At various times I get an error message telling me that the server tag "asp:ScripManager is " is ambiguous. It may also happen with other tags including UpdateProgress and UpdatePanel. How do I fix this?
I am running Visual Web Developer 2008 with Framework Version 3.5.
Please click 'Mark as Answer' if reply assisted you.
"A common mistake that people make when trying to design something completely foolproof was to underestimate the ingenuity of complete fools." ~ Douglas Adams
ok. that ambiguous error generally comes to you when you have two assemblies (DLL's) in your bin file which define the scriptmanager.
Does your error mention a particular namespace (like Microsoft.Web.UI or MicrosoftWEb.Extensions.dll)?
Please click 'Mark as Answer' if reply assisted you.
"A common mistake that people make when trying to design something completely foolproof was to underestimate the ingenuity of complete fools." ~ Douglas Adams
The message says "The server tag 'asp:ScriptManager' is ambiguous. Please midify the associated registration that is causing ambiguity and pick a new tag preference. The fiel is Post.aspx line 3. Line 3 is printed below.
The message says "The server tag 'asp:ScriptManager' is ambiguous. Please midify the associated registration that is causing ambiguity and pick a new tag preference. The fiel is Post.aspx line 3. Line 3 is printed below.
Hmmm.. I wonder if this means your System.Web.Extensions have been registered twice, once in the aspx source code and once in your web.config file... please delete the scriptmanager from your page, delete the above register line from your page, and attempt
to recompile. It should error. now drag a scriptmanager back onto the page. Did the Register line get placed back in the page? Try to recompile.
Please click 'Mark as Answer' if reply assisted you.
"A common mistake that people make when trying to design something completely foolproof was to underestimate the ingenuity of complete fools." ~ Douglas Adams
As you suggested I deleted the scriptmanager and the registration line went away and so did that error. I re-created the script manager and the registration line came back and so did the error.
I get a total of 3 errors on this page.
The server tag 'asp:ScriptManager' is ambiguous. Please modify the associated registration that is causing ambiguity and pick a new tag prefix.
The server tag 'asp: UpdatePanel' is ambiguous. the rest is the same
The server tag 'asp:UpdateProgress' is ambiguous. The rest of the line is the same.
Please click 'Mark as Answer' if reply assisted you.
"A common mistake that people make when trying to design something completely foolproof was to underestimate the ingenuity of complete fools." ~ Douglas Adams
However, I have extracted the downloaded the ClubExtended V2 source several more times. If I open the web using VWD 2005 with the 2.0 framework I get no errors. If I use VWD 2008 with the 2.0 framework I also get a clean web. However, If I convert to
Framework 3.5 as it asks me to do when I first open the web then the errors occur.
It seems it is the conversion from Framework version 2.0 to 3.5 that is causing the problem. I just won't do that conversion.
Has anyone found a solution to this problem? My situation is a little different, but I am experiencing the same result. I develop module for the DotNetNuke content management system in Asp.Net. I created a simple module in Visual Studio 2005 with AJAX
using system.web.extensions.dll and it works fine. When I create the same module code in a fresh project in Visual Studio 2008 I get this error:
DotNetNuke.Services.Exceptions.ModuleLoadException: E:\Inetpub\wwwroot\KA3\DesktopModules\Test\Main.ascx(8): error BC30560: 'UpdatePanel' is ambiguous in the namespace 'System.Web.UI'. ---> System.Web.HttpCompileException: E:\Inetpub\wwwroot\KA3\DesktopModules\Test\Main.ascx(8):
error BC30560: 'UpdatePanel' is ambiguous in the namespace 'System.Web.UI'. at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild,
Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.UI.TemplateControl.LoadControl(VirtualPath
virtualPath) at System.Web.UI.TemplateControl.LoadControl(String virtualPath) at DotNetNuke.UI.Skins.Skin.InjectModule(Control objPane, ModuleInfo objModule, PortalSettings PortalSettings) --- End of inner exception stack trace ---
I removed system.web.extensions.dll from the bin folder and I still get the error. I really have no idea how to fix this. It appears that somehow the UpdatePanel control is defined in two different copies of the web.system.ui namespace.
Any suggestions will be greatly appreciated. Visual Studio 2008 is unusable for me until I can get past this.
kyleq
Member
52 Points
54 Posts
Ambiguous
Dec 26, 2007 04:13 PM|LINK
At various times I get an error message telling me that the server tag "asp:ScripManager is " is ambiguous. It may also happen with other tags including UpdateProgress and UpdatePanel. How do I fix this?
I am running Visual Web Developer 2008 with Framework Version 3.5.
pixelsyndica...
Star
7826 Points
1344 Posts
Re: Ambiguous
Dec 26, 2007 04:46 PM|LINK
Does your ScriptManager code contain an unique ID and a runat property?
<asp:ScriptManager ID="ScriptManager1" runat="server">
"A common mistake that people make when trying to design something completely foolproof was to underestimate the ingenuity of complete fools." ~ Douglas Adams
kyleq
Member
52 Points
54 Posts
Re: Ambiguous
Dec 26, 2007 06:01 PM|LINK
Yes. That phrase occurs on several pages.
