Why I am getting blank value for SourceDir in a managed Custom Action in WIX?

问题

Here is the code for the Product.wxs I am using:

<Product Id="*" Name="abc" Language="1033" Version="1.0.0.0" Manufacturer="def" UpgradeCode="2b75c560-783e-4688-9a02-da09bf986597">
    <Package InstallerVersion="200" Compressed="yes" InstallScope="perMachine" />

    <MajorUpgrade DowngradeErrorMessage="A newer version of [ProductName] is already installed." />
    <MediaTemplate />

    <Binary Id="myCustomActionsDLL" SourceFile="..\SetupConfiguration\bin\debug\SetupConfiguration.CA.dll" />
    <CustomAction Id="SetProperty" Execute="immediate"
                        Property="CA_myCustomAction"
                        Value="InstallDir=[MergeRedirectFolder];SourceDir=[SourceDir]" />
    <CustomAction Id="CA_myCustomAction"
        BinaryKey="myCustomActionsDLL"
        DllEntry="SetABCConfiguration"
        Execute="deferred" Impersonate="no"
        Return="check" />

    <InstallExecuteSequence>
      <Custom Action="SetProperty" After="InstallInitialize">Not Installed</Custom>
      <Custom Action="CA_myCustomAction" Before="InstallFinalize">Not Installed</Custom>
    </InstallExecuteSequence>

    <Feature Id="ProductFeature" Title="abc" Level="1">
      <ComponentGroupRef Id="ABCGroup" />
    </Feature>
  </Product>

  <Fragment>
    <Directory Id="TARGETDIR" Name="SourceDir">
      <Directory Id="ProgramFilesFolder">
        <Directory Id="def" Name="def">
          <Directory Id="dirFC83E07AC2C77525961486C88A01C277" Name="ABC">
            <Directory Id="MergeRedirectFolder"/>
          </Directory>
          </Directory>
      </Directory>
    </Directory>
  </Fragment>

[CustomAction]
public static ActionResult SetABCConfiguration(Session session)
{
    string strSourceFolder = session.CustomActionData["SourceDir"]; // returning blank value
    string strWebGeniePhyPath = session.CustomActionData["InstallDir"]; // returning correct value
}

I have deliberately left out the code for component ABCGroup, it just contains a heat harvested directory, which is a long list.

Please help.

回答1:

The SourceDir property is set by the ResolveSource Action. WiX doesn't author the ResolveSource action by default, you have to add it to your sequence using the ResolveSource Element.

回答2:

I have found the solution myself by just trying things:

Just change the following line:

  <Custom Action="SetProperty" After="InstallInitialize">Not Installed</Custom>

to this line:

  <Custom Action="SetProperty" After="CreateFolders">Not Installed</Custom>

and it works.

I don't know why this change works, because the code in question was working when it was in a merge module rather than in the main Product.wxs file.

来源：https://stackoverflow.com/questions/23773840/why-i-am-getting-blank-value-for-sourcedir-in-a-managed-custom-action-in-wix

标签

.net

wix

windows-installer

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