C# dll in VB6 app

[Tony]

I've seen several messages and read through them and MANY websites and
various MSDN items and still don't have a solution.

I made a dll in C# from the code below for testing


using System;
using System.Runtime.InteropServices; // necessary library to use COM
attributes

namespace mcMath
{
/// <summary>
/// Summary description for Class1.
/// </summary>
///
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

public class mcMathComp
{
private bool bTest = false;

public mcMathComp()
{
//
// TODO: Add constructor logic here
//
}
/// <summary>
/// //This is a test method
/// </summary>
public void mcTestMethod()
{

}
public long Add(long val1, long val2)
{
return val1 + val2;
}
/// <summary>
/// //This is a test property
/// </summary>
public bool Extra
{
get
{
return bTest;
}
set
{
bTest = value;
}
}
}
}


From the various sites and info I've read, I added the interop using
lline and also the three lines
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

The guid string I got from having the code for the dll open and going
to Tools > Create UID and chose Registry Format

I then dropped to command line and ran
C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug>C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\REGASM.exe
mcmath.dll /tlb:mcmath.pdb

After all that, I could finally see it to add it as a reference to a
vb6 app, but when I do, the actual methods aren't available.. only
thing I have are things like tostring and gethash ..

I did some more reading and found some info to do the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: Attempt to install an assembly
without a strong name
----

Did some more reading and then did the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>sn -k
"C:\Documents andSettings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"

Microsoft (R) .NET Framework Strong Name Utility Version 2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Key pair written to C:\Documents and Settings\Tonyk\My
Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll
----

Great, I thought... Now I can do the gacutil again and be home free.
wrong...


C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Docum
ents and Settings\Tonyk\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\b
in\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version
2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: The module was expected to
contain an assembly manifest.

---

After every task leading to another task in my effort to get a C# .dll
to run under VB6, I'm begining to think maybe I'm following the wrong
trail of bread crumbs and this should be a lot simplier than I'm
finding?


In the end, I'm looking to use a .Net component in C# and pop the code
into a .dll that a vb6 app can use

Help?

-Tony!-

 

[sloan]

This may or may not help.

I had it bookmarked.

http://msdn.microsoft.com/vbrun/vbfusion/usingnet/default.aspx

I've seen several messages and read through them and MANY websites and
various MSDN items and still don't have a solution.

I made a dll in C# from the code below for testing


using System;
using System.Runtime.InteropServices; // necessary library to use COM
attributes

namespace mcMath
{
/// <summary>
/// Summary description for Class1.
/// </summary>
///
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

public class mcMathComp
{
private bool bTest = false;

public mcMathComp()
{
//
// TODO: Add constructor logic here
//
}
/// <summary>
/// //This is a test method
/// </summary>
public void mcTestMethod()
{

}
public long Add(long val1, long val2)
{
return val1 + val2;
}
/// <summary>
/// //This is a test property
/// </summary>
public bool Extra
{
get
{
return bTest;
}
set
{
bTest = value;
}
}
}
}


From the various sites and info I've read, I added the interop using
lline and also the three lines
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

The guid string I got from having the code for the dll open and going
to Tools > Create UID and chose Registry Format

I then dropped to command line and ran
C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug>C:\WINDOWS\Microsoft.NET\Framework\v2.
0.50727\REGASM.exe
mcmath.dll /tlb:mcmath.pdb

After all that, I could finally see it to add it as a reference to a
vb6 app, but when I do, the actual methods aren't available.. only
thing I have are things like tostring and gethash ..

I did some more reading and found some info to do the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: Attempt to install an assembly
without a strong name
----

Did some more reading and then did the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>sn -k
"C:\Documents andSettings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"

Microsoft (R) .NET Framework Strong Name Utility Version 2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Key pair written to C:\Documents and Settings\Tonyk\My
Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll
----

Great, I thought... Now I can do the gacutil again and be home free.
wrong...


C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Docum
ents and Settings\Tonyk\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\b
in\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version
2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: The module was expected to
contain an assembly manifest.

---

After every task leading to another task in my effort to get a C# .dll
to run under VB6, I'm begining to think maybe I'm following the wrong
trail of bread crumbs and this should be a lot simplier than I'm
finding?


