How do you reference different versions of the same?
If you have multiple versions of an assembly in a directory and you want to reference a particular version of that assembly, you must use the element instead of the privatePath attribute of the element.
How do I use two versions of the same DLL in the same project?
Under , add a tag for each version of the DLL. This will resolve the runtime assembly loading conflict. That’s it, now we can use both versions as we please.
How do I reference a DLL?
Referencing DLLs
- In the Solution Explorer pane, right-click your project, then click Add Reference.
- In the Add Reference window, click the Browse tab.
- In the drop-down list, find the folder for FileNet.
- Select the DLL file.
- Click OK.
What is extern alias in C#?
By using an external assembly alias, the namespaces from each assembly can be wrapped inside root-level namespaces named by the alias, which enables them to be used in the same file. The extern keyword is also used as a method modifier, declaring a method written in unmanaged code.
What is dll reference?
Introduction. A Dynamic Link library (DLL) is a library that contains functions and codes that can be used by more than one program at a time. Once we have created a DLL file, we can use it in many applications. The only thing we need to do is to add the reference/import the DLL File.
What is the difference between project reference and dll reference?
Well, project references are helpful when you are building and testing in both debug and release mode. If you directly add a DLL then you are locked into whatever that particular DLL was built as. The project reference allows this to be a build time decision.
What is the difference between project reference and DLL reference?
How do I get a DLL PublicKeyToken?
Find public key token value of an assembly file
- Open Visual Studio Command Prompt (Start > Visual Studio > Visual Studio Tools > Developer Command Prompt)
- Run the command below. It will display both public key token and public key. Make sure to replace C:\Temp\Oracle. DataAccess. dll with the full path of your DLL file.
What is PublicKeyToken in app config?
The public key token is a 64-bit hash of the public key which corresponds to the private key used to sign the assembly. It’s used to make an assembly name unique, so two strongly named assemblies can have the same filename, but . NET will treat them as different assemblies.
How to add a reference to an old DLL?
Create a folder for the old DLL, let’s say wnv-old, and put it there. Add a reference to the old DLL. Every reference we add to the project will have the “global” alias by default. For this duplicate reference we’ll change the alias so we can differentiate the namespaces.
What happens if you have two versions of the same DLL?
Both libraries have the same namespace, causing ambiguity the compiler can’t handle. It won’t run. The referenced DLLs are copied to the output dir, but because they have the same name, they will override each other, and will cause the runtime loading of the assembly to have a version mismatch. Welcome to DLL hell.
How to tell if a DLL is backwards compatible?
If you’re lucky, the developer of the third-party component used semantic versioning and you can tell whether the DLLs are backwards compatible or not just from looking at their version numbers.
Why do database updates need their own DLL?
Each database update will be its own DLL, and needs to retain a dependency on a specific version of our Domain DLL (the current one at the time the update was written). For example: