In this tutorial, we will talk how to add dropdown component in PDF using C#. It also explains you how to utilize the annotation library and make a simple C# program to insert dropdown in PDF using C#. A dropdown in a PDF is typically referred to as a ‘combo box’ or ’list box’ form field. It allows you to select one option from a list of pre-defined options. To insert a dropdown in PDF using C# programming language, you will need to use annotation library. Here is how you can create a dropdown in PDF using C# programming language.

Steps to Add Dropdown Component in PDF using C#

1. Install GroupDocs.Annotation for .NET package from the NuGet
2. Add reference to the GroupDocs.Annotation namespace to insert dropdown in PDF
3. Create an Annotator object with input PDF path
4. Initialize DropdownComponent object and set some properties
5. Call Add method of Annotator class and pass dropdown Component object to it
6. Call Save method of Annotator class with resultant PDF path

After following these steps, you will be able to successfully insert dropdown field in your PDF document. The dropdown allows you to select from the list of options you specified. Without installing any extra software, the aforementioned procedure can be used to create dropdown in PDF using C# on any system that supports .NET. You can add the dropdown in PDF as needed by using the DropdownComponent class properties.

Code to Add Dropdown Component in PDF using C#

By following the steps outlined above, you can easily add dropdown in PDF using C# without any issue. Once you have saved the PDF, the dropdown component will be added and you will be able to select options from the dropdown when you open the PDF. We previously published an article on adding checkbox to PDF; for more information, see how to add checkbox component in PDF using C#.