WCF / ASMX :: Unmanaged Dll Called From Webservice?
Sep 17, 2010
I have a webservice that wraps an unmanaged C++ dll. I'm wondering how I should handle state and multiple connections? I'm thinking that the unmanaged dll will be shared across all connections...is this the case? Note that I am using a shared host so I have limited abilities to modify IIS specifically. If the unmanaged dll is not shared and will have a unique instance for every connection then I have nothing to worry about. If it's the case it's shared then I guess I will have to persist the unmanaged state on a per-connection basis through a DB?
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Dec 7, 2010
I've inherited a half completed application that seems to use a model that I'm not sure can reliably work.It is a ASP.NET webservice that on each call loads a unmanaged C++ .DLL using
[DllImport ( "kernel32.dll" , EntryPoint = "LoadLibraryA" )]
public static extern int LoadLibrary( string lpLibFileName );.
[DllImport(@"MyUnamanagedDLL.dll")]
public static extern string DoStuff( );
In the unmanaged C++ .dll it is using a singleton to hold state between calls.This is so that it only has to initialise once and load a bunch of slow stuff from disk and database rather than on each webservice call as this is too slow.
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Feb 24, 2011
I am new to ASP.NET (2 months) and my very first assignment is to create a website for a municipality. Purchasing as much reading material as possible, I got started and after some time, I have a decent website (coded in C#) that is ready to be internally tested on the departmental webserver. The Web server is running IIS 7 and the pages were developed with Visual Studio 2010. On the main default page, I wanted to implement a slide show using the AJAXControlToolkit which I installed. I watched the ASP.net tutorial [URL] and literally coded my slide show verbatim. I try to launch my slideshow within my default.aspx page and absolutely nothing happens. The steps that I took are
1. Created a webservice (SlidesService.asmx) which generated a code behind file (SlidesService.cs).
2. I created the web method GetSlides() containing a 22 element array which I place in the code behind file.
3. Implement the ToolkitScriptManager establishing my image control.
4. Defined my Previous, Play and Next buttons.
5. Implemented my SlideShowExtender providing my SlideShowServicePath and SlideShowServiceMethod.
Assumptions: In doing all of the above, I noticed that the SlidesService.asmx file needs no code (as I placed all code within the codebehind file). The SlidesService.cs code behind file should reside in the App_Code folder whereas the the SlidesService.asmx file can remain in the root folder. No Button e.g Button_Click needs to be attached to the code behind source file. If I have conveyed my steps properly, can anyone shed some light on why when clicking the play button, nothing happens? Code is listed below.
[Code]....
SlidesService.asmx - code
<%@ WebService Language="C#" CodeBehind="~/App_Code/SlidesService.cs" Class="SlidesService" %>
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May 25, 2010
I want to call a webservice using jQuery.ajax() but the webervice doesn't get called. - If I change the url: to reference a .ashx file it gets called but not .asmx?
Here's the code I'm using:
jQuery.ajax({
type: "POST",
url: "/services/CheckUsername.asmx/CheckUsername", // this doesn't get called
//url: "/services/CheckUsername.ashx/ProcessRequest", this gets called
data: '{ "context": "' + "username" + '"}',
contentType: 'application/json; charset=utf-8',
dataType: 'json',
success: function (msg) {
alert("Result: " + msg);
},
error: function (XMLHttpRequest, textStatus, errorThrown) {
alert("Error: " + textStatus)
}
The .ashx file gets called but a parsererror is retuned because it's returning http context - how can I modify this to get a string return type from a webservice?
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Nov 10, 2010
On my page I have a dropdown for country.
On my asmx service I want to get the value of the dropdownlist to filter the next input which will be state/providence.
My code on the asmx:
[Code]....
I want to add another clause to the WHERE statement to restrict Country = @Country so I will need to get that value to the web service.
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Feb 24, 2011
I have datatable consist of 20 records and i want to bulk insert into sqlserver through the asmx webservice. Can anybody guide to me or provide Sample BusinessLogic and webservice code.
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Oct 31, 2010
How do I protect a webservice if it is called from ajax ?
Update: I realize that my question didn't reflect what I intended to ask. I don't want user to be able to do the request by pointing to it with its webbrowser but only in the context of my app.
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Jan 19, 2011
I have a problem with custom authentication over https. What I need is a secure channel and authenitcation on message level. I got it working quite well, but my custom validator never gets called when I send a message to the web service using SoapUI. The service is called, however the Validate method in the custom validator is never called. The validator is available for the runtime, I have checked by misspelling the type in customUserNamePasswordValidatorType which caused an exception saying it could not find type when I accessed the WSDL.
Here's my config:
[Code]....
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Service Function Getting Called Twice?
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Nov 3, 2010
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subscribe to a Provider(Feed) of News, Sports and Weather and things like that. So when a Linkbutton
on the Default.aspx page is clicked it will connect to the link in the WebService which will load the News,
Sports or Weather onto the Default.aspx web page.
The problem is I can't get the LinkButton to execute the Link in the WebService. The link will call the page up
to where you see all of the Web References. But then if you want to execute one of those references you
have to click its link and the Invoke button that will follow. My questioh is how can the link on my Default.aspx
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the link in the WebServices. I always use www.Microsoft.com as the link when testing and I wasn't sure about the return type
so I put "void" for an HTTPRequest, so below is the link from the Default.aspx web page and below that is he asmx file:
[code]....
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Nov 4, 2010
I have created a web service. When I check the service directly from it's web page it works correctly. Here's what the code looks like:
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.Configuration;
using System.Runtime.Serialization;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Web.Script.Services;
using System.Runtime.Serialization.Json;
using System.IO;
using System.Text;
using Microsoft.SharePoint;
using System.Collections;
namespace MDA.WebParts.SPRolodex_Web_Service
{
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService()]
public class SPRolodex_Web_Service : System.Web.Services.WebService
{
public SPRolodex_Web_Service()
{
}
[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public bool ListExists(string personalUrl, string listName)
{
try
{
SPSite mySite = new SPSite(personalUrl);
SPWeb web = mySite.OpenWeb();
SPList list = web.Lists[listName];
return true;
}
catch (ArgumentException)
{
return false;
}
}
}
}
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"Only Web services with a [ScriptService] attribute on the class definition can be called from script."
As you can see the class has the ScriptService attribute and the methods have the ServiceMethod attribute.
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Code]....
The values that I would like to getis:carWorkOrderInfoResult.areaIdcarWorkOrderInfoResult.workOrderNumber
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[WebMethod]
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{
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