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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....Value)) { Console.WriteLine(reader...parser.GetText(i.PageIndex.Value)) { Console.WriteLine(reader...

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  2. Modifier et gérer les métadonnées dans les appl...

    Découvrez comment utiliser GroupDocs.Metadata for Python via .NET pour extraire, mettre à jour et supprimer les métadonnées dans vos applications....interpreted_value if not (property . interpreted_value is None ):...: { property . interpreted_value } " ) else : print( f "Nom de...

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  3. Handle XMP and EXIF Data of HEIF HEIC Images in...

    Manage XMP and EXIF data of HEIF, HEIC images in Java. Read, update, remove EXIF and XMP data using Metadata manipulation API within Java applications....metadata properties as name/value pairs. The following topics...can even provide your own key-value pair to set the custom XMP package...

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  4. Search reports | GroupDocs

    This article shows that how to perform the operations on generated search reports.... The default value is 10. Learn more about index...Thank you for your feedback! We value your opinion. Your feedback...

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  5. Extract text from Microsoft OneNote sections | ...

    This article explains that how to extract text from Microsoft OneNote sections presentations...Warning method returns null value if text extraction isn’t supported...Thank you for your feedback! We value your opinion. Your feedback...

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  6. Find metadata properties | GroupDocs

    Using the GroupDocs.Metadata for Java you can easily search metadata and extract desired metadata properties from PDF, DOCX, PPTX, XLSX, images, audio, video and many other files of different types in your Java solution...."Property name: %s, Property value: %s" , property . getName ()...Thank you for your feedback! We value your opinion. Your feedback...

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  7. Traverse a whole metadata tree | GroupDocs

    This article explains that the GroupDocs.Metadata for Java represents any loaded file as a tree consisting of metadata properties and nested metadata packages. You can easily iterate through the metadata tree... getName () + ", Value: " + property . getValue ();...Thank you for your feedback! We value your opinion. Your feedback...

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  8. Extrair dados de arquivos de banco de dados usa...

    O banco de dados é considerado parte integrante da maioria dos aplicativos. Seja um desktop, web ou aplicativo móvel, o banco de dados desempenha um papel vital no armazenamento, acesso e manipulação dos dados. Existem muitos sistemas de gerenciamento de banco de dados que permitem criar e gerenciar bancos de dados para você. No entanto, pode haver um cenário em que você precise de uma maneira de extrair dados de arquivos de banco de dados, ou seja, arquivo ....Value)) { Console.WriteLine(reader...parser.GetText(i.PageIndex.Value)) { Console.WriteLine(reader...

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  9. CSV to Word Report in CSharp

    Document Automation APIs to enrich .NET and Java applications to view, edit, annotate, convert, compare, e-sign, parse, split, merge, redact, or classify documents of almost all the popular file formats....arquivos CSV [Comma Separated Values][1] são amplamente usados para...

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  10. CSV to Word Report in Java

    Document Automation APIs to enrich .NET and Java applications to view, edit, annotate, convert, compare, e-sign, parse, split, merge, redact, or classify documents of almost all the popular file formats....中文 中國傳統的 Le Comma Separated Values (CSV) est un format de fichier...

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