ConfigViewModel Class

Bootstrapper.ViewModels.ConfigViewModel

This VM demonstrates how you could expose a bundle variable through a property. If we want to assign a value to the package's SAMPLE property, we can define a bundle variable in Bundle.wxs.

<Variable Name="SampleOption" Type="string" Value="" />

In the Chain, we can assign the value of SampleOption to SAMPLE. We declare this as a child of MsiPackage.

<Chain>
  <MsiPackage  ...  >
    <MsiProperty Name='SAMPLE' Value='[SampleOption]'/>
  </MsiPackage>
</Chain>

Finally, in ConfigVm, we can expose SampleOption through a property.

public string SampleOption
{
    get
    {
        if (_model.Engine.ContainsVariable("SampleOption"))
            return _model.Engine.GetVariableString("SampleOption");

        return string.Empty;
    }
    set
    {
        _model.Engine.SetVariableString("SampleOption", value, false);
        OnPropertyChanged();
    }
}

Looking at the package's log after the install has run, you can find the value that was supplied by the bundle.

MSI (s) (D4:74) [10:57:30:856]: PROPERTY CHANGE: Adding SAMPLE property. Its value is 'abc'.

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