ASP.NET AJAX Networking and Web Services

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

Narayan L S — Thu, 19 Nov 2009 14:05:22 GMT

add System.Web.Extensions

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

Narayan L S — Thu, 19 Nov 2009 13:48:01 GMT

Try adding System.Web.Extensions DLL reference in your app it will work.

Sincerely,
Narayan LS

Microsoft Online Community Support

Please remember to click “Mark as Answer” on the post that helps you, and to click “Mark as Not Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

JamieKitson — Thu, 02 Jul 2009 11:25:48 GMT

You need to install Web Services Enhancements (WSE) 2.0 SP2 for Microsoft .NET

http://www.microsoft.com/DOWNLOADS/details.aspx?familyid=FC5F06C5-821F-41D3-A4FE-6C7B56423841&displaylang=en

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

snowyinmn — Tue, 30 Jun 2009 15:25:29 GMT

I was having troubles with this too - after looking on the msdn website, I noticed that you need .NET 3.5, well I'm running on 2.0 so I'm out of luck.

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

kabrown — Wed, 16 Jan 2008 15:38:20 GMT

Sorry for the delay. I really don't know how to answer your questions. Like I said, I'm pretty new to ASP and AJAX myself and still trying to make sense of it all.

A web service "allows distributed applications to share business logic over a network". You can use them in a variety of ways. One of the few ways I've implemented them is using cascading dropdowns in the sample code I gave earlier. There's lots of different ways to consume a web service, but I don't have much experience with them. I did a search on consuming webservices and got tons of hits, this would probably be a better learning tool for you.

As far as your specific questions about the code sample, perhaps a little more of the actual code would help make sense. There are two drop downs. The first has a data source and the datavaluefield is "RoleId". RoleId is used by the serviceMethod "GetEmployeesByRole". The two dropdowns are "tied" together within the cascading dropdown's code "parentcontrol=ddlRole" and "targetcontrol=ddlEmployee".

Role: <asp:DropDownList ID="ddlRole" runat="server"

DataSourceID="ods_Roles" DataTextField="RoleName" DataValueField="RoleId"

OnSelectedIndexChanged="Page_Load" ToolTip="Narrow results by selecting a Role.">

</asp:DropDownList>

Volunteer:

<asp:DropDownList ID="ddlEmployee" runat="server" ToolTip="Narrow results by selecting an employee(s)."></asp:DropDownList>

<ajaxToolkit:CascadingDropDown ID="cddlEmployee" runat="server"

Category="Roles" LoadingText="Please wait..."

ParentControlID="ddlRole" PromptText="Select a Volunteer"

TargetControlID="ddlEmployee"

ServicePath="http://localhost:65269/OpenDoor/ODCService.asmx" ServiceMethod="GetEmployeesByRole" />

<asp:ObjectDataSource ID="ods_Roles" runat="server"

OldValuesParameterFormatString="original_{0}"

SelectMethod="GetRoles"

TypeName="dsRoleTableAdapters.RolesTableAdapter">

</asp:ObjectDataSource>

<asp:Button ID="Button2"

runat="server" Text="Get Schedules" onClick="ddl_SelectedIndexChange"/>

Good Luck!

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

imei — Mon, 14 Jan 2008 18:00:41 GMT

This is very helpful.

I see that the line that invokes the webservice is ServicePath="http://......". Is this the only line I need to invoke a webservice?

How does the parameter pass into the GetEmployeesByRole method (if it takes parameters)?

Also, Where can I place this code, in ButtonClick, Pageload, or something like that?

THANKS!

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

kabrown — Mon, 14 Jan 2008 16:27:46 GMT

I'm not sure I understand exactly what you're asking.

If you have added a webservice to your project you can test it by using it's URL. For example I have a webservice in my project called TestService.asmx. In order to test it I use this URL:

http://localhost:65269/OpenDoor/TestService.asmx

To get the proper port, just run your project in debug which gives me:

http://localhost:65269/OpenDoor/Default.asp

then just change the Default.asp to TestService.asmx

In my ASP file I'm using the webservice in a Cascading drop down (used in the ServicePath):

<ajaxToolkit:CascadingDropDown ID="cddlEmployee" runat="server"

Category="Roles" LoadingText="Please wait..."

ParentControlID="ddlRole" PromptText="Select a Volunteer"

TargetControlID="ddlEmployee"

ServicePath="http://localhost:65269/OpenDoor/TestService.asmx" ServiceMethod="GetEmployeesByRole" />

Hope that was what you were looking for.

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

imei — Mon, 14 Jan 2008 15:14:44 GMT

Actually you're a great help! It gave confidence that what I did was fine and it turned to be the case. The only problem was that the assembly didn't come in immediately. Much later after I added the reference, I got a message saying that "web.config was modified outside....do you want to reload..." and I said "yes". There, it is, the assembly showed up in my web.config file. And it works now!

We need to let people know about the delay of the added reference being effective...for some reason on some cases....

I do have a second question and would appreciate your help. Do you have a sample code to invoke the Webservice from a Browser or JS client code? I understand that I can't test the Webmethod as Query String via URL with parameters passed in, although, that's a preferred way for me.

Many thanks again!

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

kabrown — Mon, 14 Jan 2008 14:49:43 GMT

I added AJAXControlToolKit.dll

I am using the latest AJAX download. I wouldn't think the dll would vary from version to version. And I didn't get any hits when I searched for AJAXExtension Toolkit.dll.

Sorry, not much help....

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

imei — Mon, 14 Jan 2008 13:59:53 GMT

Do you have the exact name for the AJAX Extension assembly? When I did the steps instructed, it added "AJAXExtentionToolkit.dll" and the error message still didn't go away. However, it complains about 'Script', not 'Web' does not exist.

Any suggestions?

Thanks!

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

kabrown — Wed, 09 Jan 2008 21:42:46 GMT

Thanks so much for your advice -- That's exactly what I needed!

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

jamanga — Fri, 08 Jun 2007 05:47:29 GMT

Hi,

I'm pretty new to web apps but try the following:

Install ASP.NET AJAX Extensions from http://ajax.asp.net/downloads/default.aspx?tabid=47
"Add Reference" within your project, look for the assembly and Add it.

This should add the reference to your web.config file.

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

prsuman — Tue, 05 Jun 2007 06:57:09 GMT

Hi All Where do i get this System.web.Extensions Reference.. i Need it.. its very urgent...

Thanks in Advance

Regards,

suman

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

swdev — Mon, 19 Mar 2007 14:18:33 GMT

Try adding the System.Web.Extensions reference.

Re: [Microsoft.Web.Script.Services.ScriptService()] - The type or namespace name 'Web' does not exist in the namespace 'Microsoft'

swdev — Mon, 19 Mar 2007 12:23:13 GMT

I'm also getting the same error. I can successfully run the example project : Make Client-Side Network Callbacks with ASP.NET AJAX" found at http://www.asp.net/learn/videos/view.aspx?tabid=63&id=79 (as mentioned above) but when I try and implement similar functionlity in another application I dont even recieve intellisence on the Microsoft.Web.Script.Services.ScriptService() call. I have doubled checked web.config files assembly references etc etc. The one thing I can say is that my application that gives the error is a Web Application Project rather than the new Stock project model. Any help would be greatly appreciated...