Multiple assemblies with equivalent identity have been imported...

Hi,

I am designing an application to run on the Microsoft HoloLens using Unity for the user interaction.
The application connects to an asmx webservice to retrieve data.

I have a C# test program to test the connection and data retrieval from the webservice.
I then followed this tutorial to generate a dll based on the weservice wsdl (

)

If use the following script to generate the dll:

I added system.Data because my webservice returns DataSet data from a Database.
I dropped that dll in the Assets folder of the Unity project.
I also had to drop System.Data.dll, System.dll, and System.Web.Services.dll in it (took them from C:\Program Files\Unity Hololens 5.4.0b16-HTP\Editor\Data\Mono\lib\mono\unity folder)
When I use the Unity editor, my application connects to the webservice and retrieve the data without problems.

Next step, I followed this tutorial to make a HoloLens application from Unity (http://hololenshelpwebsite.com/Blog/EntryId/1006/HoloLens-Hello-World)
While it work for their own Hello World, when I tried to build my own project from unity I receive the following error:

So I added a ProjectFileHook.cs file under Editor with the following content:

Code (CSharp):

1. using System;
2. using System.IO;
3. using System.Linq;
4. using System.Text;
5. using System.Xml.Linq;
6. using UnityEditor;
7. using SyntaxTree.VisualStudio.Unity.Bridge;
8. using UnityEngine;
9.  
10. // http://forum.unity3d.com/threads/missing-c-references-to-system-data.11361/
11. // https://visualstudiogallery.msdn.microsoft.com/8d26236e-4a64-4d64-8486-7df95156aba9
12.  
13. [InitializeOnLoad]
14. public class ProjectFileHook
15. {
16.     // necessary for XLinq to save the xml project file in utf8
17.     class Utf8StringWriter : StringWriter
18.     {
19.         public override Encoding Encoding
20.         {
21.             get { return Encoding.UTF8; }
22.         }
23.     }
24.  
25.     static void ProcessNodesWithIncludeAttribute(XDocument document, string localName, string includeValue, Action<XElement> action)
26.     {
27.         var nodes = document
28.             .Descendants()
29.             .Where(p => p.Name.LocalName == localName);
30.  
31.         foreach (var node in nodes)
32.         {
33.             var xa = node.Attribute("Include");
34.             if (xa != null && !string.IsNullOrEmpty(xa.Value) && string.Equals(xa.Value, includeValue))
35.             {
36.                 action(node);
37.             }
38.         }      
39.     }
40.  
41.     // Remove System.Data from project (not from file system so Unity can compile properly)
42.     static void RemoveFileFromProject(XDocument document, string fileName)
43.     {
44.         ProcessNodesWithIncludeAttribute(document, "None", fileName, element => element.Remove());      
45.     }
46.  
47.     // Adjust references, by using the default framework assembly instead of local file (remove the HintPath)
48.     static void RemoveHintPathFromReference(XDocument document, string assemblyName)
49.     {
50.         ProcessNodesWithIncludeAttribute(document, "Reference", assemblyName, element => element.Nodes().Remove());      
51.     }
52.  
53.     static ProjectFileHook()
54.     {
55.         ProjectFilesGenerator.ProjectFileGeneration += (string name, string content) =>
56.         {
57.             var document = XDocument.Parse(content);
58.  
59.             RemoveFileFromProject(document, @"Assets\System.Data.dll");
60.             RemoveHintPathFromReference(document, "System.Data");
61.  
62.             RemoveFileFromProject(document, @"Assets\System.Web.Services.dll");
63.             RemoveHintPathFromReference(document, "System.Web.Services");
64.  
65.             RemoveFileFromProject(document, @"Assets\System.dll");
66.             RemoveHintPathFromReference(document, "System");
67.             var str = new Utf8StringWriter();
68.             document.Save(str);
69.  
70.             return str.ToString();
71.         };
72.     }
73. }

But it looks like this does nothing.

I am at a lost about how to fix this at the moment, and I really need experts help to figure it out.

 

How do I change the plugin importer settings ?
I am really new to Unity, so it's a bit of a struggle to figure out the best way around.

 

Ok, so I checked the plugin settings, and I am not sure what to set exactly

First of all, I have imported System.dll from the Mono 2.0 folder into the plugins folder because the build said it could not find the references to System.Component
Then when I built the project for the Windows Store I got the following error:

It looks like it is a version conflicts.
So then I changed the System.dll Plugin settings to "Don't process"
But that did not seem to change anything in the outcome.

I also changed the platform for plugin to be only for the Editor.
But then I got the following error during the build:

I attached a screenshot for the Plugin settings because for the Windows Store is does not look exactly like the one in the link you gave me.

 

I just marked all the System.dll and System.*.dll as Editor and Standalone only.
Now I get the following error (similar to what I had before:

Is tried move the MyOwnWS.cs to the Asset folder directly, but the result was the same...

Is there something to change somewhere to tell the build action to use the .Net dlls if it does not find them in the project ?

 

Yeah, I completely dropped this approach to webservice communication.
Instead I am trying to use UnityWebRequest.

But I am some problems that I posted here.

 

has anyone encountered this error in unity 5.6.0f1
APIUpdater encountered some issues and was not able to finish.


System.IO.FileNotFoundException: Could not find file "/opt/Unity/Editor/Data/Mono/lib/mono/2.0/System.xml.dll".
File name: '/opt/Unity/Editor/Data/Mono/lib/mono/2.0/System.xml.dll'
at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share, System.Int32 bufferSize, System.Boolean anonymous, System.IO.FileOptions options) [0x0021a] in <5d83a8d54e334cdc853a0dba68082096>:0
at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share) [0x00000] in <5d83a8d54e334cdc853a0dba68082096>:0
at (wrapper remoting-invoke-with-check) System.IO.FileStream:.ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare)
at System.IO.File.OpenRead (System.String path) [0x00000] in <5d83a8d54e334cdc853a0dba68082096>:0
at Roslyn.Utilities.FileUtilities.OpenFileStream (System.String path) [0x00000] in <bededc41dc2d4bfca1b18012876b04b2>:0

 

Hi Mafutta.

The problem is the name of the file.
The file should be System.xml.dll, but on filesystem the filename is System.Xml.dll.
You can rename the file to fix it or create a link.

Solution 1:
sudo mv /opt/Unity/Editor/Data/Mono/lib/mono/2.0/System.Xml.dll /opt/Unity/Editor/Data/Mono/lib/mono/2.0/System.xml.dll

Solution 2:
sudo ln -s /opt/Unity/Editor/Data/Mono/lib/mono/2.0/System.Xml.dll /opt/Unity/Editor/Data/Mono/lib/mono/2.0/System.xml.dll