1. GroupDocs Documentation
    2. /
    3. GroupDocs.Annotation Product Family
    4. /
    5. GroupDocs.Annotation for .NET
    6. /
    7. Annotation basics
    8. /
    9. Add component to the document
    10. /
    11. Add checkbox component

    Add checkbox component

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    Checkbox component creates a checkbox as shown in the picture below:

    You can specify the following properties of the CheckBoxComponent class:

    • Box defines the annotation position
    • PenColor defines the frame color

    To add a checkbox component, follow these steps:

    1. Instantiate the Annotator class. Specify the input document path or stream.
    2. Instantiate the CheckboxComponent class. Specify the appropriate properties (position, page number, etc).
    3. Call the Add method. Specify the CheckboxComponent class.
    4. Call the Save method. Specify the output document path or stream.

    The following code snippet shows how to add CheckboxComponent to the document:

    using (Annotator annotator = new Annotator("input.pdf"))
{
	CheckBoxComponent checkbox = new CheckBoxComponent
    {
        Checked = true,
        Box = new Rectangle(100, 100, 100, 100),
        PenColor = 65535,
        Style = BoxStyle.Star,
        Replies = new List<Reply>
            {
                new Reply
                {
                    Comment = "First comment",
                    RepliedOn = DateTime.Now
                },
                new Reply
                {
                    Comment = "Second comment",
                    RepliedOn = DateTime.Now
                }
            }
    };
    annotator.Add(checkbox);
    annotator.Save("result.pdf");
}

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