I have a strange situation using asp ajax chart controls. I have an application which is attempting to display a chart on an aspx page. Here are a couple of snippets from my web.config -
<appSettings>
<add key="ChartImageHandler" value="storage=file;timeout=20;dir=c:\temp\;"/>
</appSettings>
...
<httpHandlers>
<add path="ChartImg.axd" verb="GET,HEAD" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>
</httpHandlers>
...
<handlers>
<remove name="ChartImageHandler"/>
<add name="ChartImageHandler" preCondition="integratedMode" verb="GET,HEAD" path="ChartImg.axd" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
</handlers>
When I run the application through the VS2010 IDE, I am getting the following error when trying to display the chart -
Parser Error
Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.
Parser Error Message: Unknown server tag 'asp:Chart'.
However, if I deploy it to my server, it seems that the chart cannot be found (an outline where the image would be appears with the red X saying that the image cannot be found).
The difference is that I am running the IDE from windows xp 32bit machine, and the server I deploy to is a 64bit Server 2008 machine running IIS 7.
Does anyone have any idea why I might be having these problems?
Thanks for any thoughts.
In the web.config <controls> section add the following:
<add tagPrefix="asp"
namespace="System.Web.UI.DataVisualization.Charting"
assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
Or you can register the controls on the page you are using them.
Related
On my local machine it's working but it's not working on server
error is showing like this
Parser Error
Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.
Parser Error Message: Unknown server tag 'asp:Chart'.
Source Error:
In the web.config section add the following:
<system.web>
<httpHandlers>
<add tagPrefix="asp"
namespace="System.Web.UI.DataVisualization.Charting"
assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
</httpHandlers>
</system.web>
Check if the assembly is installed on the server, and check if your web.config on the server includes the control assembly and namespace in the <controls> section.
For instance
<add tagPrefix="asp"
namespace="System.Web.UI.DataVisualization.Charting"
assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
Check this link for more details, charts for MSDN - http://msdn.microsoft.com/en-us/library/vstudio/hh297118(v=vs.100).aspx
Try the below code:
just to remove the following entry from web.config section:
<httpHandlers>
<add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler,
System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral,PublicKeyToken=31bf3856ad364e35"
validate="false" />
</httpHandlers>
Also make sure that section has the following:
<handlers>
<remove name="ChartImageHandler" />
<add name="ChartImageHandler" preCondition="integratedMode" verb="GET,HEAD,POST"
path="ChartImg.axd" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler,
System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</handlers>
I've encountered an odd problem: I'm trying to migrate an ASP.NET 4.0 website to an ASP.NET web application. Visual Studio's "Convert to Web Application" function actually worked quite nicely, but the only thing that's not working are the references to charts. I'm getting the error:
The type or namespace name 'Chart' does not exist in the namespace
'System.Web.UI.WebControls'
From the .designer file. The designer is automatically creating this type of code:
protected global::System.Web.UI.WebControls.Chart ClientHoursPie;
Based on research I have done, the proper 4.0 namespace to use for charts is System.Web.UI.DataVisualization.Charting. I have added the following components in the web.config (copied from the original website, which was working fine):
<httpHandlers>
<add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>
</httpHandlers>
<compilation debug="true" targetFramework="4.0">
<assemblies>
<add assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</assemblies>
</compilation>
I can correct the namespaces in the designer files but each time the aspx file is saved, the designer reverts back to the old namespace.
I would love to avoid having to rebuild all of the individual pages from scratch. Is there a setting somewhere that I've missed?
Thanks in advance.
I was able to solve the problem by adding a few entries to web.config that I had missed. Anyone experiencing this problem needs to make sure you include:
<pages>
<controls>
<add tagPrefix="asp" namespace="System.Web.UI.DataVisualization.Charting" assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</controls>
</pages>
And this (in system.webServer section):
<handlers>
<remove name="ChartImageHandler"/>
<add name="ChartImageHandler" preCondition="integratedMode" verb="GET,HEAD,POST" path="ChartImg.axd" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
</handlers>
I have an application that relies heavily on charting and currently the charts will work in the ASP.Net Development Server, but when I try to publish out to my server (Win 2008 Server R2, IIS 7), the charts do not show up.
Using Firebug, I can see that the call to ChartImg.axd returns a 404, and all I get is a blank image holder in IE, or nothing in Firefox. I've searched for about 3 or 4 hours so far, and have tried just about everything recommended, but nothing seems to be working.
I would like to use memory/HttpImageHandler, instead of the ImageLocation configuration.
My Web.Config
<appSettings>
<!--<add key="ChartImageHandler" value="storage=file;timeout=20;dir=c:\TempImageFiles\;" />-->
<add key="ChartImageHandler" value="storage=memory;timeout=20;deleteAfterServicing=false" />
</appSettings>
<system.webServer>
<handlers>
<remove name="ChartImageHandler" />
<add name="ChartImageHandler" preCondition="integratedMode" verb="GET,HEAD,POST"
path="ChartImg.axd" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</handlers>
</system.webServer>
<system.web>
<httpHandlers>
<add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
validate="false" />
</httpHandlers>
<pages>
<controls>
<add tagPrefix="asp" namespace="System.Web.UI.DataVisualization.Charting"
assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</controls>
</pages>
<compilation debug="true" targetFramework="4.0">
<assemblies>
<add assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</assemblies>
</compilation>
<customErrors mode="Off"/>
</system.web>
Does anyone have any ideas where I'm going wrong to keep this from working on my server?
I found the answer to my problem, but I believe that my problem stemmed specifically from how my code runs.
