Month: August 2014

How to use C# Web Service Client with BasicAuth (for SAP)

Posted by Raffael on Posted in C#.Net, SAP, Tutorials Tagged , , , , , , , , ,

SAP Webservice with .NET Webservice Client and BasicAuthNo matter how frumpy SAP may look most of the time, nevertheless you can build such modern things like web services inside the SAP system. Even the WSDL (Web Service Description File) file can be generated in SAP. I read about this feature (WSDL generation) just at the right time, because recent days I should write a web service in SAP which should be triggered by a C# application.
In .NET web services can easily integrated via their WSDL file by using the WebReference feature of Visual Studio. Therefore Visual Studio generates a so-called proxy class from the given WSDL file which can be used to call all functions of the webservice without thinking too much.
As far as in theory. In practice I had to choose the security mode for the web service in SAP. […]

How to use alias for using-directives and namespaces in C#

Posted by Raffael on Posted in C#.Net Tagged , , , , ,

Anyone who has already written one or the other program in Visual Studio with C# probably knows the following problem. Sometimes you use different libraries (Dlls) from different developers/vendors. Partly also libraries that fulfill similar purposes. This might go well, but it doesn’t have to.
Often you will get confronted with an error message like this: “‘XYZ’ is an ambiguous reference between ‘LibraryA.XYZ’ and ‘LibraryB.XYZ’”
What next? In the following I’ll explain how to solve this kind of error by taking the example of the AForge library. For instance we profess that we included the following using-directives into our program.
using System.Drawing;
using AForge.Imaging;
So now, if we use the class “Image” in our program, we will see the following error message, which result from the fact that there are two “Image” classes referenced. One in the System.Drawing namespace as also one in the AForge.Drawing namespace. Visual Studio (and later on it’s compiler) doesn’t know which Image class to […]