VB Compression Unzip the DB file

In the computer window (or other), click on Tools - Folders Options, view tabs, select Show all files and folders under Hide Files & Folders, and unhide protected ...... if necessary (system hidden files).

To see if it is hidden, open "My Computer" - "Tools" - "Folder Options" - "View" - uncheck "Hide Protected OS Files (Recommended)" and click "Show All Files and Folders" in "Advanced Settings" and confirm.

The unzipped folder must have a capacity so that it is not empty. If you just can't see the file, but there is capacity, it's hidden.

It is recommended to use the free DOS version of the RAR program, and then use the shell"Command line"I did it, and it's a lot easier to do.

Find the file named ", open it to install, press 1 for the CD serial number, and fill it all the way. Finally, it prompts to install MSDN, install it if you have it, and you can do it without canceling the checkbox.

No, it has to do with your CPU and your hard drive, memory speed. Of course, it also has to do with the compression ratio.

Throwing out the file size to be decompressed, the most important thing that affects the decompression speed is the performance of the computer, in fact, it is the processing speed of the CPU, and the memory cannot be ignored. However, it has nothing to do with the speed of the Internet, so you can decompress even when you don't have an Internet connection.

Pressurized files don't require internet speed!

Definitely not needed anymore, just a decompression tool.

In VB, you can use the shell to call compression in the winrar directory) or uncompress). For specific parameters, see Winrar's description.

You can copy these two files to the directory where your program is located for easy use.

For example, unzip a file:

shell " x -inul ",vbhide

You can call a zip dll (e.g.

Then just reference and call the relevant function.

Winrar is the best and ** simple you can decompress (and compress (files into the resource size is only 700kb, if the user does not have a file, you can release these 2 files to temp or the same directory as the program. Then unzip the RAR, ZIP, etc. you want After all, WinRAR supports more formats. Stable again.

Pillow good dwelling with examples.

Note This is an example of using VB to manipulate a RAR file, using a file (the file is in a compressed package, please copy it to the system32 directory of your system), support compressed file viewing, and decompress the password protected RAR file.

Do you want to develop your own compression software?

Double-click, the system already has a tool, point self-extraction, it decompresses itself. Or right-click and you can see that the command is there.