Kyle
pixelsyndica...
Star
7826 Points
1344 Posts
Re: Ambiguous
Dec 26, 2007 06:13 PM|LINK
ok. that ambiguous error generally comes to you when you have two assemblies (DLL's) in your bin file which define the scriptmanager.
Does your error mention a particular namespace (like Microsoft.Web.UI or MicrosoftWEb.Extensions.dll)?
"A common mistake that people make when trying to design something completely foolproof was to underestimate the ingenuity of complete fools." ~ Douglas Adams
kyleq
Member
52 Points
54 Posts
Re: Ambiguous
Dec 26, 2007 10:11 PM|LINK
The message says "The server tag 'asp:ScriptManager' is ambiguous. Please midify the associated registration that is causing ambiguity and pick a new tag preference. The fiel is Post.aspx line 3. Line 3 is printed below.
<%
@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="System.Web.UI" TagPrefix="asp" %>The line below is where the reference to ScriptManager takes place. Highlighting the word ScriptManager brings the following information.
Element ScriptManager is not a know element. This can occur if there is a compilation error in the web site or if the web.config file is missing.
<
asp:ScriptManager id="ScriptManager1" runat="server">pixelsyndica...
Star
7826 Points
1344 Posts
Re: Ambiguous
Dec 27, 2007 01:15 PM|LINK
Hmmm.. I wonder if this means your System.Web.Extensions have been registered twice, once in the aspx source code and once in your web.config file... please delete the scriptmanager from your page, delete the above register line from your page, and attempt to recompile. It should error. now drag a scriptmanager back onto the page. Did the Register line get placed back in the page? Try to recompile.
"A common mistake that people make when trying to design something completely foolproof was to underestimate the ingenuity of complete fools." ~ Douglas Adams
kyleq
Member
52 Points
54 Posts
Re: Ambiguous
Dec 27, 2007 02:59 PM|LINK
As you suggested I deleted the scriptmanager and the registration line went away and so did that error. I re-created the script manager and the registration line came back and so did the error.
I get a total of 3 errors on this page.
The server tag 'asp:ScriptManager' is ambiguous. Please modify the associated registration that is causing ambiguity and pick a new tag prefix.
The server tag 'asp: UpdatePanel' is ambiguous. the rest is the same
The server tag 'asp:UpdateProgress' is ambiguous. The rest of the line is the same.
What do you suggest.
pixelsyndica...
Star
7826 Points
1344 Posts
Re: Ambiguous
Dec 27, 2007 03:13 PM|LINK
try modifying these lines in the following way: asp > myasp
<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
Namespace="System.Web.UI" TagPrefix="myasp" %><myasp:ScriptManager id="ScriptManager1" runat="server">
"A common mistake that people make when trying to design something completely foolproof was to underestimate the ingenuity of complete fools." ~ Douglas Adams
kyleq
Member
52 Points
54 Posts
Re: Ambiguous
Dec 27, 2007 09:04 PM|LINK
That did not work.
However, I have extracted the downloaded the ClubExtended V2 source several more times. If I open the web using VWD 2005 with the 2.0 framework I get no errors. If I use VWD 2008 with the 2.0 framework I also get a clean web. However, If I convert to Framework 3.5 as it asks me to do when I first open the web then the errors occur.
It seems it is the conversion from Framework version 2.0 to 3.5 that is causing the problem. I just won't do that conversion.
Thanks for all your help.
prichards14
Member
4 Points
2 Posts
Re: Ambiguous
Jan 22, 2008 12:00 AM|LINK
Has anyone found a solution to this problem? My situation is a little different, but I am experiencing the same result. I develop module for the DotNetNuke content management system in Asp.Net. I created a simple module in Visual Studio 2005 with AJAX using system.web.extensions.dll and it works fine. When I create the same module code in a fresh project in Visual Studio 2008 I get this error:
DotNetNuke.Services.Exceptions.ModuleLoadException: E:\Inetpub\wwwroot\KA3\DesktopModules\Test\Main.ascx(8): error BC30560: 'UpdatePanel' is ambiguous in the namespace 'System.Web.UI'. ---> System.Web.HttpCompileException: E:\Inetpub\wwwroot\KA3\DesktopModules\Test\Main.ascx(8): error BC30560: 'UpdatePanel' is ambiguous in the namespace 'System.Web.UI'. at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.UI.TemplateControl.LoadControl(VirtualPath virtualPath) at System.Web.UI.TemplateControl.LoadControl(String virtualPath) at DotNetNuke.UI.Skins.Skin.InjectModule(Control objPane, ModuleInfo objModule, PortalSettings PortalSettings) --- End of inner exception stack trace ---
I removed system.web.extensions.dll from the bin folder and I still get the error. I really have no idea how to fix this. It appears that somehow the UpdatePanel control is defined in two different copies of the web.system.ui namespace.
Any suggestions will be greatly appreciated. Visual Studio 2008 is unusable for me until I can get past this.
Thanks!
-Pat
Visual Studio 2008 Ambiguous UpdatePanel