Functionality dll file

Not Helpful 9 Helpful Do I need to save a DLL file in order for the program to work correctly? If so, how do I do that? Just make a copy of that file. DLL files are necessary, do not delete it, or else a lot of stuff will break. Not Helpful 8 Helpful Include your email address to get a message when this question is answered. You Might Also Like How to. How to. Computer Specialist. Expert Interview. About This Article. Co-authored by:. Yaffet Meshesha.

Co-authors: Updated: December 20, Categories: File Manipulation. Article Summary X 1. Italiano: Aprire i File. Nederlands: DLL bestanden openen. Thanks to all authors for creating a page that has been read 2,, times. I needed to be able to reproduce the issue more directly than through the web page, but I had no idea how the methods were being called.

This article helped me find the tool I needed to decompile the DLL and understand how it was working. Rated this article:. More reader stories Hide reader stories. Is this article up to date? Cookies make wikiHow better. By continuing to use our site, you agree to our cookie policy. Rhys Edwards Sep 24, Anonymous Nov 24, Thank you. Rohit Tulsyani Sep 16, Sierra Detwiler Mar 17, Anonymous Sep 25, Share yours! More success stories Hide success stories.

Featured Articles How to. Trending Articles How to. New Pages How to. Watch Articles How to. By signing up you are agreeing to receive emails according to our privacy policy. Follow Us. We've got the tips you need Subscribe You're all set! Please reply to polioej auburn. Thanks much. Mike P. It sounds like your. NET Framework installation is corrupted.

The file should not be updated by anything except the. NET Framework installer, since this file is installed once-per-machine no matter how many frameworks. If this was installed as part of the OS e. Windows setup utility. Ask a question. With the introduction of the. NET Framework, most dependency problems have been eliminated by using assemblies.

A DLL is a library that contains code and data that can be used by more than one program at the same time. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. Each program can use the functionality that is contained in this DLL to implement an Open dialog box. It helps promote code reuse and efficient memory usage. By using a DLL, a program can be modularized into separate components.

For example, an accounting program may be sold by module. Each module can be loaded into the main program at run time if that module is installed. Because the modules are separate, the load time of the program is faster. And a module is only loaded when that functionality is requested. Additionally, updates are easier to apply to each module without affecting other parts of the program. For example, you may have a payroll program, and the tax rates change each year.

When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again. The following list describes some of the files that are implemented as DLLs in Windows operating systems:.

An example of an ActiveX control is a calendar control that lets you select a date from a calendar. An example of a. Each item is a specialized DLL. When multiple programs use the same library of functions, a DLL can reduce the duplication of code that is loaded on the disk and in physical memory. It can greatly influence the performance of not just the program that is running in the foreground, but also other programs that are running on the Windows operating system.

A DLL helps promote developing modular programs. It helps you develop large programs that require multiple language versions or a program that requires modular architecture. An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time.

Additionally, if multiple programs use the same DLL, the multiple programs will all benefit from the update or the fix. This issue may more frequently occur when you use a third-party DLL that is regularly updated or fixed. The program is no longer self-contained, and the program may experience problems if the dependency is broken.

For example, the program may not run if one of the following actions occurs:. These actions are known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run. The following list describes the changes that have been introduced in Windows and in later Windows operating systems to help minimize dependency issues:. In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent.

Private DLLs use version-specific information or an empty. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty.

Each method tells the operating system to use the private DLLs that are located in the program root folder. Several tools are available to help you troubleshoot DLL problems. The following tools are some of these tools. When you open a program in Dependency Walker, Dependency Walker does the following checks:. It may help prevent and correct DLL problems that may occur in the future. Dependency Walker is located in the following directory when you install Visual Studio 6.

The following list describes the utilities that make up the DUPS tool:. This utility enumerates all the DLLs on the computer and logs the information to a text file or to a database file. This utility compares the DLLs that are listed in two text files and produces a third text file that contains the differences.