# LineAnnotation Class

> The line annotation displays a single straight line on a PDF page.

- Product: Adobe PDF Library 18
- Language: .NET
- Version: APDFL18.0.5PlusP2e
- HTML page: https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/LineAnnotation
- Version index: https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/llms.txt

```csharp
class LineAnnotation : Annotation
```

**Namespace:** `Datalogics::PDFL`

**Inherits from:** [`Annotation`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Annotation.md)

## Description

The line annotation displays a single straight line on a PDF page.

When opened it displays a pop-up window containing the text of an associated note, placed at specific x/y coordinates for starting and ending points of the line.

**Referenced by:** [`LineAnnotation`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/LineAnnotation.md)

**Uses types:** [`Annotation`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Annotation.md), [`AnnotationFlags`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/enum/AnnotationFlags.md), [`Color`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Color.md), [`Form`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Form.md), [`LineAnnotation`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/LineAnnotation.md), [`LineEndingStyle`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/enum/LineEndingStyle.md), [`OptionalContentContext`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/OptionalContentContext.md), [`OptionalContentMembershipDict`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/OptionalContentMembershipDict.md), [`PDFDict`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/PDFDict.md), [`Page`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Page.md), [`Point`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Point.md), [`Rect`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Rect.md)

## Constructors

### LineAnnotation

```csharp
Datalogics.PDFL.LineAnnotation.LineAnnotation(Page page, Rect initialRect, Point startPoint, Point endPoint)
```

*constructor*

**Parameters**

- `page` ([`Page`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Page.md)): The page to which the LineAnnotation is added.
- `initialRect` ([`Rect`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Rect.md)): A rectangle specifying the annotation's bounds, specified in user space coordinates.
- `startPoint` ([`Point`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Point.md)): The starting coordinate of the line, in user space.
- `endPoint` ([`Point`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Point.md)): The ending coordinate of the line, in user space.

Create a new LineAnnotation at the end of a page's annotation array. To create a LineAnnotation and place it elsewhere in the page's annotation array, use the version of the constructor that takes an array position.

### LineAnnotation

```csharp
Datalogics.PDFL.LineAnnotation.LineAnnotation(Page page, Rect initialRect, Point startPoint, Point endPoint, int addAfter)
```

*constructor*

**Parameters**

- `page` ([`Page`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Page.md)): The page to which the annotation is added.
- `initialRect` ([`Rect`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Rect.md)): A rectangle specifying the annotation's bounds, specified in user space coordinates.
- `startPoint` ([`Point`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Point.md)): The starting coordinate of the line, in user space.
- `endPoint` ([`Point`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/Point.md)): The ending coordinate of the line, in user space.
- `addAfter` (`int`): Where to add the annotation in the page's annotation array. To add the annotation to the end of the array, pass a value of -2 or use the alternate version of this constructor that does not take an index (this is generally what you should do unless you have a need to place the annotation at a special location in the array). Passing a value of -1 adds the annotation to the beginning of the array. Passing other negative values produces undefined results.

Create a new LineAnnotation at a specific index in the page's annotation array.

## Properties

### AnnotationFeatureLevel

```csharp
double Datalogics.PDFL.Annotation.AnnotationFeatureLevel { get; set; }
```

### BorderStyle

```csharp
string Datalogics.PDFL.LineAnnotation.BorderStyle { get; set; }
```

### BorderStyleDashPattern

```csharp
System.Collections.Generic.IList<System.Double> Datalogics.PDFL.LineAnnotation.BorderStyleDashPattern { get; set; }
```

### BorderStyleWidth

```csharp
double Datalogics.PDFL.LineAnnotation.BorderStyleWidth { get; set; }
```

### Color

```csharp
Color Datalogics.PDFL.Annotation.Color { get; set; }
```

### Contents

```csharp
string Datalogics.PDFL.Annotation.Contents { get; set; }
```

### EndPoint

```csharp
Point Datalogics.PDFL.LineAnnotation.EndPoint { get; set; }
```

### EndPointEndingStyle

```csharp
LineEndingStyle Datalogics.PDFL.LineAnnotation.EndPointEndingStyle { get; set; }
```

### Flags

```csharp
AnnotationFlags Datalogics.PDFL.Annotation.Flags { get; set; }
```

### InteriorColor

```csharp
Color Datalogics.PDFL.Annotation.InteriorColor { get; set; }
```

### NormalAppearance

```csharp
Form Datalogics.PDFL.Annotation.NormalAppearance { get; set; }
```

### Opacity

```csharp
double Datalogics.PDFL.Annotation.Opacity { get; set; }
```

### OptionalContentMembershipDict

```csharp
OptionalContentMembershipDict Datalogics.PDFL.Annotation.OptionalContentMembershipDict { get; set; }
```

### PDFDict

```csharp
PDFDict Datalogics.PDFL.Annotation.PDFDict { get; }
```

### Rect

```csharp
Rect Datalogics.PDFL.Annotation.Rect { get; set; }
```

### StartPoint

```csharp
Point Datalogics.PDFL.LineAnnotation.StartPoint { get; set; }
```

### StartPointEndingStyle

```csharp
LineEndingStyle Datalogics.PDFL.LineAnnotation.StartPointEndingStyle { get; set; }
```

### Subtype

```csharp
string Datalogics.PDFL.Annotation.Subtype { get; }
```

### Title

```csharp
string Datalogics.PDFL.Annotation.Title { get; set; }
```

## Methods

### Dispose

```csharp
void Datalogics.PDFL.Annotation.Dispose()
```

**Returns:** `void`

### Equals

```csharp
override bool Datalogics.PDFL.Annotation.Equals(object obj)
```

**Parameters**

- `obj` (`object`)

**Returns:** `override bool`

### GenerateAppearance

```csharp
override Form Datalogics.PDFL.LineAnnotation.GenerateAppearance()
```

**Returns:** `override Form`

A new Form containing the generated appearance, or null if the appearance could not be generated (for example, due to an invalid border style).

Generate a new appearance stream with the current annotation properties.

The resulting Form can then be used to set the annotation's appearance, such as by calling SetNormalAppearance.

### HasRichTextData

```csharp
bool Datalogics.PDFL.Annotation.HasRichTextData()
```

**Returns:** `bool`

true if the annotation contains Rich Text String content.

Checks the annotation for Rich Text String content (PDFReference 1.7 Section 8.6.2). Annotations that contain Rich Text String content and do not have a normal appearance set will not be visible when rendering the page.

### IsCurrentlyVisible

```csharp
bool Datalogics.PDFL.Annotation.IsCurrentlyVisible(OptionalContentContext occ)
```

**Parameters**

- `occ` ([`OptionalContentContext`](https://docs.datalogics.com/apdfl18/DotNet/APDFL18.0.5PlusP2e/class/OptionalContentContext.md)): The optional content context in which to check visibility.

**Returns:** `bool`

true if the annotation is currently visible.

Tests whether an annotation is visible in a given optional content context, considering the current ON-OFF states of the optional-content groups in the optional-content dictionary (OCMD) and the dictionary's visibility policy.

If the annotation occurs more than once within the content, this method only checks the visibility of the first occurrence of the annotation.

This method determines visibility without considering the visbility of the Content object that the annotation belongs to. To determine the visibility of an annotation while taking the Content's visibility into consideration, use the alternate version of this method.

### ToString

```csharp
override string Datalogics.PDFL.Annotation.ToString()
```

**Returns:** `override string`

A string describing this annotation, including its type and rectangle.

Returns a string representation of this annotation.