Once I set privateImages=false under appSettings for my ChartImageHandler, my images came up with no problem, using ImageLocation with file storage or HttpHandler with memory storage.
I looked at the listing here and realized that my code has NONE of the following:
Authentication
SessionID
AnonymousID
so the implicit default setting of privateImages=true was keeping me from downloading my images. When I set privateImages=false I had no problems and the charts worked correctly. I set my application to use Windows Authentication, and set privateImages=true and my charts are now being generated with either the Image Location setting or the HttpHandler setting.
Hopefully this is helpful. I know I spent a long time digging around and got nowhere.
This configuration work for me. You need to use memory as storage.
< add key="ChartImageHandler" value="storage=memory;deleteAfterServicing=true;timeout=20;"/>
It seems like security/permission issue. Are you saving charts to local folder, then assign write permission for IIS user and/or network services users for that folder.
Install the Microsoft Chart Controls on your webserver or try this:
ASP.Net Chart Control On Shared Hosting Environment
Also check that the HttpHandler is registered in system.webServer in your web.config when running under IIS 7.
<controls>
<add tagPrefix="asp" namespace="System.Web.UI.DataVisualization.Charting"
assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</controls>
try this: change Version=4.0.0.0 to Version=3.5.0.0
try this it was resolved in case of web.config runtime error
<pre>
<add key="ChartImageHandler" value="storage=memory;timeout=20;deleteAfterServicing=true;Url=~\temp\"
/>
I just created a web page having a barebone chart with a few data points to test. On localhost, the chart is displayed as expected with no problem. But when I deployed to my webhost I got a 500 - Internal Server Error
500 - Internal server error.
There is a problem with the resource you are looking for, and it cannot be displayed.
Here's the web.config uploaded by Visual Studio. Could you tell me what's missing or wrong in this web.config. The appSettings look suspicious with a dir in C:, but how do I change it? Thanks.
<?xml version="1.0"?>
<configuration>
<appSettings>
<add key="ChartImageHandler" value="storage=file;timeout=20;dir=c:\TempImageFiles\;" />
</appSettings>
<system.webServer>
<handlers>
<remove name="ChartImageHandler" />
<add name="ChartImageHandler" preCondition="integratedMode" verb="GET,HEAD,POST" path="ChartImg.axd" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</handlers>
</system.webServer>
<system.web>
<httpHandlers>
<add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
validate="false" />
</httpHandlers>
<pages>
<controls>
<add tagPrefix="asp" namespace="System.Web.UI.DataVisualization.Charting"
assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</controls>
</pages>
<compilation debug="true" targetFramework="4.0">
<assemblies>
<add assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</assemblies>
</compilation>
</system.web>
</configuration>
try this link
http://asifhuddani.wordpress.com/2010/10/07/chart-control-asp-net-4-0-and-iis-7-problem/
and then delete dir=c:\TempImageFiles\; from web.config
I had the same problem, namely a 500 server error adding in the same section. Two changes resolved the 500 serve error.
replaced "add path="ChartImg.axd" verb="GET,HEAD with add path="ChartImg.axd" verb="GET,HEAD,POST".
Added line after system.webServer tag:
[validation validateIntegratedModeConfiguration="false"/]
I had to replace < with [, otherwise the preview did not show the tag.
Problem is the temporary directory. It could be because:
The directory no exists,
The user has no permission to the directory,
You are pointing to the wrong directory, or
when you move your programs form a local PC to a server you are no longer pointing to a local file, you are pointing to a URL
Solutions:
If you are using a web server, the easy and lazy solution is create a directory named temp where the aspx is located. In the same directory and give the users permission to modify.
If you are using a local PC you can use memory instead of file. No use this in the web server because is to heave for many users, but use:
<add key="ChartImageHandler" value="Storage=memory;Timeout=20;"/>
If you are using a web server, the best option is use a url instead of a file like this:
<add key="ChartImageHandler" value="storage=file;timeout=20;url=~/temp" />
You can use ~ / . or http://…
To Add permission to the ISS user, could be your user pool, windows user or any user as you used before. If you use Windows authentication, then you should grant permission to the user named “Domain Users”. Some people add permission to the user everybody. This permission should include “Modify”
I tried to install MSCharts on my Win2008 server.
It installed without problem.
Then I wrote
in config.
But when I'm trying to open page with charts it returned following error.
No http handler was found for request type 'GET'
Do you have any thougths about the problem?
This is what you need for ASP.NET 4.0 / IIS 7.5 on Windows 7:
Your web.config must contain the following:
<appSettings>
<add key="ChartImageHandler" value="storage=file;timeout=20;" />
</appSettings>
<compilation targetFramework="4.0">
<assemblies>
<add assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</assemblies>
</compilation>
<system.webServer>
<handlers>
<add name="ChartImg" verb="*" path="ChartImg.axd" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</handlers>
</system.webServer>
You also need this at the top of your aspx page:
<%# Register Assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
Namespace="System.Web.UI.DataVisualization.Charting" TagPrefix="asp" %>
Hope this helps
Like Danil said, IIS7 requires that you put the handlers in
<system.webserver>
<handlers>
Add the two lines below after the last add-in handles
<add name="ChartImg" verb="*" path="ChartImg.axd" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add name="ReportViewer" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler,Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
Solution was in web config. IIS7 required to write handlers inside system.webserver but not in the system.web. So I just move handler and add name attribute as it became required.
Don't know anything about MSCharts, but I'd say try changing the AppPool for the app to 'Classic .NET AppPool'.
Alternatively, you may need to modify your web.config to add the handler in there. See Rick Strahl's post here.