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  1. 使用 C# 从数据库文件中提取数据

    数据库 被认为是大多数应用程序的组成部分。无论是桌面、Web 还是移动应用程序，数据库在存储、访问和操作数据方面都发挥着至关重要的作用。有许多数据库管理系统允许为您创建和管理数据库。 然而，当您需要一种从数据库文件(即 .db 文件) 中提取数据的方法时，可能会出现这样的情况，而无需安装数据库管理系统或编写 SQL 查询。在这种情况下，您将如何解析数据库文件并从中获取数据？ 在本文中，我将演示如何轻松地从 SQLite 数据库中的表中提取数据，而无需编写 SQL 查询。我将使用 GroupDocs.Parser for .NET API，它支持通过 [ADO.NET](https://en.wikipedia. org/wiki/ADO.NET) 。 从 SQLite 数据库 (.db) 中的表中提取数据的步骤 1. 在 Visual Studio 中创建一个新项目。 2. 从 NuGet 安装 GroupDocs.Parser for .NET。 3. 添加以下命名空间。 using System; using System.Collections.Generic; using System.IO; using GroupDocs.Parser.Data; using GroupDocs.Parser.Options; 4. 准备连接字符串。 string connectionString = string.Format("Provider=System.Data.Sqlite;Data Source={0};Version=3;", "sqlite.db"); 5. 在 Parser 对象中加载数据库文件。 using (Parser parser = new Parser(connectionString, new LoadOptions(FileFormat.Database))) { // 你的代码在这里 } 6....无论是桌面、Web 还是移动应用程序，数据库在存储、访问和操作数据方面都发挥...

    blog.groupdocs.com/zh/parser/extract-data-from-...
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  2. Render archives as HTML, PDF, and image files |...

    Convert archive files (ZIP, RAR, etc.) to HTML, PDF, PNG, or JPEG using GroupDocs.Viewer for Python....NET application (web or desktop). To start using the...navigation bar at the top of the web page. Render archive files as...

    docs.groupdocs.com/viewer/python-net/render-arc...
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  3. Announcing a new Modern UI for GroupDocs.Viewer...

    It is an exciting moment for me to announce that a new UI for GroupDocs.Viewer for Java has been released. Re-written from scratch with usability in mind, the new user interface has a good look, better user experience and a neat feeling. GroupDocs.Viewer for Java is an API to render vast variety of documents into HTML and images. It allows you to convert pages of a document into separate HTML or image files which can be later be used in your application....when using it in any modern day web browser. # HTML-based RenderingThe...

    blog.groupdocs.com/viewer/announcing-modern-ui-...
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  4. Numeric Range Search in C#

    Effortlessly perform numeric range search in C# with GroupDocs.Search. Learn how to search numeric ranges in documents C# using advanced and efficient techniques....building a desktop application, a web-based solution, or deploying...

    kb.groupdocs.com/search/net/numeric-range-searc...
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  5. Convert PDF to JPG using Node.js

    Learn how to convert PDF to JPG using Node.js with GroupDocs.Conversion. Easily export PDF to JPG in Node.js application with simple steps and code example....into high-quality images for web applications, reports, or archives...

    kb.groupdocs.com/conversion/nodejs/convert-pdf-...
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  6. Update EPUB Metadata using C# – .NET Metadata E...

    Discover ways to view and edit EPUB eBook metadata using C#. Programmatically edit EPUB specific properties and Dublin Core items using C#....elements, formatted using standard web technologies like HTML and CSS...

    blog.groupdocs.com/metadata/view-edit-epub-meta...
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  7. Render SVG as PDF using Python

    In this topic, you will learn how to render SVG as PDF using Python. Also, you will get code and steps to convert SVG to PDF in Python for sharing vector graphics....that can be easily displayed in web browsers. The guide also highlights...

    kb.groupdocs.com/viewer/python/render-svg-as-pd...
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  8. Introducing GroupDocs.Comparison for Java - Com...

    After attaining a remarkable attention from .NET developers, GroupDocs team successfully ported GroupDocs.Comparison for Java API from Next Generation GroupDocs.Comparison for .NET. API provides facility to compare supported file formatted documents in a very convenient way. It supports numerous exciting document comparison features such as documents comparison + merging. It compares both content and styles in the documents and saves the difference summary in a separate result file. Furthermore, API supports multitude of file formatted documents such as, but not limited to Microsoft Office, PDF, Text, HTML documents....Whether your application is a web/desktop or console based, you...

    blog.groupdocs.com/comparison/groupdocs-compari...
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  9. GroupDocs Viewer displaying as Unlicensed versi...

    We are encountering an issue with the Groupdocs Viewer where the error message “Unlicensed version of GroupDocs.Viewer for .NET allows 15 views per hour” occasionally appears when previewing media files. The issue appea…...Windows Server 2022 Standard while Web 2 & Web3 Servers are Windows...

    forum.groupdocs.com/t/groupdocs-viewer-displayi...
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  10. Convert CSV to XML - Online and Free Image Conv...

    Convert CSV to XML format using free online conversion tool. Developers can use .NET, Java, and Cloud API to build CSV to XML Converter....be used for data exchange in web services, APIs, and other similar...

    blog.groupdocs.com/conversion/convert-csv-to-xml/
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