Develop Reference

webservice with exceldna and c#

I am using a Java webservice. I'm consuming it with an Excel function which I made using c# and excel-dna. The problem is that everytime I call the function add I get (#valeur).
This my c# code source:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using ExcelDna.Integration;
using System.Diagnostics;
using System.ServiceModel;
using System.ServiceModel.Channels;
namespace MyLibrary
{
public class Class1
{
[ExcelFunction(Description = "adds two terms")]
public static int add(int a, int b)
{
ServiceReference1.ServerImplClient client =
new ServiceReference1.ServerImplClient();
return client.addition(a, b);
}
}
}
Service Reference has been included and the dna and xll files also.

Approach debugging this step by step.
To debug an Excel DNA method from Visual Studio, you need to:
bring up your Excel; make sure that the XLL that is loaded is the one in the bin directory
in Visual studio "attach" to the excel process (tools->attach to process or Ctrl-Alt-p)
put a breakpoint at the start of your function (if the correct XLL is loaded the breakpoint will be a filled circle; if it isn't then the loaded XLL is a different one)
If you then make a call to your function and it doesn't hit the breakpoint, you may be passing in the wrong parameter types (side note: all numeric values in Excel are doubles - you can always have object parameters and check the arguments in your function).
If it does hit your function then you can step through your client code in the normal way.

Class library loses references (dlls) when being used

Sorry for the title. I don't know how to describe this problem shortly.
My problem is that I have a class-library which has references to other (third party) DLLs.
I need to use this class-library in another project, so I obviously added the .dll of my class-library to my main-project.
When I start my main-project, there's alway an error which says, that a reference (dll) in my class-library cannot be found.
If I add the whole class-library as a project to my projectmap in visual studio and then reference the whole project, this error doesn't occur.
I really don't want to add the whole class-library as a project to every "host"-project I make.
Has anyone an idea why this error occurs when the .dll of the class-library is added, but not when the whole project of the class-library is added as reference?
There must be a solution to get this working even if I don't add the whole library-project as reference. Otherwise it wouldn't make any sense to make a class library, right?
By the way: My class-library contains third-party dlls and the local copy property of the third-party dll is set to true.
Thanks in advance!
Edit:
My goal is to really make the class-library portable, even though it contains third-party libraries. I want to give only the .dll to another pc and use it without adding the whole class-library project every time.

The error is because you're not copying the dll's on the second project, you added a reference to your dll so it get's copied, but not the dll's referenced by your dll, so there are missing libraries.
Or you redistribute the dependencys with your dll or you can embedd the dll's inside your dll as resources and then intercept the assembly load and provide it through a resource: http://blogs.msdn.com/b/microsoft_press/archive/2010/02/03/jeffrey-richter-excerpt-2-from-clr-via-c-third-edition.aspx
EDIT: IN order to do it inside a dll you need to use an static class and call an static initializer BEFORE using any of the classes which are dependant on other libraries.
Here is an example setup:
-A library called LibraryB which supplies a simple class like this:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace LibraryB
{
public class ReferencedClass
{
public int GetIt()
{
return 5;
}
}
}
-A library called LibraryA which references LibraryB and supplies two classes, the initializer and the real class:
Initializer
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
namespace LibraryA
{
public static class Initializer
{
public static void Init()
{
AppDomain.CurrentDomain.AssemblyResolve += (sender, args) =>
{
if (!args.Name.StartsWith("LibraryB"))
return null;
return Assembly.Load(LibraryA.Properties.Resources.LibraryB);
};
}
}
}
Class
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace LibraryA
{
public class RealClass
{
public int DoIt()
{
LibraryB.ReferencedClass cl = new LibraryB.ReferencedClass();
return cl.GetIt();
}
}
}
The LibraryA also has the LibraryB.dll compiled library embedded as a resource.
-A project called Test which only references LibraryA:
using LibraryA;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Initializer.Init();
RealClass c = new RealClass();
Console.WriteLine("From LibraryA: " + c.DoIt());
Console.ReadKey();
}
}
}
If you set-up everithing right and you execute it it will work, remember that if you are doing through visual studio, vs will copy the dll's so to do a real test after compiling all copy the exe and LibraryA and execute, it will work without LibraryB and LibraryB is being used from LibraryA.

Executing .R file in C# using R.net in visual studio

I have a .r file which fetches data from database, performs some calculation and write back to a new table in database.
I am trying to execute the .r file from C# using visual studio 2010.
The C# code is mentioned below.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using RDotNet;
using RDotNet.Devices;
using RDotNet.Internals;
namespace EmbeddAssembly
{
class Program
{
static void Main(string[] args)
{
string rhome = System.Environment.GetEnvironmentVariable("R_HOME");
if (string.IsNullOrEmpty(rhome))
rhome = #"C:\Program Files\R\R-2.14.1";
System.Environment.SetEnvironmentVariable("R_HOME", rhome);
System.Environment.SetEnvironmentVariable("PATH", System.Environment.GetEnvironmentVariable("PATH") + ";" + rhome + #"binx64");
// Set the folder in which R.dll locates.
//REngine.SetDllDirectory(#"C:Program FilesRR-2.12.0bini386″);
REngine.SetDllDirectory(#"C:\Program Files\R\R-2.14.1\bin\x64");
// REngine e = REngine.CreateInstance("test", new[] { "" });
using (REngine engine = REngine.CreateInstance("RDotNet", new[] { "-q" })) // quiet mode
{
foreach (string path in engine.EagerEvaluate(".libPaths()").AsCharacter())
{
Console.WriteLine(path);
}
engine.Evaluate(".libPaths(C:\\Program Files\\R\\R-2.14.1\\library)");
engine.Evaluate("source(C:\\Users\\..\\Documents\\Visual Studio 2010\\Projects\\EmbeddAssembly\\multi.r)");
Console.ReadLine();
}
}
}
}
I am not getting any error but it is not calling the .r file.
The code in r file works fine because I am able to retrive data and write into the table. However on calling that from C# it is not performing any action.

