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I have a stable production version of software which always has version number "1.X.0". We don't have any testing environment so I created a development version with version number "1.X.Y" for testing purposes. I test this version on production computer before releasing new production version (1.X+1.0)

This works fine, there are safety measures in place so that they cannot get mixed up. I also created automatic update for both versions using 

startInfo.Arguments = string.Format("/passive /norestart /i \"{0}\"  TARGETDIR=\"{1}\"", msiPath, installDirectory);

installDirectory is different for production and development version.

The problem is this:

The upgrade code is the same for both versions. I don't want to switch between upgrade codes. I also set RemovePreviousVersion to false, because I don't want to have version 1.X.0 removed, when installing version 1.X.Y. Is it possible to have versions 1.X.0 and 1.X.Y on the same computer at the same time and when version 1.X.0 gets upgraded to version 1.X+1.0, only 1.X.0 is uninstalled? The same should apply for 1.X.Y version.

Or is there a better way to handle this? Thank you

d7vid
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2 Answers2

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I would strongly recommend using a virtual machine to test installation and upgrades of software. If you have pro or enterprise versions of windows you already have access to HyperV. This has several advantages:

  • You have a known environment, either a clean windows install, or in combination with the software of your choice.
  • You can easily revert the VM to a previous known state.
  • You can keep multiple VMs or snapshots of different versions.
  • You can test different operating systems in a easy way.
  • You can limit memory and processor capacity without affecting your main workstation.
  • You can install network limiting tools without affecting your main workstation.

You can, and should, still run and test development builds of the software on your own workstation since this simplify debugging. While VMs are more appropriate when doing "release" tests.

JonasH
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I found the solution for having 2 or more different versions of the same software installed at the same time and updating them automatically.

First I find the version I am currently using with 

var version = Assembly.GetExecutingAssembly().GetName().Version;

I then compare that to the version of .msi file which is in a update folder on server (there are production and development folders). If the .msi version is higher than installed version, the upgrade begins.

First I install the new software in the same folder using

startInfo.Arguments = string.Format("/passive /norestart /i \"{0}\"  TARGETDIR=\"{1}\"", path, installDirectory);
var process = System.Diagnostics.Process.Start(startInfo);
process.WaitForExit();

Then I uninstall only the version I opened. I find the product code of that specific version using below code (I found the code in Windows GUID or Application List answer and modified it a bit)

 private string GetProductCode(string programName, string version)
        {
            StringBuilder sbProductCode = new StringBuilder(39);
            int iIdx = 0;
            while (
                0 == MsiEnumProducts(iIdx++, sbProductCode))
            {
                Int32 productNameLen = 512;
                StringBuilder sbProductName = new StringBuilder(productNameLen);

                MsiGetProductInfo(sbProductCode.ToString(),
                    "ProductName", sbProductName, ref productNameLen);

                if (sbProductName.ToString().Contains(programName))
                {
                    Int32 installDirLen = 1024;
                    StringBuilder sbVersionString = new StringBuilder(installDirLen);

                    MsiGetProductInfo(sbProductCode.ToString(),
                        "VersionString", sbVersionString, ref installDirLen);

                    if (version.Contains(sbVersionString.ToString()))
                    {
                        return sbProductCode.ToString();
                    }
                }
            }

            return null;
        }

and run 

startInfo.Arguments = string.Format("/passive /norestart /x \"{0}\"", productCode);
System.Diagnostics.Process.Start(startInfo);

At the end there are still 2 installed version of the softare and only one was updated.

d7vid
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