![]() If your class has methods, these methods will not be transmitted to the client. Objects: You can use an object of any user defined class.Built-in types (The Basics): The built in C# data types such as short, int, long, ushort, uint, ulong, float, double, decimal, bool, string, char, byte and DateTime.It is a distributed technology that allows use of. NET objects, even if you could devise a way to send them over the wire, the client might not be able to interpret them, that would thwart interoperability. Since other programming languages have no way to interpret these. ![]() NET objects such as a FileStream, an Image or an EventLog. So you can use simple data types such as strings and numbers to communicate with a web service and you can't send proprietary. That's why Web Services are built on XML-based standards for exchanging data.Īs a result, the set of data types Web Services can use is limited to the set of data types recognized by the XML Schema standard. Since a web service is cross-platform, there should be some commonly understandable language for requesting a service and getting a response from the service. The only requirement for accessing a service is an internet connection to make the HTTP request. ![]() Note 2: Web Services are cross-platform a service written in one language can be invoked by an application in some other language. NET was released and they are exposed, used and supported by vendors other than Microsoft. Note 1: Web Services are not limited to the. They are pieces of business logic that are hosted somewhere on the internet and can be accessed by other applications. When HTML pages (or the HTML output generated by ASP.NET web forms) are rendered in a browser for the end user, Web Services are invoked by other applications. The main difference is that Web Services can be located remotely on another server. This technique is similar to what programmers currently do with libraries of APIs, DLLs or plug-ins. With Web Services, you can reuse someone else's business logic instead of replicating it yourself, using just a few lines of code. So, what if I can use this existing logic in my application? But, the question here is “how I can use someone else's business logic in my application?”.įor situations of this sort (& many other), we have techniques like Web Services. On the other hand all these functionalities are already provided by other available sites. Just think about how much effort and time it will take me to develop this application if I write the code for all these functionalities. I was just fine in 4.5.Let's think of a scenario where I am planning to show information on regional, national and international news, weather information, ongoing sports scores and other personalized content in a web site. NET Folder" option to create "App_Code" - it seems to key in on the name. It doesn't matter if you use the "New Folder" or "Add ASP. Note: If you create a standard folder called "AppCode", move your classes into it, delete the "App_Code" folder, then rename "AppCode" to "App_Code", your problems will return. I found that if I just moved the offending classes that had to call methods in each other to another, standard folder named something other than "App_Code", they stopped having this conflict issue. One of my methods kept having an error like: The type X.Y conflicts with the imported type X.Y in MyProject.DLLĪll of my classes were already set to "Compile" in their properties, as suggested on the accepted answer here, and each had a common namespace that was the same, and each had using MyNamespace at the top of each class. That's when I found this problem (after fixing the langversion in my web.config from 6 to 5. NET 4.5.2 project, but then I had to revert it to 4.0 as the target server wasn't getting upgraded. I haven't figured out yet why this occurs, but I had classes that were in my App_Code folder that were calling methods in each other, and were fine in doing this when I built a.
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