WiX - how do I refresh Edit control after file browse dialog - wix

Question

I am required to have a FileBrowseDialog during a WiX installation. I made my own custom dialog that raises the OpenFileDialog and sets the selected value in the session property (found the code here). I need a way to refresh the Edit control with the selected full path. Right now, after choosing the file, the edit control remains blank. How do I achieve this? I am not an expert in MSI or WiX.
Wix Code:
<UI>
<Dialog Id="DrugsDBFileBrowseDialog" Width="370" Height="270" Title="!(loc.DrugsDBFileDlg_Title)">
<Control Id="BannerBitmap" Type="Bitmap" X="0" Y="0" Width="370" Height="44" TabSkip="no" Text="!(loc.SetupTypeDlgBannerBitmap)" />
<Control Id="BannerLine" Type="Line" X="0" Y="44" Width="370" Height="0" />
<Control Id="Description" Type="Text" X="25" Y="23" Width="280" Height="15" Transparent="yes" NoPrefix="yes" Text="!(loc.DrugsDBFileDlgDescription)" />
<Control Id="Title" Type="Text" X="15" Y="6" Width="200" Height="15" Transparent="yes" NoPrefix="yes" Text="!(loc.DrugsDBFileDlgTitle)" />
<Control Type="Edit" Id="txtDrugsFilePath" Width="270" Height="15" X="22" Y="142" Property="DRUGSDBFILEPATH" Text="[DRUGSDBFILEPATH]" />
<Control Type="PushButton" Id="btnBrowse" Width="56" Height="21" X="300" Y="139" Text="&Browse" >
<Publish Event="DoAction" Value="BrowseDBFile" Order="0">1</Publish>
<Publish Event="SpawnDialog" Value="ValidationErrorDlg" Order="1000">ValidationErrorText</Publish>
</Control>
<Control Type="Text" Id="lblInstructions" Width="290" Height="15" X="26" Y="120" Text="!(loc.DrugsDBFileDlgLabelDescription)" />
<Control Id="BottomLine" Type="Line" X="0" Y="234" Width="370" Height="0" />
<Control Id="Back" Type="PushButton" X="180" Y="243" Width="56" Height="17" Text="!(loc.WixUIBack)" />
<Control Id="Next" Type="PushButton" X="236" Y="243" Width="56" Height="17" Text="!(loc.WixUINext)" />
<Control Id="Cancel" Type="PushButton" X="304" Y="243" Width="56" Height="17" Cancel="yes" Text="!(loc.WixUICancel)">
<Publish Event="SpawnDialog" Value="CancelDlg">1</Publish>
</Control>
</Dialog>
</UI>
Custom Action Code:
[CustomAction]
public static ActionResult BrowseDBFile(Session session)
{
try {
session.Log("Begin OpenFileChooser Custom Action");
var task = new Thread(() => GetFile(session));
task.SetApartmentState(ApartmentState.STA);
task.Start();
task.Join();
session.Log("End OpenFileChooser Custom Action");
} catch (Exception ex) {
session.Log("Exception occurred as Message: {0}\r\n StackTrace: {1}", ex.Message, ex.StackTrace);
return ActionResult.Failure;
}
return ActionResult.Success;
}
private static void GetFile(Session session)
{
OpenFileDialog fileDialog = new OpenFileDialog();
if (fileDialog.ShowDialog() == DialogResult.OK) {
session["DRUGSDBFILEPATH"] = fileDialog.FileName;
}
}
UPDATE
Found out the solution is to invoke the RESET event before performing the action associated to the BROWSE button. I also performed a PUBLISH PROPERTY after performing the custom action. Look below.
<UI>
<Dialog Id="DrugsDBFileBrowseDialog" Width="370" Height="270" Title="!(loc.DrugsDBFileDlg_Title)">
<Control Id="BannerBitmap" Type="Bitmap" X="0" Y="0" Width="370" Height="44" TabSkip="no" Text="!(loc.SetupTypeDlgBannerBitmap)" />
<Control Id="BannerLine" Type="Line" X="0" Y="44" Width="370" Height="0" />
<Control Id="Description" Type="Text" X="25" Y="23" Width="280" Height="15" Transparent="yes" NoPrefix="yes" Text="!(loc.DrugsDBFileDlgDescription)" />
<Control Id="Title" Type="Text" X="15" Y="6" Width="200" Height="15" Transparent="yes" NoPrefix="yes" Text="!(loc.DrugsDBFileDlgTitle)" />
<Control Type="Edit" Id="txtDrugsFilePath" Width="270" Height="15" X="22" Y="142" Property="DRUGSDBFILEPATH" Text="[DRUGSDBFILEPATH]" />
<Control Type="PushButton" Id="btnBrowse" Width="56" Height="21" X="300" Y="139" Text="&Browse" >
<Publish Event="Reset" Value="1">1</Publish>
<Publish Event="DoAction" Value="BrowseDBFile" Order="1"><![CDATA[1]]></Publish>
<Publish Property="DRUGSDBFILEPATH" Value="[DRUGSDBFILEPATH]"><![CDATA[1]]></Publish>
</Control>
<Control Type="Text" Id="lblInstructions" Width="290" Height="15" X="26" Y="120" Text="!(loc.DrugsDBFileDlgLabelDescription)" />
<Control Id="BottomLine" Type="Line" X="0" Y="234" Width="370" Height="0" />
<Control Id="Back" Type="PushButton" X="180" Y="243" Width="56" Height="17" Text="!(loc.WixUIBack)" />
<Control Id="Next" Type="PushButton" X="236" Y="243" Width="56" Height="17" Text="!(loc.WixUINext)" >
<Publish Event="DoAction" Value="ValidateSelectedPath" Order="1">1</Publish>
<Publish Event="SpawnDialog" Value="ValidationErrorDlg" Order="1000">ValidationErrorText</Publish>
</Control>
<Control Id="Cancel" Type="PushButton" X="304" Y="243" Width="56" Height="17" Cancel="yes" Text="!(loc.WixUICancel)">
<Publish Event="SpawnDialog" Value="CancelDlg">1</Publish>
</Control>
</Dialog>
</UI>

