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How do I register an DLL in GAC

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Hi Friends,
I have created an DLL & how do I register that DLL into GAC so that all my applns in my machine.

Vipul Mehta


Author: Abhay24 Jun 2005 Member Level: Gold   Points : 2

Review This Steps

Cheers !!!

Abhay Lakkad

Author: reshma25 Jun 2005 Member Level: Silver   Points : 2

The link that Abhay has given is good. But I would like to add something to that:

To place a dll into the GAC the following steps need to be done:

1. Generating a public key or a strong name
2. Adding the public key to the AssemblyInfo.vb file of the DLL. This step is called Signing the Assembly with a public key.
3. Build the assembly
4. Placing the dll into GAC .

1. Generating the public key:
As Abhay said, go to visualStudio.Net command prompt and type the following command:

sn -k keyfile1.snk
Here keyfile1.snk is the keyfile we are generating.

You can store this key file in the bin folder of the assembly. In order to do this u have to go to the bin folder. For example:
C:\foldername\assemblyname\bin sn-k keyfile1.snk

By doing this the keyfile is stored in the bin folder.

2. Placing the keyfile into the Assembly.
Go to AssemblyInfo.vb file:
<Assembly: AssemblyKeyFile("C:\foldername\assemblyname\\keyfile1.snk")>
3. Build the Assembly.

4. Placing the assembly into GAC

There are two way in which u can place the assembly into GAC.
1. Using the utility gacutil -i
Here you should give the complete path of the dll

c:\>gactutil -i c:\foldername\assemblyname\bin\assemblyname.dll

2. The second method is u can drag the .dll file from the bin folder of the assembly and drop it into the folder C:\winnt\Assembly

Doing this is same ie placing assembly into GAC.

Good Luck.