How to make sure your DLLs are not trial ones

To ensure DLL references of paid libraries for production ready environment are not trial ones, we first need to know what are DLLs assemblies and how you can use in your .Net projects?

What is a DLL file?

DLL stands for Dynamic Link Library is a type of file that has some information related to a program that calls upon using other program and perform operations based on their program instructions. We can easily store multiple program instructions in DLLs to use with another program to extends his capabilities and functions. DLLs contain code and data that can be used in numerous programs at the same time. We mostly use DLLs in programs to extends their capabilities and functions. We mainly use DLLs in .NET applications as a reference for some functionalities. For example, Entity framework in any .NET applications perform operations of ORM (Object Relational Mapping).

DLLs are very useful; it helps modularize the application. You can use it to break down the Large applications into smaller parts and use as a DLL to fast the execution of a program. For example, in an ERP application, you can create a Financial module as a separate module and create a DLL of this module to integrate its functionalities to large ERP applications. DLLs helps to fast the load time of the program. You can also incorporate different modules at run time to load the functionality of that DLL only when the main application needs it.

You can easily update each module without affecting the other modules. This approach helps you organize projects better, especially the large ones. Following are the examples of some DLLs that helps you to integrate some features and functionalities in your main program:

  • System.Data.dll: access to the classes of ADO.Net architecture.
  • Componentpro.Ftp.dll: access to the FTP function.
  • Componentpro.Sftp.dll: Add SSH Secure File Transfer capability to your apps.

Now we discuss the advantages of DLLs files.

Advantages of DLLs Files

Here are the advantages of DLLs files:

  • It promotes the modular approach. It helps you to follow modular architecture in your application. You can easily create separate modules and integrate them into your applications.
  • It uses fewer resources when we group the functionality that is used in multiple modules in some DLLs files, avoiding duplicate code in the modules and less memory footprint.

DLL Dependencies

At the point when a program or a DLL utilizes a DLL work in another DLL, a reliance is formed. If a DLL is changed, like the version updated, the strong name key updated, etc., the main program may encounter issues, and it might throw an exception in runtime.

These issues are commonly known as DLL conflicts. If backward compatibility of DLL is not ensuring, the program may not work as expected.

How to add DLLs to your .NET Applications?

There are two ways to add Ultimate DLL references to your .NET applications:

  • Browse and add reference: Use this old-fashioned way when you only have our DLLs or the version of the DLLs is not listed on nuget.org. You can right-click on the Dependencies or References item in a project and click on Add References. Then browse to the folder where the DLLs reside and add them.
  • Add them from nuget.org: You can browse our ultimate modules on nuget.org site and add to your project's Dependencies. Our build system uploads the packages to that site whenever our DLLs pass the release criteria, including unit, UI, and manual tests.
  • From your Nuget site: To do this, you need to download the NuGet server package from nuget.org, host it on your server, then pack and upload our DLLs using the Nuget tool.

How to make Sure your DLLs are not the trial ones

It's crucial not to deploy trial assemblies to your production environment mistakenly. To avoid that mistake, please follow the steps below:

  • Uninstall the Trial setup package completely
  • Install the licensed setup package downloaded in Account area: https://www.componentpro.com/account
  • Replace all DLLs in your bin folder with the installed ones. Depending on your .NET Framework version, you will need to copy the DLLs in Bin\Net or Bin\Net4_0 folder
  • Before deploying, make sure the File description of DLL does not contain "Trial" phrase. The following image shows an example of the file description of a Trial ComponentPro.Sftp.dll
  • Rebuild your application to make sure it references to the latest DLLs.

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