Answer 1

<Control Type="Edit" Id="txtDrugsFilePath" Width="270" Height="15" X="22" Y="142" Property="DRUGSDBFILEPATH" Text="[DRUGSDBFILEPATH]" />
<Control Type="PushButton" Id="btnBrowse" Width="56" Height="21" X="300" Y="139" Text="&Browse" >
<Publish Event="Reset" Value="1">1</Publish>
<Publish Event="DoAction" Value="BrowseDBFile" Order="1"><![CDATA[1]]></Publish>
<Publish Property="DRUGSDBFILEPATH" Value="[DRUGSDBFILEPATH]"><![CDATA[1]]></Publish>
</Control>
<Control Type="Text" Id="lblInstructions" Width="290" Height="15" X="26" Y="120" Text="!(loc.DrugsDBFileDlgLabelDescription)" />
<Control Id="BottomLine" Type="Line" X="0" Y="234" Width="370" Height="0" />
<Control Id="Back" Type="PushButton" X="180" Y="243" Width="56" Height="17" Text="!(loc.WixUIBack)" />
<Control Id="Next" Type="PushButton" X="236" Y="243" Width="56" Height="17" Text="!(loc.WixUINext)" >
<Publish Event="DoAction" Value="ValidateSelectedPath" Order="1">1</Publish>
<Publish Event="SpawnDialog" Value="ValidationErrorDlg" Order="1000">ValidationErrorText</Publish>
</Control>
<Control Id="Cancel" Type="PushButton" X="304" Y="243" Width="56" Height="17" Cancel="yes" Text="!(loc.WixUICancel)">
<Publish Event="SpawnDialog" Value="CancelDlg">1</Publish>
</Control>
</Dialog>
</UI>

Answer 2

I did the same with the label
<Control
Type="PushButton"
Id="Browse"
Width="56"
Height="17"
X="281"
Y="125"
Text="Browser"
Property="FILE_PATH" >
<Publish Event="DoAction" Value="CA_TO_OPEN_FILE_BROWSER_DIALOG" Order="1">1</Publish>
<Publish Property="FILE_PATH" Value="[FILE_PATH]">1</Publish>
</Control>
<Control
Type="Text"
Id="LocationLabel"
Width="244"
Height="15"
X="26" Y="126"
Property="FILE_PATH"
Text="[FILE_PATH]"
Sunken="yes"
Indirect="yes"
Disabled="yes">
</Control>