Category
C#/VB.NET: Protect or Unprotect a Word Document
2023-09-04 07:33:04
Word documents can be protected in a variety of ways, depending on the security requirements. To prevent unauthorized people from opening a document, you can encrypt it with a password. To allow users to open the document, but not edit or modify its content, you can make the document read-only or mark it as final. To allow users to modify parts of the document, you can lock the entire document but let specified sections available for editing. This article focuses on how to protect or unprotect a Word document in C# and VB.NET using Spire.Doc for .NET.
C#/VB.NET: Add Document Properties to Word Documents
2023-09-04 06:35:20
Document properties (also known as metadata) are a set of information about a document. All Word documents come with a set of built-in document properties, including title, author name, subject, keywords, etc. In addition to the built-in document properties, Microsoft Word also allows users to add custom document properties to Word documents. In this article, we will explain how to add these document properties to Word documents in C# and VB.NET using Spire.Doc for .NET.
C#/VB.NET: Find and Highlight Specific Text in PDF
2023-08-30 07:27:47
Searching for a specific text in a PDF document can sometimes be annoying, especially when the document contains hundreds of pages. Highlighting the text with a background color can help you find and locate it quickly. In this article, you will learn how to find and highlight specific text in PDF in C# and VB.NET using Spire.PDF for .NET.
C#/VB.NET: Extract Images from PDF
2023-08-30 06:53:57
Images are often used in PDF documents to present information in an easily understandable manner. In certain cases, you may need to extract images from PDF documents. For example, when you want to use a chart image from a PDF report in a presentation or another document. This article will demonstrate how to extract images from PDF in C# and VB.NET using Spire.PDF for .NET.
C#/VB.NET: Extract Text from PDF Documents
2023-08-30 06:44:35
PDF documents are fixed in layout and do not allow users to perform modifications in them. To make the PDF content editable again, you can convert PDF to Word or extract text from PDF. In this article, you will learn how to extract text from a specific PDF page, how to extract text from a particular rectangle area, and how to extract text by SimpleTextExtractionStrategy in C# and VB.NET using Spire.PDF for .NET.
C#/VB.NET: Insert, Replace or Delete Images in PDF
2023-08-30 06:35:25
Compared with text-only documents, documents containing images are undoubtedly more vivid and engaging to readers. When generating or editing a PDF document, you may sometimes need to insert images to improve its appearance and make it more appealing. In this article, you will learn how to insert, replace or delete images in PDF documents in C# and VB.NET using Spire.PDF for .NET.
C#/VB.NET: Add Image Watermarks to PDF
2023-08-24 09:06:40
An image watermark is usually a logo or sign that appears on the background of digital documents, indicating the copyright owner of the content. Watermarking your PDF document with an image can prevent your data from being reused or modified. This article demonstrates how to add an image watermark to PDF in C# and VB.NET using Spire.PDF for .NET.
C#/VB.NET: Add Text Watermarks to PDF
2023-08-24 08:54:04
To prevent your PDF document from being used in an unauthorized manner, you can watermark the document with text or an image. In this article, you will learn how to programmatically add text watermarks (single-line and multi-line watermarks) to PDF in C# and VB.NET using Spire.PDF for .NET.