agentic-net-examples / working-with-protection

---
category: working-with-protection
display_name: Working With Protection
language: csharp
framework: net8.0
package: Aspose.Diagram
version: 26.9.0
examples: 35
pass_rate: 100.0
generated: 2026-09-24
parent: https://github.com/aspose-diagram/agentic-net-examples/blob/main/agents.md
---

# Working With Protection

> AI-generated, compiler-validated C# examples for the [Aspose.Diagram for .NET](https://products.aspose.com/diagram/net/) API — **Working With Protection** category.

## Statistics

| Metric | Value |
|--------|-------|
| Examples | 35 |
| Pass Rate | 100.0% |
| Aspose.Diagram Version | 26.9.0 |
| Target Framework | net8.0 |
| Last Updated | 2026-09-24 |

## Persona

You are a C# developer specializing in Visio diagram processing using Aspose.Diagram for .NET. You are working in the **Working With Protection** category.
Your task is to write clean, compilable C# console examples that demonstrate Aspose.Diagram API usage for working with protection operations.
You always use explicit types (never `var`), include all required `using` directives, and follow the patterns established in this category.

## Boundaries

### Always

- Use explicit types — `Diagram diagram = new Diagram(...)` not `var diagram = ...`
- Include `using Aspose.Diagram;` and `using Aspose.Diagram.Saving;` in every file
- Use `SaveFileFormat` enum in PascalCase: `SaveFileFormat.Vsdx`, `SaveFileFormat.Pdf`
- Use `BOOL.True` / `BOOL.False` for Aspose BOOL properties — never plain `true`/`false`
- Wrap entry point in `static void Main()` inside `class Program`
- Handle `FileNotFoundException` with try/catch when loading files

### Ask First

- Multi-file projects or solutions
- External dependencies beyond Aspose.Diagram and Aspose.Drawing
- Platform-specific code (Windows Forms, WPF, ASP.NET)

### Never

- Use `var` for any variable declaration
- Use `using (Diagram diagram = ...)` — Diagram does not implement IDisposable
- Use `SaveFileFormat.VSDX` or other ALL_CAPS enum values
- Use `System.Windows.Forms` — not available in net8.0 console project
- Use NUnit `Assert` — not available, use `Console.WriteLine` and manual checks
- Use PowerShell syntax inside C# files

## Required Namespaces

| Namespace | Files | Purpose |
|-----------|-------|---------|
| `Aspose.Diagram` | 35 | Core diagram API |
| `System` | 35 | Console, Math, DateTime, Exception |
| `System.IO` | 31 | File, Stream, Path, Directory operations |
| `Aspose.Diagram.Saving` | 14 | Save options (PDF, PNG, HTML, SVG, XPS) |
| `System.Collections.Generic` | 3 | List, Dictionary, HashSet |
| `System.Text.Json` | 1 | JSON serialization |

## Common Code Pattern

The dominant workflow in this category is: **Load → Modify → Save**

```csharp
using System;
using Aspose.Diagram;
using Aspose.Diagram.Saving;

class Program
{
    static void Main()
    {
        // 1. Load or create diagram
        Diagram diagram = new Diagram("input.vsdx");

        // 2. Perform category-specific operations
        // ...

        // 3. Save result
        diagram.Save("output.vsdx", SaveFileFormat.Vsdx);
    }
}
```

