Syncfusion WPF PDFViewer – UI Sample Generator

Generate C# Code for the User's Project (default)

Trigger keywords: "how to", "code sample", "show me", "example", "snippet", "integrate", "wpf PdfViewer", "create sample".

Purpose: Generate clean, ready-to-use C# and XAML code snippets that users can directly insert into their WPF applications when working with the Syncfusion WPF PdfViewer control.

Workflow:

1. Build the C# code using snippets provided in the references/*.md files.

2. Before generating the sample, ask the user whether the code should be inserted into an existing XAML file in their WPF project or created as a new WPF project application.

3. If the user chooses to create a new WPF project, ask them which target framework they want to use:

   • .NET Framework (e.g. 4.6, 4.7, 4.8) — uses Syncfusion.PdfViewer.WPF and targets classic .NET Framework.
   • .NET Core / .NET (e.g., .NET 8, .NET 10) — uses Syncfusion.PdfViewer.WPF with <TargetFramework>net8.0-windows</TargetFramework> (or the selected version).
   • Based on the user's choice, generate the .csproj file with the correct <TargetFramework> value, and tailor any framework-specific code (e.g., namespace imports, NuGet package versions, startup code) accordingly.

4. XAML generation rules — MANDATORY: analyze the reference files BEFORE writing any XAML:

   ⚠️ STRICT RULE — NO EXCEPTIONS: Open and read the relevant references/*.md file(s) for the requested feature before producing any XAML. Ask yourself: "Does the reference file contain any XAML markup for this feature?"

   • YES → XAML exists in reference → include only those exact XAML elements shown in the snippet.
   • NO → reference is C# only → MainWindow.xaml MUST contain only <syncfusion:PdfViewerControl> inside a <Grid>. Stop. Do not add anything else.

   Checklist to run before every XAML output:

   • I have opened the relevant references/*.md file.
   • I have confirmed whether it contains XAML or is C#-only.
   • If C#-only: my XAML contains nothing beyond <syncfusion:PdfViewerControl x:Name="pdfViewer"/> inside <Grid>.
   • If XAML exists in reference: I am copying only those elements — not inventing new ones.

   Forbidden (when reference has no XAML): <Button>, <ComboBox>, <Slider>, <StackPanel>, <TextBlock>, <Grid.RowDefinitions>, or any UI element that does not appear verbatim in the reference snippet.

   Known C#-only features (no XAML must be generated):

   • Ink / shape / stamp / text / highlight annotations (annotation.md) — all settings are C# only.
   • Magnifying / zoom level (magnifying.md) — C# only.
   • Interaction mode (interaction-mode.md) — C# only.
   • Text selection (text-selection.md) — C# only.
   • PDF layers (pdf-layers.md) — C# only.
   • Redaction (redaction.md) — C# only.
   • Print (print.md) — C# only.
   • Export image (export-image.md) — C# only.
   • Saving PDF (saving-pdf-files.md) — C# only.

   Known features that DO require XAML (sourced from references):

   • Commands (commands.md): navigation/zoom/annotation/undo/redo/print/unload buttons use Command="{Binding ElementName=..., Path=...}".
   • Toolbar items (toolbar-items.md): classic style requires Style="{StaticResource SyncfusionPdfViewerCustomControlStyle}" on <syncfusion:PdfViewerControl>.

   All XAML additions must be placed inside the same <Grid> that hosts <syncfusion:PdfViewerControl>, using a <StackPanel> or <Grid> sub-layout only when the reference snippet implies it.

5. Add only the APIs required to satisfy the user's requested functionality. Do not include optional APIs, additional.

6. C# language version compatibility: When the target framework is .NET Framework (e.g., 4.6, 4.7, 4.8), the default C# language version is 7.3. The generated C# code MUST NOT use any C# 8.0+ language features. Specifically, do NOT use:

   • Switch expressions (x switch { ... })
   • Nullable reference types (string?, #nullable enable, object?)
   • Default interface implementations
   • Ranges and indices (^1, 1..^1)
   • ??= null-coalescing assignment Use if/else or traditional switch statements instead of switch expressions. Use regular null checks (if (x != null)) instead of nullable reference type syntax.

---

Code References

All templates and operation snippets live in references/*.md. Each file is a focused snippet or template the agent will combine when generating samples.

---

Prerequisites

1. Development Environment: Visual Studio 2022 or Visual Studio Insider 2026 (recommended for .NET 10).
2. NET Framework 4.5+ or .NET Core/.NET 8+ with WPF support.
3. Syncfusion WPF NuGet Packages: Syncfusion.PdfViewer.WPF

Theme NuGet Packages

To apply a built-in theme to the WPF PdfViewerControl using SfSkinManager, install the NuGet package that matches the desired theme:

Note: Install only the NuGet package corresponding to the theme the user wants to apply. Theme support requires Syncfusion.SfSkinManager.WPF, which is included as a dependency of the theme packages.

Refer to: Apply theme using SfSkinManager | WPF PdfViewer Theme

Documentations

WPF PdfViewer overview