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How to Open Dll Files

December 14, 2023 by admin Category: How To

You are viewing the article How to Open Dll Files  at Tnhelearning.edu.vn you can quickly access the necessary information in the table of contents of the article below.

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This article was co-written by Yaffet Meshesha. Yaffet Meshesha is a computer expert and founder of Techy, a full-service company: home pick-up, repair, and return. With over eight years of experience, Yaffet specializes in computer repair and technical support. Techy has appeared in TechCrunch and Time magazines.

This article has been viewed 63,218 times.

The Dynamic Link Library file, or DLL file, is the mainstay of traditional Windows programming. These files are used by programs to implement additional features and libraries that do not need to be further integrated into the program. Occasionally, DLL files are shared by multiple programs. For most users, DLLs work in the background and you rarely have to interact with them. But sometimes, you will need to register a DLL for the newly installed program to work properly. If you’re interested in coding, discovering how a DLL is built can be an interesting topic.

Table of Contents

  • Steps
    • Using DLLs
    • Decompile DLL files

Steps

Using DLLs

Image titled Open DLL Files Step 1

Image titled Open DLL Files Step 1

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Understand what a DLL file is. DLL (dynamic link library) is a Windows file used by programs to request available features. In essence, they allow Windows and other programs to perform their functions without having to have the feature built-in.

  • DLL files are an integral part of Windows programming, they help programs work more smoothly and efficiently.
Image titled Open DLL Files Step 2

Image titled Open DLL Files Step 2

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Normal users will not need to open or interact with the DLL file. With them, the DLL file only exists in the background. Programs will install and request DLL files automatically, so moving DLLs will cause serious problems with the system.

  • Occasionally, during the installation of some community generated programs, you will be asked to place DLL files in specific locations. Make sure you trust the program before following the instructions because the DLL file can become malicious.
  • If you’re interested in learning about how DLLs are built, see the next section.
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Image titled Open DLL Files Step 3

Image titled Open DLL Files Step 3

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Register a new DLL. If you manually copy the DLL file into the folder intended for use by the program, you will need to register the DLL in the Windows Registry before using it. Consult the documentation provided by the program to see if you need to perform this step (as this is extremely rare for most Windows programs). [1] X Research Source

  • Launch Command Prompt. You can find the program in the Start menu or press the Windows + R key combination and then type cmd . Navigate to the location of the new DLL file.
  • If you are using Windows 7 or a more advanced operating system, open the folder containing the DLL file, press the Shift key, then right-click the folder and select “Open command window here”. Command Prompt will launch directly in that folder.
  • Type regsvr32 dllname .dll and then press Enter. This will add the DLL file to the Registry window.
  • Type regsvr32 -u dllname .dll to remove the DLL file from the Registry window.

Decompile DLL files

Image titled Open DLL Files Step 4

Image titled Open DLL Files Step 4

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Download and install a recovery compiler. A “recovery compiler” is a program that allows you to see the source code used to build a file or program, in this case a DLL file. In order to see the code that makes the DLL work, you need to use a recovery compiler to decompile the file into readable code. Opening a DLL file without using a recovery compiler (such as opening the DLL file with Notepad) will just result in a jumble of unreadable characters.

  • dotPeek is one of the quite popular free recovery compilers. The software is available at jetbrains.com/decompiler/ .
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Image titled Open DLL Files Step 5

Image titled Open DLL Files Step 5

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Open the DLL file on the recovery compiler. If you use dotPeek, simply click “File” → “Open” and browse for the DLL file you want to decompile. You will discover the contents of the DLL file without affecting the system. [2] X Research Source
Image titled Open DLL Files Step 6

Image titled Open DLL Files Step 6

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Use the “Assembly Explorer” window to browse the DLL file nodes. DLL files are made of “network nodes,” or code modules that work together to make up the entire DLL file. You can expand each node to see the sub-nodes (if any) that it covers.
Image titled Open DLL Files Step 7

Image titled Open DLL Files Step 7

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Double-click a button to view its code. The code of the node you selected will appear in the right pane of dotPeek. You can scroll down from top to bottom of the code to go through it. dotPeek will display the code in C#, or it will load additional libraries so you can see the source code.

  • If the button requires additional libraries to view the code, dotPeek will attempt to download it automatically.
Image titled Open DLL Files Step 8

Image titled Open DLL Files Step 8

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Detail different code snippets. If you find a piece of code you don’t understand, you can use the Quick Documentation feature to see what the command does.

  • Place the mouse pointer over the code you need to study in the Code Viewer pane.
  • Press Ctrl + Q to load the Quick Documentation window.
  • Follow the hyperlinks to dig deeper into each aspect of the code you’re analyzing.
Image titled Open DLL Files Step 9

Image titled Open DLL Files Step 9

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Export the code to Visual Basic language. If you want to handle, edit, and build the file yourself, you can export it into Visual Studio. The code will be output in C#, even if it was originally written in another language.

  • Right-click the DLL file in the Assembly Explorer window.
  • Select “Export to Project”.
  • Select output option. You can choose to have the project open immediately in the Visual Studio tools if you want to get to work right away.
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  • Image titled Open DLL Files Step 10

    Image titled Open DLL Files Step 10

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    Edit the code in Visual Studio. Once the project has loaded in Visual Studio, you will have full control over how to edit and build the DLL according to your own ideas.
  • X

    This article was co-written by Yaffet Meshesha. Yaffet Meshesha is a computer expert and founder of Techy, a full-service company: home pick-up, repair, and return. With over eight years of experience, Yaffet specializes in computer repair and technical support. Techy has appeared in TechCrunch and Time magazines.

    This article has been viewed 63,218 times.

    The Dynamic Link Library file, or DLL file, is the mainstay of traditional Windows programming. These files are used by programs to implement additional features and libraries that do not need to be further integrated into the program. Occasionally, DLL files are shared by multiple programs. For most users, DLLs work in the background and you rarely have to interact with them. But sometimes, you will need to register a DLL for the newly installed program to work properly. If you’re interested in coding, discovering how a DLL is built can be an interesting topic.

    Thank you for reading this post How to Open Dll Files at Tnhelearning.edu.vn You can comment, see more related articles below and hope to help you with interesting information.

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