## Examples

| File | Key APIs | Task |
|------|----------|------|
| [after-clearing-protection-validate-that-no-shape-attributes-remain-locked.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/after-clearing-protection-validate-that-no-shape-attributes-remain-locked.cs) | `Diagram`, `Pages`, `Save` | After clearing protection validate that no shape attributes remain locked |
| [apply-diagram-level-protection-to-block-modification-of-page-orientation.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/apply-diagram-level-protection-to-block-modification-of-page-orientation.cs) | `Diagram`, `Pages`, `Save` | Apply diagram level protection to block modification of page orientation |
| [apply-diagram-level-protection-to-disable-changing-the-document-theme.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/apply-diagram-level-protection-to-disable-changing-the-document-theme.cs) | `Diagram`, `Save`, `diagram` | Apply diagram level protection to disable changing the document theme |
| [apply-diagram-level-protection-to-prevent-adding-new-pages.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/apply-diagram-level-protection-to-prevent-adding-new-pages.cs) | `Diagram`, `Save`, `diagram` | Apply diagram level protection to prevent adding new pages |
| [apply-shape-protection-only-to-shapes-of-type-connector.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/apply-shape-protection-only-to-shapes-of-type-connector.cs) | `Diagram`, `Pages`, `Save` | Apply shape protection only to shapes of type connector |
| [apply-shape-protection-only-to-shapes-whose-custom-property-category-equals-critical.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/apply-shape-protection-only-to-shapes-whose-custom-property-category-equals-critical.cs) | `Diagram`, `Pages`, `Save` | Apply shape protection only to shapes whose custom property category equals critical |
| [apply-shape-protection-to-all-shapes-on-a-specific-layer.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/apply-shape-protection-to-all-shapes-on-a-specific-layer.cs) | `Diagram`, `Pages`, `Save` | Apply shape protection to all shapes on a specific layer |
| [apply-shape-protection-to-shapes-that-belong-to-the-readonly-layer.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/apply-shape-protection-to-shapes-that-belong-to-the-readonly-layer.cs) | `Diagram`, `Pages`, `Save` | Apply shape protection to shapes that belong to the readonly layer |
| [apply-shape-protection-to-shapes-whose-area-exceeds-a-predefined-threshold.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/apply-shape-protection-to-shapes-whose-area-exceeds-a-predefined-threshold.cs) | `Diagram`, `Pages`, `Save` | Apply shape protection to shapes whose area exceeds a predefined threshold |
| [apply-shape-protection-to-shapes-whose-name-contains-banner.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/apply-shape-protection-to-shapes-whose-name-contains-banner.cs) | `Diagram`, `Pages`, `Save` | Apply shape protection to shapes whose name contains banner |
| [apply-shape-protection-to-shapes-with-custom-property-fixedangle-set-to-true.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/apply-shape-protection-to-shapes-with-custom-property-fixedangle-set-to-true.cs) | `Diagram`, `Pages`, `Save` | Apply shape protection to shapes with custom property fixedangle set to true |
| [clear-all-protection-settings-from-the-diagram.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/clear-all-protection-settings-from-the-diagram.cs) | `Diagram`, `Pages`, `Save` | Clear all protection settings from the diagram |
| [clone-protection-settings-from-one-shape-to-another-within-the-same-diagram.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/clone-protection-settings-from-one-shape-to-another-within-the-same-diagram.cs) | `Diagram`, `Pages`, `Save` | Clone protection settings from one shape to another within the same diagram |
| [compare-protection-settings-between-two-diagrams-to-detect-inconsistencies.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/compare-protection-settings-between-two-diagrams-to-detect-inconsistencies.cs) | `Diagram`, `Shapes`, `page` | Compare protection settings between two diagrams to detect inconsistencies |
| [enable-shape-protection-for-all-shapes-locking-width-height-x-position-y-position-and-rotation.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/enable-shape-protection-for-all-shapes-locking-width-height-x-position-y-position-and-rotation.cs) | `Diagram`, `Pages`, `Save` | Enable shape protection for all shapes locking width height x position y position and rotation |
| [export-the-protected-diagram-to-pdf-and-verify-protection-metadata-persists.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/export-the-protected-diagram-to-pdf-and-verify-protection-metadata-persists.cs) | `Diagram`, `PdfSaveOptions`, `Save` | Export the protected diagram to pdf and verify protection metadata persists |
| [export-the-protected-diagram-to-vdx-and-verify-style-locks-are-retained.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/export-the-protected-diagram-to-vdx-and-verify-style-locks-are-retained.cs) | `Diagram`, `Shapes`, `page` | Export the protected diagram to vdx and verify style locks are retained |
