2
Answers

Add reference to the Dll from Another Dll

sathish kumar

sathish kumar
9y
351
1
Hi All...
Am developed C# application for creating dll for some functionality,am creating two dll's at a time,for example Dll A and Dll B.
This Dll A is reference of Dll B.
So how to call Dll A from Dll B.
Am using following code for this, but i got error message.

the Code is
 
public class Proxy : MarshalByRefObject
{
public Assembly GetAssembly(string assemblyPath)
{
try
{
return Assembly.LoadFile(assemblyPath);
}
catch (Exception)
{
return null;
// throw new InvalidOperationException(ex);
}
}
}
 
 
string dynamicClassPath = File Path;
AppDomain domains = AppDomain.CreateDomain("New domain name");
Type type = typeof(Proxy);
Proxy myObject = (Proxy)domains.CreateInstanceFromAndUnwrap(dynamicClassPath, type .FullName);
 
and the error is

Quote:
Could not load type 'FolderName.FileName+Proxy' from assembly 'Dynamic_id, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.

here 
Dynamic_id
is a dll.
 
for deep explanation
 
Dll A and B both are created dynamically.
The Following code in Dll A
 
using System;
namespace ForTest
{
public class Dynamic_Val_001
{
private string _Prop_Name;
private string _Prop_Address;
public virtual string Prop_Name
{
get
{
return this._Prop_Name;
}
set
{
this._Prop_Name = value;
}
}
public virtual string Prop_Address
{
get
{
return this._Prop_Address;
}
set
{
this._Prop_Address = value;
}
}
}
}
the Dll B code is
using System;
namespace ForTest
{
public class Val_001
{
public virtual Tuple<bool, string> isValid(Dynamic_Val_001)
{
return new Tuple<bool, string>(false, "Success");
}
}
}
Now the Dll B have a one tuple bool function with one parameter, In that parameter is Dll A class name,so Dll B is depends on dll A.
So how to Call that Dll A class from Dll B.
so pls help me how to do this??
sorry my poor English. 
Answers (2)
0
sathish kumar

sathish kumar

NA 9 4.2k 9y
Hi Praveen, 
 Thanks for your reply. 
   But in my situation,  it is not a DLL Hell Problem because am creating 2 dlls  at a time with a different name and different functionality and also in this dlls are not added in Registry Editor, it's saved only my application folder.
   I want Add Reference from A DLL to B DLL.
 
   public virtual Tuple<bool, string> isValid(Dynamic_Val_001)
   {
      return new Tuple<bool, string>(false, "Success");
   }
 
Dynamic_Val_001  is A DLL Class Name 
 
    
 
 
0
Praveen Dhatrika

Praveen Dhatrika

NA 840 2.1k 9y
To my understanding I think its like DLL HELL problem.
 
This kind of scenerio is generally termed as dllhell problem. 
Here is what it is,
 
1. I have 2 applications, A1 and A2 installed on my computer.

2. Both of these applications use shared assembly shared.dll

3. Now, I have a latest version of Application - A2 available on the internet.

4. I download the latest version of A2 and install it on my machine.

5. This new installation has over written Shared.dll, which is also used by Application - A1.

6. Application - A2 works fine, but A1 fails to work, because the newly installed Shared.dll is not backward compatible.

So, DLL HELL is a problem where one application will install a new version of the shared component that is not backward compatible with the version already on the machine, causing all the other existing applications that rely on the shared component to break. With .NET versioning we donot have DLL HELL problem any more.
 
also go through these links 
http://csharp-video-tutorials.blogspot.com/2012/07/dll-hell-part-6.html
http://venkataspinterview.blogspot.co.uk/2011/05/what-is-dll-hell-in-net.html 
http://csharp-video-tutorials.blogspot.com/2012/07/how-is-dll-hell-problem-solved-part-7.html
http://venkataspinterview.blogspot.co.uk/2011/06/how-is-dll-hell-problem-solved-in-net.html 
 If you find my post as useful then accept my reply as answer. :)
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