How to make a Self Updating Program in VB Net

How to make a Self Updating Program in VB

Here you will learn the method, and get the routines for making a real standalone self updating program in VB Net, which you can paste into your program.

Description

The program (your .exe program) checks for updates on shutdown, it then

downloads the new .exe, which is a copy of itself, plus any changes made to it and finally

replaces itself with the new one

How it works

In the form close event, the updatecheck routine is called.

This optionally reads the registry to see if x days have elapsed and if they have

it looks for a text file on the server containing the version number in this format 1.0.0.0 or x.x.x.x

After finding and reading the file, it compares the application version to the new version and if older

it downloads the updated version to its folder and starts it.

The downloaded programs’ name must have a format like “yourprogram Update.exe”

By this time, the old program has quit and the new program is starting up.

In the form load event, the new program checks which name it has.

If its name is “yourprogram Update” then it makes a copy of the original program as .ex

It then deletes the old program and copies itself as “yourprogram.exe” after which it quits.

At the next start up it deletes the update version from the folder

What you will need

To try this out make a windows form

Add a textbox1, add a quit button

A folder on your website with a file called version.ver, containing just 1.0.0.x. The file has the ending .ver so that it doesn’t have caching problems from the server.

Your updated program with a fixed name, i.e the name cannot be different each time because it is a constant in the code.

This is critical to the functioning of the routine.

At the bottom of the code is an alternative version, which is much longer and has very little error catching.

It does however show the downloaded byte count.

Here is a link to download the source code

You will need to edit all addresses and strings, since they still point to this website

Here is a page showing the source code