In the end, I'm looking to use a .Net component in C# and pop the code
into a .dll that a vb6 app can use

Help?

-Tony!-

 

[Jon Davis]

Your GAC error related to the missing assembly manifest. Did you look into
that?

Regardless, GAC installation is not used by the COM registration system that
VB6 uses, it is only used by other .NET assemblies for global invocation
rather than file-based invocation. You need to use regasm.exe to register
your .NET solution as a COM component / control that VB6 can use.

Jon

I've seen several messages and read through them and MANY websites and
various MSDN items and still don't have a solution.

I made a dll in C# from the code below for testing


using System;
using System.Runtime.InteropServices; // necessary library to use COM
attributes

namespace mcMath
{
/// <summary>
/// Summary description for Class1.
/// </summary>
///
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

public class mcMathComp
{
private bool bTest = false;

public mcMathComp()
{
//
// TODO: Add constructor logic here
//
}
/// <summary>
/// //This is a test method
/// </summary>
public void mcTestMethod()
{

}
public long Add(long val1, long val2)
{
return val1 + val2;
}
/// <summary>
/// //This is a test property
/// </summary>
public bool Extra
{
get
{
return bTest;
}
set
{
bTest = value;
}
}
}
}


From the various sites and info I've read, I added the interop using
lline and also the three lines
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

The guid string I got from having the code for the dll open and going
to Tools > Create UID and chose Registry Format

I then dropped to command line and ran
C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug>C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\REGASM.exe
mcmath.dll /tlb:mcmath.pdb

After all that, I could finally see it to add it as a reference to a
vb6 app, but when I do, the actual methods aren't available.. only
thing I have are things like tostring and gethash ..

I did some more reading and found some info to do the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: Attempt to install an assembly
without a strong name
----

Did some more reading and then did the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>sn -k
"C:\Documents andSettings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"

Microsoft (R) .NET Framework Strong Name Utility Version 2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Key pair written to C:\Documents and Settings\Tonyk\My
Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll
----

Great, I thought... Now I can do the gacutil again and be home free.
wrong...


C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Docum
ents and Settings\Tonyk\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\b
in\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version
2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: The module was expected to
contain an assembly manifest.

---

After every task leading to another task in my effort to get a C# .dll
to run under VB6, I'm begining to think maybe I'm following the wrong
trail of bread crumbs and this should be a lot simplier than I'm
finding?


In the end, I'm looking to use a .Net component in C# and pop the code
into a .dll that a vb6 app can use

Help?

-Tony!-

 

[Tony]

I tried the regasm bit (see down near bottom of my orig post).

It worked but when I instantiate an object using the dll in vb6 all
the methods and properties object.notation shows is "Equals"
"GetHashCode", "GetType", and "ToString"

-Tony!-

Your GAC error related to the missing assembly manifest. Did you look into
that?

Regardless, GAC installation is not used by the COM registration system that
VB6 uses, it is only used by other .NET assemblies for global invocation
rather than file-based invocation. You need to use regasm.exe to register
your .NET solution as a COM component / control that VB6 can use.

Jon

I've seen several messages and read through them and MANY websites and
various MSDN items and still don't have a solution.

I made a dll in C# from the code below for testing


using System;
using System.Runtime.InteropServices; // necessary library to use COM
attributes

namespace mcMath
{
/// <summary>
/// Summary description for Class1.
/// </summary>
///
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

public class mcMathComp
{
private bool bTest = false;

public mcMathComp()
{
//
// TODO: Add constructor logic here
//
}
/// <summary>
/// //This is a test method
/// </summary>
public void mcTestMethod()
{

}
public long Add(long val1, long val2)
{
return val1 + val2;
}
/// <summary>
/// //This is a test property
/// </summary>
public bool Extra
{
get
{
return bTest;
}
set
{
bTest = value;
}
}
}
}


From the various sites and info I've read, I added the interop using
lline and also the three lines
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

The guid string I got from having the code for the dll open and going
to Tools > Create UID and chose Registry Format

I then dropped to command line and ran
C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug>C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\REGASM.exe
mcmath.dll /tlb:mcmath.pdb

After all that, I could finally see it to add it as a reference to a
vb6 app, but when I do, the actual methods aren't available.. only
thing I have are things like tostring and gethash ..

