What's DLL file?
DLL stands for "Dynamic Link Library". Though there are different explanations given from Microsoft, this one could be the better one:
"A Dynamic Link Library (DLL) is a file of code containing functions that can be called from other executable code (either an application or another DLL). Programmers use DLLs to provide code that they can reuse and to parcel out distinct jobs. Unlike an executable (EXE) file, a DLL cannot be directly run. DLLs must be called from other code that is already executing."
When need to edit DLL files?
To edit DLL files is actually not as easy as you think. They are written in many languages, such as C, C++, C#, Delphi, Visual Basic, Visual Basic.Net, and so forth. So you are required a bit of computer professional skills when editing it.
• You attempt to hack it to do something other that what it was intended to do.
• You want to extract Icons from the DLLs.
• You want to reverse engineer an application.
• You are a geek and want to see what it looks like inside.
If you have the reason as above, you can try to edit the DLL file, or you are not supposed to do so. And you'd better ask technicians for help or use professional and easy DLL file editor, if you are a computer newbie.
How to edit DLL files?
There are different ways to edit DLL files. You can download a DLL editor freeware, or get a DLL resource editor, while the easiest way is to use Microsoft Visual Studio.
Launch Visual Studio and go to File > Open. Go to the .dll or .exe file you are trying to open, and before clicking Open, use the pull down at the bottom called "Open As". Scroll down to "Resource" and then open the file.
Now you'll be at a screen that has all of the available resources to you. If you want to edit an existing resource, scroll to the resource in question (HTML, String table, etc.). If you want to add or delete a resource, simply right click on the main resource and select the option. When you're all done, do a file save or save as (make sure you back up your originals!).
Easy way to fix DLL errors instead of editing it
If you just want to fix the errors that occurred in your DLL files, there is an easier way than to edit the DLL files - using a computer maintenance tool to scan out and fix the errors. Wondershare 1-Click PC Care is that kind of tool. You only need to download and install it on your computer, then it will check all errors including the DLL errors. All you need to do is to perform a click of "Fix". To avoid incorrect DLL editing, this is the best way to have a try.