DetectCondition, Error 0x8007000d: Failed to parse condition

[NTSpaul]

Hello all,

I'm using ExePackage in my Bundle to install an application, and I want to check whether the driver already has been installed using the DetectCondition parameter:

new ExePackage(@"SomeDriver.exe")
{
Name = "SomeDriver 1.4",
Vital = true,
UninstallArguments = "/uninstall /quiet /norestart",
DetectCondition = "FileExists(C:\Program Files (x86)\SomeDriver\SomeDriver.exe)"
}

However, I receive the parse condition error:

[1994:195C][2025-01-06T21:09:20]e000: Error 0x8007000d: Failed to parse condition 'FileExists(C:\Program Files (x86)\SomeDriver\SomeDriver.exe)' at position: 10
[1994:195C][2025-01-06T21:09:20]e000: Error 0x8007000d: Failed to expect end symbol.
[1994:195C][2025-01-06T21:09:20]e051: Error 0x8007000d. Failed to parse condition FileExists(C:\Program Files (x86)\SomeDriver\SomeDriver.exe).
[1994:195C][2025-01-06T21:09:20]e000: Error 0x8007000d: Failed to evaluate EXE package detect condition.

It looks like FileExists is not supported (yet)? If not, is there another way?

[oleg-shilo]

I am not sure that the syntax you use is a valid WiX syntax. It seems to me that it has to be a simple boolean expression based on bundle variables. https://support.firegiant.com/hc/en-us/articles/230912167-How-the-DetectCondition-attribute-on-ExePackage-element-is-used

Unfortunately, you cannot use any custom behaviour to evaluate the DetectCondition like in MSI. WiX teams did not offer any Bundle hook (API) for that. So you have to rely on their own tools - extensions. Thus you can use ProductSearch extension. You can see how to use it in this sample:

[NTSpaul]

Thank you for your reply. Based on the given example, I eventually used to following:

bootstrapper.Include(WixExtension.Util);
bootstrapper.AddWixFragment("Wix/Bundle",
new UtilFileSearch()
{
Path = @"[ProgramFilesFolder]SomeDriver\SomeDriver.exe",
Result = SearchResult.exists,
Variable = "DriverInstalled"
});

where the DriverInstalled is used in the DetectCondition.