I did some more reading and found some info to do the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: Attempt to install an assembly
without a strong name
----

Did some more reading and then did the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>sn -k
"C:\Documents andSettings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"

Microsoft (R) .NET Framework Strong Name Utility Version 2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Key pair written to C:\Documents and Settings\Tonyk\My
Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll
----

Great, I thought... Now I can do the gacutil again and be home free.
wrong...


C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Docum
ents and Settings\Tonyk\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\b
in\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version
2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: The module was expected to
contain an assembly manifest.

---

After every task leading to another task in my effort to get a C# .dll
to run under VB6, I'm begining to think maybe I'm following the wrong
trail of bread crumbs and this should be a lot simplier than I'm
finding?


In the end, I'm looking to use a .Net component in C# and pop the code
into a .dll that a vb6 app can use

Help?

-Tony!-

 

[Jon Davis]

That link is completely dependent upon an "FCL" which appears to be a
downloadable type library that VB6 can call to invoke .NET assemblies. No
offense but I wouldn't recommend that to someone who is trying to learn
fundamentally how to expose their .NET solution directly to COM.

Jon

This may or may not help.

I had it bookmarked.

http://msdn.microsoft.com/vbrun/vbfusion/usingnet/default.aspx

I've seen several messages and read through them and MANY websites and
various MSDN items and still don't have a solution.

I made a dll in C# from the code below for testing


using System;
using System.Runtime.InteropServices; // necessary library to use COM
attributes

namespace mcMath
{
/// <summary>
/// Summary description for Class1.
/// </summary>
///
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

public class mcMathComp
{
private bool bTest = false;

public mcMathComp()
{
//
// TODO: Add constructor logic here
//
}
/// <summary>
/// //This is a test method
/// </summary>
public void mcTestMethod()
{

}
public long Add(long val1, long val2)
{
return val1 + val2;
}
/// <summary>
/// //This is a test property
/// </summary>
public bool Extra
{
get
{
return bTest;
}
set
{
bTest = value;
}
}
}
}


From the various sites and info I've read, I added the interop using
lline and also the three lines
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

The guid string I got from having the code for the dll open and going
to Tools > Create UID and chose Registry Format

I then dropped to command line and ran
C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug>C:\WINDOWS\Microsoft.NET\Framework\v2.
0.50727\REGASM.exe
mcmath.dll /tlb:mcmath.pdb

After all that, I could finally see it to add it as a reference to a
vb6 app, but when I do, the actual methods aren't available.. only
thing I have are things like tostring and gethash ..

I did some more reading and found some info to do the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: Attempt to install an assembly
without a strong name
----

Did some more reading and then did the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>sn -k
"C:\Documents andSettings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"

Microsoft (R) .NET Framework Strong Name Utility Version 2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Key pair written to C:\Documents and Settings\Tonyk\My
Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll
----

Great, I thought... Now I can do the gacutil again and be home free.
wrong...


C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Docum
ents and Settings\Tonyk\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\b
in\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version
2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: The module was expected to
contain an assembly manifest.

---

After every task leading to another task in my effort to get a C# .dll
to run under VB6, I'm begining to think maybe I'm following the wrong
trail of bread crumbs and this should be a lot simplier than I'm
finding?


In the end, I'm looking to use a .Net component in C# and pop the code
into a .dll that a vb6 app can use

Help?

-Tony!-

 

[Jon Davis]

Sorry, I missed it, see it now.

For what it's worth I'd say restart your research with these links:

http://msdn.microsoft.com/netframew...brary/en-us/dndotnet/html/useframewktools.asp

http://msdn.microsoft.com/msdnmag/issues/01/08/Interop/

http://msdn.microsoft.com/netframew.../library/en-us/dndotnet/html/callnetfrcom.asp

Forgive me for not knowing the quick answer to your problem.

- Jon

I tried the regasm bit (see down near bottom of my orig post).

It worked but when I instantiate an object using the dll in vb6 all
the methods and properties object.notation shows is "Equals"
"GetHashCode", "GetType", and "ToString"

-Tony!-

Your GAC error related to the missing assembly manifest. Did you look into
that?

Regardless, GAC installation is not used by the COM registration system
that
VB6 uses, it is only used by other .NET assemblies for global invocation
rather than file-based invocation. You need to use regasm.exe to register
your .NET solution as a COM component / control that VB6 can use.