| [generate-a-json-summary-counting-locked-widths-heights-and-rotations-across-the-diagram.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/generate-a-json-summary-counting-locked-widths-heights-and-rotations-across-the-diagram.cs) | `Diagram`, `Pages`, `Shapes` | Generate a json summary counting locked widths heights and rotations across the diagram |
| [implement-error-handling-that-logs-attempts-to-modify-locked-diagram-elements.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/implement-error-handling-that-logs-attempts-to-modify-locked-diagram-elements.cs) | `Diagram`, `Pages`, `Save` | Implement error handling that logs attempts to modify locked diagram elements |
| [load-a-visio-diagram-into-memory-and-verify-successful-parsing.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/load-a-visio-diagram-into-memory-and-verify-successful-parsing.cs) | `Diagram`, `Pages`, `diagram` | Load a visio diagram into memory and verify successful parsing |
| [lock-the-height-attribute-of-a-specific-shape-identified-by-its-id.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/lock-the-height-attribute-of-a-specific-shape-identified-by-its-id.cs) | `Diagram`, `Pages`, `Save` | Lock the height attribute of a specific shape identified by its id |
| [lock-the-rotation-attribute-of-a-specific-shape-identified-by-its-id.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/lock-the-rotation-attribute-of-a-specific-shape-identified-by-its-id.cs) | `Diagram`, `Pages`, `Save` | Lock the rotation attribute of a specific shape identified by its id |
| [lock-the-width-attribute-of-a-specific-shape-identified-by-its-id.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/lock-the-width-attribute-of-a-specific-shape-identified-by-its-id.cs) | `Diagram`, `Pages`, `Save` | Lock the width attribute of a specific shape identified by its id |
| [lock-the-x-position-attribute-of-a-specific-shape-identified-by-its-id.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/lock-the-x-position-attribute-of-a-specific-shape-identified-by-its-id.cs) | `Diagram`, `Pages`, `Save` | Lock the x position attribute of a specific shape identified by its id |
| [lock-the-y-position-attribute-of-a-specific-shape-identified-by-its-id.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/lock-the-y-position-attribute-of-a-specific-shape-identified-by-its-id.cs) | `Diagram`, `Pages`, `Save` | Lock the y position attribute of a specific shape identified by its id |
| [log-every-protection-change-with-timestamp-and-affected-element-identifier.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/log-every-protection-change-with-timestamp-and-affected-element-identifier.cs) | `AddShape`, `Diagram`, `Pages` | Log every protection change with timestamp and affected element identifier |
| [remove-protection-from-a-specific-shape.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/remove-protection-from-a-specific-shape.cs) | `Diagram`, `Pages`, `Save` | Remove protection from a specific shape |
| [retrieve-current-protection-status-of-the-diagram-and-log-locked-elements.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/retrieve-current-protection-status-of-the-diagram-and-log-locked-elements.cs) | `Diagram`, `Pages`, `Save` | Retrieve current protection status of the diagram and log locked elements |
| [save-the-protected-diagram-to-a-new-file-preserving-original-metadata.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/save-the-protected-diagram-to-a-new-file-preserving-original-metadata.cs) | `Diagram`, `Save`, `diagram` | Save the protected diagram to a new file preserving original metadata |
| [set-background-protection-to-prevent-editing-or-deletion-of-background-pages.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/set-background-protection-to-prevent-editing-or-deletion-of-background-pages.cs) | `Diagram`, `Page`, `Pages` | Set background protection to prevent editing or deletion of background pages |
| [set-master-stencil-protection-to-disallow-adding-new-shapes-from-those-masters.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/set-master-stencil-protection-to-disallow-adding-new-shapes-from-those-masters.cs) | `Diagram`, `Save`, `diagram` | Set master stencil protection to disallow adding new shapes from those masters |
| [set-style-protection-to-lock-diagram-styles-from-modification.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/set-style-protection-to-lock-diagram-styles-from-modification.cs) | `Diagram`, `Save`, `diagram` | Set style protection to lock diagram styles from modification |
| [toggle-diagram-protection-on-or-off-based-on-a-boolean-runtime-parameter.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/toggle-diagram-protection-on-or-off-based-on-a-boolean-runtime-parameter.cs) | `Diagram`, `Save`, `diagram` | Toggle diagram protection on or off based on a boolean runtime parameter |
| [unlock-the-height-attribute-of-a-specific-shape-identified-by-its-id.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/unlock-the-height-attribute-of-a-specific-shape-identified-by-its-id.cs) | `Diagram`, `Pages`, `Save` | Unlock the height attribute of a specific shape identified by its id |
| [unlock-the-rotation-attribute-of-a-specific-shape-identified-by-its-id.cs](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-protection/unlock-the-rotation-attribute-of-a-specific-shape-identified-by-its-id.cs) | `Diagram`, `Pages`, `Save` | Unlock the rotation attribute of a specific shape identified by its id |

