1014603-ug: Added feature UG documentation for Support for Page‑Level Actions (OnOpen and OnClose) in PDF Documents

Author: sameerkhan001

Document-Processing/PDF/PDF-Library/NET/Working-with-Pages.md

@@ -1590,3 +1590,123 @@ loadedDocument.Close(True)
 {% endtabs %}
 
 You can download a complete working sample from [GitHub](https://github.com/SyncfusionExamples/PDF-Examples/tree/master/Pages/Insert-New-Page-in-Existing-PDF-with-Same-Size/.NET).
+
+## Support for Page‑Level Actions in PDF
+
+Added full support for page‑level actions in the .NET PDF library, enabling developers to add, retrieve, edit, and remove actions triggered by PDF page events such as `OnOpen` and `OnClose`.
+
+Refer to the following code example to define custom behavior for PDF page‑level actions.
+
+{% tabs %}  
+
+{% highlight c# tabtitle="C# [Cross-platform]" %}
+
+using Syncfusion.Pdf;
+using Syncfusion.Pdf.Interactive;
+
+// Create a new PDF document.
+using (PdfDocument document = new PdfDocument())
+{
+    // Add a page to the document.
+    PdfPage page1 = document.Pages.Add();
+    document.Actions.AfterOpen = 
+    // Create and add new JavaScript action to execute when the first page opens
+    Page1.Actions.OnOpen = new PdfJavaScriptAction("app.alert(\"Welcome! This page has just been opened.\");");
+    // Create and add new URI action to execute when the first page closes
+    Page1.Actions.OnClose = new PdfUriAction("http://www.google.com");
+    // Add second page to the document.
+    PdfPage page2 = document.Pages.Add();
+    // Create a sound action 
+    PdfSoundAction soundAction = new PdfSoundAction("Startup.wav");
+    soundAction.Sound.Bits = 16;
+    soundAction.Sound.Channels = PdfSoundChannels.Stereo;
+    soundAction.Sound.Encoding = PdfSoundEncoding.Signed;
+    soundAction.Volume = 0.9f;
+    // Set the sound action to execute when the second page opens
+    Page2.Actions.OnOpen = soundAction;
+    // Create and add new Launch action to execute when the second page closes
+    Page2.Actions.OnClose = new PdfLaunchAction("logo.png");
+    // Removing the close action on first page
+    Page1.Actions.OnClose = null;
+    // Removing both open and close actions on second page
+    Page2.Actions.Clear(true);
+    //Save the document
+    document.Save("Output.pdf");
+}
+
+{% endhighlight %}
+
+{% highlight c# tabtitle="C# [Windows-specific]" %}
+
+using Syncfusion.Pdf;
+using Syncfusion.Pdf.Interactive;
+
+// Create a new PDF document.
+using (PdfDocument document = new PdfDocument())
+{
+    // Add a page to the document.
+    PdfPage page1 = document.Pages.Add();
+    document.Actions.AfterOpen = 
+    // Create and add new JavaScript action to execute when the first page opens
+    Page1.Actions.OnOpen = new PdfJavaScriptAction("app.alert(\"Welcome! This page has just been opened.\");");
+    // Create and add new URI action to execute when the first page closes
+    Page1.Actions.OnClose = new PdfUriAction("http://www.google.com");
+    // Add second page to the document.
+    PdfPage page2 = document.Pages.Add();
+    // Create a sound action 
+    PdfSoundAction soundAction = new PdfSoundAction("Startup.wav");
+    soundAction.Sound.Bits = 16;
+    soundAction.Sound.Channels = PdfSoundChannels.Stereo;
+    soundAction.Sound.Encoding = PdfSoundEncoding.Signed;
+    soundAction.Volume = 0.9f;
+    // Set the sound action to execute when the second page opens
+    Page2.Actions.OnOpen = soundAction;
+    // Create and add new Launch action to execute when the second page closes
+    Page2.Actions.OnClose = new PdfLaunchAction("logo.png");
+    // Removing the close action on first page
+    Page1.Actions.OnClose = null;
+    // Removing both open and close actions on second page
+    Page2.Actions.Clear(true);
+    //Save the document
+    document.Save("Output.pdf");
+}
+
+{% endhighlight %}
+
+{% highlight vb.net tabtitle="VB.NET [Windows-specific]" %}
+
+
+Imports Syncfusion.Pdf
+Imports Syncfusion.Pdf.Interactive
+
+' Create a new PDF document.
+Using document As New PdfDocument()
+    ' Add a page to the document.
+    Dim page1 As PdfPage = document.Pages.Add()
+    ' Create and add new JavaScript action to execute when the first page opens
+    page1.Actions.OnOpen = New PdfJavaScriptAction("app.alert(""Welcome! This page has just been opened."");")
+    ' Create and add new URI action to execute when the first page closes
+    page1.Actions.OnClose = New PdfUriAction("http://www.google.com")
+    ' Add second page to the document.
+    Dim page2 As PdfPage = document.Pages.Add()
+    ' Create a sound action 
+    Dim soundAction As New PdfSoundAction("Startup.wav")
+    soundAction.Sound.Bits = 16
+    soundAction.Sound.Channels = PdfSoundChannels.Stereo
+    soundAction.Sound.Encoding = PdfSoundEncoding.Signed
+    soundAction.Volume = 0.9F
+    ' Set the sound action to execute when the second page opens
+    page2.Actions.OnOpen = soundAction
+    ' Create and add new Launch action to execute when the second page closes
+    page2.Actions.OnClose = New PdfLaunchAction("logo.png")
+    ' Removing the close action on first page
+    page1.Actions.OnClose = Nothing
+    ' Removing both open and close actions on second page
+    page2.Actions.Clear(True)
+    ' Save the document
+    document.Save("Output.pdf")
+End Using
+
+{% endhighlight %}
+
+{% endtabs %}