You are missing character delimitors around arguments to the R functions called. Also, avoid using backslashes when passing strings to R.NET's Evaluate. You may need to end up having quadruple backslashes (or even more if using regular expressions) to get things to work.
You should use something like:
engine.Evaluate(".libPaths('C:/Program Files/R/R-2.14.1/library')");
engine.Evaluate("source('C:/Users/Documents/Visual Studio 2010/Projects/EmbeddAssembly/multi.r')");
It seems you are using a very old version of R.NET; I strongly advise you to use R.NET.Community on NuGet. I know there is an R.NET nuget feed still up too, but this appears not maintained anymore. Also, FYI, R.NET latest reference documentation is now on a GitHub page

C# DLL using DllExport: No entry point when called in VBA

To avoid requiring a Dll be registered for all users of a spreadsheet, I'm trying to use late binding so that users do not need to add a reference to the Dll.
I've created the Dll in C# with Visual Studio, and even though I've included "using RGiesecke.DllExport;" and used DllExport on a function to return an object containing the functions I need to access in VBA, I still get the error "Run-time error '453': Can't Find DLL entry point CreateDotNetObject in C:\temp\MyFunctions.dll."
The DLL code is as follows:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.TeamFoundation.WorkItemTracking.Client;
using System.Data;
using System.Text.RegularExpressions;
using Microsoft.TeamFoundation.Client;
using System.Runtime.InteropServices;
using System.ComponentModel;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;
using System.Collections;
using System.Collections.ObjectModel;
using System.Threading;
using Microsoft.TeamFoundation.Framework.Client;
using Microsoft.TeamFoundation.Framework;
using Microsoft.TeamFoundation.Common;
using Microsoft.VisualBasic;
using System.Diagnostics;
using RGiesecke.DllExport;
namespace MyFunctions
{
public interface IMyFunctions
{
string GetWorkItemLinkList(string WIIDs);
}
[CLSCompliant(true), ComVisible(true), ClassInterface(ClassInterfaceType.AutoDual)]
public class MyFunctions : IMyFunctions
{
TfsConfigurationServer server;
WorkItemStore store;
private void TFSconnect()
{
//Code to connect
}
[CLSCompliant(true), ComVisible(true), Description("GetWorkItemLink func")]
public string GetWorkItemLink(int WIID)
{
TFSconnect();
//Code to build return string "message"
return message;
}
[CLSCompliant(true), ComVisible(true), Description("GetWorkItemLinkList func")]
public string GetWorkItemLinkList(string WIIDs)
{
TFSconnect();
//Code to build return string "returnStr"
return returnStr;
}
}
static class UnmanagedExports
{
[DllExport]
[return: MarshalAs(UnmanagedType.IDispatch)]
static Object CreateDotNetObject()
{
return new MyFunctions();
}
}
}
and the declaration in VBA is as follows:
Private Declare Function CreateDotNetObject Lib "c:\temp\MyFunctions.dll" () As Object
But when I try to instantiate an object, I get the error I mentioned above.
Sub test()
Dim o As Object
Set o = CreateDotNetObject()
End Sub
This is my first time attempting to use custom dll functions in Excel without adding a reference in the VBA. The functions do work if I add a reference (early binding), but the DLL is not going to be propogated to everyone who uses the spreadsheet, and I need it to not crash when they run normal functions.
EDIT: Additional info. I just noticed that in addition to the DLL, when I build the solution in Visual Studio I also get an " Object FileLibrary" and an "Exports Library File". When I register the DLL is there anything I should be doing with either the .exp or .lib?
Thanks,
Mike

I was building the solution with the Platform Target in the class library properties set to "Any PC", which apparently does not allow exports. When I switch it to "x86" it totally works.

Syntax Analysis with MS Roslyn

I have a litle but stupid problem. I started working with MS Roslyn, and I am trying to do the Walkthrough, but directly at the beginning an error occurred...
error CS0117: 'Roslyn.Compilers.CSharp.SyntaxTree' does not contain a
definition for 'ParseCompilationUnit'
I do not understand why it occurred... maybe one of you had the same problem.
My Sourceode:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Roslyn.Compilers;
using Roslyn.Compilers.CSharp;
using Roslyn.Services;
using Roslyn.Services.CSharp;
namespace gettingstarted2
{
class Program
{
static void Main(string[] args)
{
SyntaxTree tree = SyntaxTree.ParseCompilationUnit(
#"using System;
using System.Collections;
using System.Linq;
using System.Text;
namespace HelloWorld
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine(""Hello, World!"");
}
}
}");
var root = (CompilationUnitSyntax)tree.GetRoot();
}
}
}

What is the date mentioned in the walkthrough you were following? The method was renamed from ParseCompilationUnit to ParseText for the September CTP. If you a previous CTP installed, it's possible that the walkthrough wasn't updated properly when you installed the latest CTP.
I would recommend uninstalling and reinstalling the CTP or using repair.

#Anton to be shure, that is the newest one... You can use Nuget to install Roslyn.
Run the following command in the Package Manager Console : PM> Install-Package Roslyn