## Command Reference

```bash
# Build the warmup project
cd compiler/CSharpRunner/_warmup
dotnet build

# Run a specific example (copy .cs content to Program.cs first)
dotnet run

# Build with verbose output
dotnet build --verbosity detailed
```

### .csproj Template

```xml
<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>disable</ImplicitUsings>
    <NoWarn>MSB3277</NoWarn>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="Aspose.Diagram">
      <HintPath>..\..\libs\Aspose.Diagram.dll</HintPath>
    </Reference>
  </ItemGroup>
</Project>
```

## Testing Guide

### Build Verification

```bash
dotnet build  # Must exit with rc=0, zero compiler errors
```

### Run Verification

```bash
dotnet run    # rc=0 = pass, rc!=0 with unhandled exception = fail
```

### Expected Output Patterns

| Pattern | Meaning |
|---------|---------|
| `rc=0` | ✅ Pass — example compiled and ran successfully |
| `rc=1` compiler errors | ❌ Fail — CS error codes indicate API misuse |
| `rc!=0` runtime | ⚠️ Check — may be acceptable (missing input file) |
| TIMEOUT | ✅ Pass — Console.ReadLine() treated as successful completion |

### Common CS Error Codes

| Code | Meaning | Fix |
|------|---------|-----|
| CS1061 | Member does not exist | Check correct property/method name |
| CS0200 | Property is read-only | Access via .Value instead of assignment |
| CS0029 | Cannot convert type | Use correct enum type (BOOL not bool) |
| CS0117 | Name does not exist in type | Check enum member name casing |
| CS0234 | Namespace not found | Add correct using directive |

## Pipeline

| Attempt | Strategy | Trigger |
|---------|----------|---------|
| 1 | MCP direct retrieval + code assembly | Always |
| 2 | MCP retrieval with injected rules | Attempt 1 fails |
| 3 | LLM repair with compiler errors + rules | Attempt 2 fails |

Only examples that pass both `dotnet build` and `dotnet run` are committed.

## General Tips

- See [root agents.md](https://github.com/aspose-diagram/agentic-net-examples/blob/main/agents.md) for repository-wide boundaries, anti-patterns, domain knowledge, and testing guidelines
- Always check `rules/rules.json` for the latest API correction rules
- SaveFileFormat enum must always be PascalCase: `Vsdx`, `Pdf`, `Png`, `Jpeg`, `Svg`, `Html` — never ALL_CAPS
- Diagram class does NOT implement IDisposable — never use `using (Diagram ...)`

## Key API Surface

- `AddShape`
- `Diagram`
- `Page`
- `Pages`
- `PdfSaveOptions`
- `Save`
- `Shapes`
- `diagram`
- `page`

## Real-World Use Cases

Common scenarios where **Aspose.Diagram for .NET** working with protection capabilities are applied in production applications:

- Locking diagram elements to prevent accidental modification
- Protecting shape formatting while allowing text edits
- Enforcing diagram structure integrity in automated pipelines

## Developer Q&A

Frequently asked questions about **Working With Protection** in **Aspose.Diagram for .NET**:

**Q: How do I get started with Working With Protection in Aspose.Diagram for .NET?**

A: Add a reference to `Aspose.Diagram.dll` (v26.9.0), include `using Aspose.Diagram;` and `using Aspose.Diagram.Saving;`, then use `Diagram diagram = new Diagram("input.vsdx");` to load a file. All examples in this category target `net8.0`.

**Q: Why do I get CS1674 when using `using (Diagram diagram = ...)`?**

A: `Diagram` does not implement `IDisposable` in Aspose.Diagram for .NET. Remove the `using` statement and declare the variable normally: `Diagram diagram = new Diagram("input.vsdx");`

**Q: Why does my code fail with CS0117 on `SaveFileFormat.VSDX`?**

A: `SaveFileFormat` enum members use PascalCase in Aspose.Diagram for .NET. Use `SaveFileFormat.Vsdx` (not `VSDX`). The same applies to all formats: `SaveFileFormat.Pdf`, `SaveFileFormat.Png`, `SaveFileFormat.Svg`.

**Q: Why do I get CS0029 when assigning `true` to a BOOL property?**

A: Aspose.Diagram uses its own `BOOL` enumeration type, not C# `bool`. Use `BOOL.True` and `BOOL.False` instead of plain `true`/`false` for all Aspose.Diagram BOOL properties.

## Related Categories

- [Working With Shapes](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-shapes) — shape creation, modification, and styling
- [Working With Pages](https://github.com/aspose-diagram/agentic-net-examples/tree/main/working-with-pages) — page management and navigation
- [Document Properties](https://github.com/aspose-diagram/agentic-net-examples/tree/main/document-properties) — document metadata and properties

## Category Statistics

- Total examples: 35
- Failed: 0
- Pass rate: 100.0%

## Failed Tasks

All tasks passed ✅

---

Updated: 2026-09-24 | Examples: 35 | Pass Rate: 100.0% | [↑ Root agents.md](https://github.com/aspose-diagram/agentic-net-examples/blob/main/agents.md) | [Aspose.Diagram for .NET](https://products.aspose.com/diagram/net/)