those controls that gets loaded is getting registered on the page. Based on this thread:
[URL]
I thought I just had to switch from using Page.ClientScript.RegisterClientScriptBlock to ScriptManager.RegisterClientScriptBlock. I did that, but still nothing. Am I misunderstanding something about the ScriptManager? I want the javascript to be registered from within the dynamically loaded control, which happens to be loaded during an AJAX call.
with this code website works perfect
<configuration>
<system.web>
<httpHandlers>
</httpHandlers>
</system.web>
</configuration>
but when I add
<add path="ThumbHandler.ashx" verb="*" type="Delshad.WebControls.ThumbHandler,Delshad.ThumbPic"/>
or
<add verb="GET" path="CaptchaImage.axd"
type="MSCaptcha.CaptchaImageHandler, MSCaptcha" />
in httphandlers section when I go in my site it is only a blank page!
before In other two host there wasent problem but this is a new host and I face with this problem.also in local there isn't any problem.
I'm trying to take an existing bunch of code that was previously on a full .aspx page, and do the same stuff in a .ashx handler.
The code created an HtmlTable object, added rows and cells to those rows, then added that html table the .aspx's controls collection, then added it to a div that was already on the page.
I am trying to keep the code in tact but instead of putting the control into a div, actually generate the html and I'll return that in a big chunk of text that can be called via AJAX client-side.
HtmlTable errors out when I try to use the InnerHtml property (says it isn't supported), and when I try RenderControl, after making first a TextWriter and next an HtmlTextWriter object, I get the error that Page cannot be null.
I have a Asp.Net control inside a updatepanel thet is inside a modal popup. I wont to register write javascript code in client from the control code.
these is my code:
Dim output As String = .. javascript code
Page.ClientScript.RegisterClientScriptBlock(Me.GetType(), "frmulaMatrix", output, True)
these is my second thinf but dont work
Page.RegisterClientScriptBlock("SCRIPTNAME", "<script language='javascript'>" + output+"</script>")
We have encountered this difference in file creation while using a HttpHandler Versus a Code Behind Aspx page. We are reading a saved jpg/png picture as byte array from a 'Image' field in sql server database and create a physical file in the server. Both the Aspx Page and Httphandler use the same code pasted below.
//Begin
int docID = Convert.ToInt32(Request.QueryString["DocID"]);
var docRow = documentDB.GetDocument(docID);
// Retrieve the physical directory path for the Uploads subdirectory
string destDir = Server.MapPath("../../Uploads").ToString() + "\";
string strFileName = destDir + DateTime.Now.ToFileTime() + "_" + docRow.DocName.ToString();
FileStream fs = new FileStream(strFileName, FileMode.CreateNew, FileAccess.Write);
fs.Write(docRow.DocData, 0, docRow.DocData.Length);
fs.Flush();
fs.Close();
// End
After the file is created, it is viewable as a jpg/png Image only in Aspx Code Behind. While in case of HttpHandler it is not a valid Image.
I have just started using MVC2 in VS2010, and I noticed that on the Register page DataType.EmailAddress doesn't actually do any validation, so it does not check whether or not the Email Address entered is valid. Should I write some email validation code in the HttpPost Register method of my AccountController, or is there another way to do this?
View 1 RepliesI 'm learning ajax and have created some pages and practiced using the ajax controls. I'm using visual studio 2007 on a windows xp machine with .net 3.5 . The site I'm practicing with is the ajax sample web site that I've downloaded. I'm just adding pages to this site as practice. Using a tag prefix of ajaxToolkit
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>
<add assembly="AjaxControlToolkit, Version=3.5.40412.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e"/>
<add tagPrefix="ajaxToolkit" namespace="AjaxControlToolkit" assembly="AjaxControlToolkit, Version=3.5.40412.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e"/>
<asp:ScriptManager ID="ScriptManager1" runat="server">
[code]...
i just came up with the reading, Writing and adding values dynamically in web.Config in asp.net. Have many ideas in mind, but i just wana know what is the best way of adding values in web config dynamically.
for example in my case i have to add
<identity userName="someDomainUser" password="password" impersonate="true" />
in tag in web config from code behind.
I have the following in my web.config
<connectionStrings>
<add name="ActiveDirectoryConnection" connectionString="LDAP://ActiveDirectoryDomain1.com" providerName="System.Web.Security.ActiveDirectoryMembershipProvider"/>
</connectionStrings>
I need to add a dropdown box to my login page that allows the user to change the connectionString to a different string, e.g. "LDAP://ActiveDirectoryDomain2.com"
In C# code behind how do change the connectionString value?
More info:
The problem I am having is that there are 4 other web.config settings call that one connectionString. For example:
<activeDirectorySecurityContextSettings connectionStringName="ActiveDirectoryConnection" defaultADUserName="ReportUser" defaultADPassword="password"/>
I have created a code which updates the sessionState timeout on certain conditions, but when I run this code, it asks for saving the web config file. I think its because writer.flush() or writer.close() code. Can anyone help me on how to save the web.config file @ runtime. ??
View 1 RepliesIs it possible to change web.config file at run time...
(here i want to change database connection details at run time)
Is there a way to use a generated file as a configSource for a web.config section?
In web.config, I tried a simple:
<webParts configSource="webpartsConfig.aspx" />
where webpartsConfig.aspx just spits out XML when accessed normally, but not as a configSource. (The literal source code is included as-is, giving an error.)
Motivation for this solution: I have different configuration variables locally and online, and I don't want to juggle multiple config files.
The basic idea is we have a test enviroment which mimics Production so customErrors="RemoteOnly". We just built a test harness that runs against the Test enviroment and detects breaks. We would like it to be able to pull back the detailed error. But we don't want to turn customErrors="On" because then it doesn't mimic Production.
I've looked around and thought a lot, and everything I've come up with isn't possible. Am I wrong about any of these points?
We can't turn customErrors on at runtime because when you call configuration.Save() - it writes the web.config to disk and now it's Off for every request.We can't symlink the files into a new top level directory with it's own web.config because we're on windows and subversion on windows doesn't do symlinks.
We can't use URL-Mapping to make an empty folder dir2 with its own web.config and make the files in dir1 appear to be in dir2 - the web.config doesn't apply. We can't copy all the aspx files into dir2 with it's own web.config because none of the links would be consistent and it's a horrible hacky solution.
We can't change customErrors in web.config based on hostname (e.g. add another dns entry to the test server) because it's not possible/supported. We can't do any virtual directory shenanigans to make it work.
If I'm not, is there a way to accomplish what I'm trying to do? Turn on customErrors site-wide under certain circumstances (dns name or even a querystring value)?
I'm using sql dependent caching in my ASP.NET application, and to achieve this I have the following entry in the web.config:
<connectionStrings>
<add name="DatabaseName" connectionString="Data Source=.Dev;Initial Catalog=DatabaseName;Integrated Security=True" />
[code]...
I have three connection strings in my web config file one for developement db, test db, and production db.
Currently I have all three defined and using the same name and I comment out the connection out the
inappropriate strings.
So in my code I use the connection string like so:
WebConfigurationManager.ConnectionStrings(
"A_DevConnectionString").ConnectionString
and in my Web.config I have three conn strings :
a_devConnectinoString
a_testConnectionString
a_prodConnectionString.
Can the connectionstring be selected dynamically through the web.config ?