Jon

I've seen several messages and read through them and MANY websites and
various MSDN items and still don't have a solution.

I made a dll in C# from the code below for testing


using System;
using System.Runtime.InteropServices; // necessary library to use COM
attributes

namespace mcMath
{
/// <summary>
/// Summary description for Class1.
/// </summary>
///
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

public class mcMathComp
{
private bool bTest = false;

public mcMathComp()
{
//
// TODO: Add constructor logic here
//
}
/// <summary>
/// //This is a test method
/// </summary>
public void mcTestMethod()
{

}
public long Add(long val1, long val2)
{
return val1 + val2;
}
/// <summary>
/// //This is a test property
/// </summary>
public bool Extra
{
get
{
return bTest;
}
set
{
bTest = value;
}
}
}
}


From the various sites and info I've read, I added the interop using
lline and also the three lines
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

The guid string I got from having the code for the dll open and going
to Tools > Create UID and chose Registry Format

I then dropped to command line and ran
C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug>C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\REGASM.exe
mcmath.dll /tlb:mcmath.pdb

After all that, I could finally see it to add it as a reference to a
vb6 app, but when I do, the actual methods aren't available.. only
thing I have are things like tostring and gethash ..

I did some more reading and found some info to do the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: Attempt to install an assembly
without a strong name
----

Did some more reading and then did the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>sn -k
"C:\Documents andSettings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"

Microsoft (R) .NET Framework Strong Name Utility Version 2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Key pair written to C:\Documents and Settings\Tonyk\My
Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll
----

Great, I thought... Now I can do the gacutil again and be home free.
wrong...


C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Docum
ents and Settings\Tonyk\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\b
in\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version
2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: The module was expected to
contain an assembly manifest.

---

After every task leading to another task in my effort to get a C# .dll
to run under VB6, I'm begining to think maybe I'm following the wrong
trail of bread crumbs and this should be a lot simplier than I'm
finding?


In the end, I'm looking to use a .Net component in C# and pop the code
into a .dll that a vb6 app can use

Help?

-Tony!-

 

[Tony]

Heck.. I appreciate any help at all

Tony!

Sorry, I missed it, see it now.

For what it's worth I'd say restart your research with these links:

http://msdn.microsoft.com/netframew...brary/en-us/dndotnet/html/useframewktools.asp

http://msdn.microsoft.com/msdnmag/issues/01/08/Interop/

http://msdn.microsoft.com/netframew.../library/en-us/dndotnet/html/callnetfrcom.asp

Forgive me for not knowing the quick answer to your problem.

- Jon

I tried the regasm bit (see down near bottom of my orig post).

It worked but when I instantiate an object using the dll in vb6 all
the methods and properties object.notation shows is "Equals"
"GetHashCode", "GetType", and "ToString"

-Tony!-

Your GAC error related to the missing assembly manifest. Did you look into
that?

Regardless, GAC installation is not used by the COM registration system
that
VB6 uses, it is only used by other .NET assemblies for global invocation
rather than file-based invocation. You need to use regasm.exe to register
your .NET solution as a COM component / control that VB6 can use.

Jon

I've seen several messages and read through them and MANY websites and
various MSDN items and still don't have a solution.

I made a dll in C# from the code below for testing


using System;
using System.Runtime.InteropServices; // necessary library to use COM
attributes

namespace mcMath
{
/// <summary>
/// Summary description for Class1.
/// </summary>
///
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

public class mcMathComp
{
private bool bTest = false;

public mcMathComp()
{
//
// TODO: Add constructor logic here
//
}
/// <summary>
/// //This is a test method
/// </summary>
public void mcTestMethod()
{

}
public long Add(long val1, long val2)
{
return val1 + val2;
}
/// <summary>
/// //This is a test property
/// </summary>
public bool Extra
{
get
{
return bTest;
}
set
{
bTest = value;
}
}
}
}


From the various sites and info I've read, I added the interop using
lline and also the three lines
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

The guid string I got from having the code for the dll open and going
to Tools > Create UID and chose Registry Format

I then dropped to command line and ran
C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug>C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\REGASM.exe
mcmath.dll /tlb:mcmath.pdb

After all that, I could finally see it to add it as a reference to a
vb6 app, but when I do, the actual methods aren't available.. only
thing I have are things like tostring and gethash ..

