Wix Bootstrapper: Exit/End during installation.

 

During CacheAcquireProgress Event:

this.model.BootstrapperApplication.CacheAcquireProgress += (sender, args) =>
{
    //if ever detected InstallState.Cancelled (which can be set from other event like Exit Button Click)
    if (this.State == InstallState.Cancelled)
        args.Result = Result.Cancel; //this would quit installation process.
.

.

.

};

During ExecuteProgress Event:

this.model.BootstrapperApplication.ExecuteProgress += (sender, args) =>
{
    //if ever detected InstallState.Cancelled (which can be set from other event like Exit Button Click)
    if (this.State == InstallState.Cancelled)
        args.Result = Result.Cancel; //this would quit installation process.

.

.

.

};

So if InstallState.Cancelled is ever setup, it would set args.Result=Result.Cancel and so it would quit installation.