I did some more reading and found some info to do the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: Attempt to install an assembly
without a strong name
----

Did some more reading and then did the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>sn -k
"C:\Documents andSettings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"

Microsoft (R) .NET Framework Strong Name Utility Version 2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Key pair written to C:\Documents and Settings\Tonyk\My
Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll
----

Great, I thought... Now I can do the gacutil again and be home free.
wrong...


C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Docum
ents and Settings\Tonyk\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\b
in\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version
2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: The module was expected to
contain an assembly manifest.

---

After every task leading to another task in my effort to get a C# .dll
to run under VB6, I'm begining to think maybe I'm following the wrong
trail of bread crumbs and this should be a lot simplier than I'm
finding?


In the end, I'm looking to use a .Net component in C# and pop the code
into a .dll that a vb6 app can use

Help?

-Tony!-

 

[Phil Wilson]

This is what looks wrong to me:

1. If you're using ClassInterfaceType.None it means that no class interface
is generated, and that means you have to define an interface and implement
it. See this:
http://blogs.gotdotnet.com/heaths/archive/2005/03/09/391358.aspx

Define your interface and have the class implement it. This is basically why
none of your methods are showing up.

2. Getting it registered is nothing to do with the GAC. Use regasm to
register using regasm <path to assembly> and add /codebase if you want to
use from a non-GAC location. The GAC is a deploymemt choice, not a
requirement for registered .NET COM classes to be available.

3. Generating a type library is primarily for design time. It so happens
that running regasm to register the assembly will register the COM class
interfaces as well as the type library, but the type library is mainly a
development help in this situation because that's what you browse for in the
VB IDE to find COM references. For a program to use the COM classes at run
time, regasm <assembly> /codebase is fine.
--
Phil Wilson
[Microsoft MVP-Windows Installer]

I've seen several messages and read through them and MANY websites and
various MSDN items and still don't have a solution.

I made a dll in C# from the code below for testing


using System;
using System.Runtime.InteropServices; // necessary library to use COM
attributes

namespace mcMath
{
/// <summary>
/// Summary description for Class1.
/// </summary>
///
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

public class mcMathComp
{
private bool bTest = false;

public mcMathComp()
{
//
// TODO: Add constructor logic here
//
}
/// <summary>
/// //This is a test method
/// </summary>
public void mcTestMethod()
{

}
public long Add(long val1, long val2)
{
return val1 + val2;
}
/// <summary>
/// //This is a test property
/// </summary>
public bool Extra
{
get
{
return bTest;
}
set
{
bTest = value;
}
}
}
}


From the various sites and info I've read, I added the interop using
lline and also the three lines
[ComVisible(true)]
[ProgId("mcMath.mcMath")]
[Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
[ClassInterface(ClassInterfaceType.None)]

The guid string I got from having the code for the dll open and going
to Tools > Create UID and chose Registry Format

I then dropped to command line and ran
C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug>C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\REGASM.exe
mcmath.dll /tlb:mcmath.pdb

After all that, I could finally see it to add it as a reference to a
vb6 app, but when I do, the actual methods aren't available.. only
thing I have are things like tostring and gethash ..

I did some more reading and found some info to do the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: Attempt to install an assembly
without a strong name
----

Did some more reading and then did the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>sn -k
"C:\Documents andSettings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"

Microsoft (R) .NET Framework Strong Name Utility Version 2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Key pair written to C:\Documents and Settings\Tonyk\My
Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll
----

Great, I thought... Now I can do the gacutil again and be home free.
wrong...


C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Docum
ents and Settings\Tonyk\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\b
in\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility. Version
2.0.50727.42
Copyright (c) Microsoft Corporation. All rights reserved.

Failure adding assembly to the cache: The module was expected to
contain an assembly manifest.

---

After every task leading to another task in my effort to get a C# .dll
to run under VB6, I'm begining to think maybe I'm following the wrong
trail of bread crumbs and this should be a lot simplier than I'm
finding?


In the end, I'm looking to use a .Net component in C# and pop the code
into a .dll that a vb6 app can use

Help?

-Tony!-