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  1. 使用 C# 從數據庫文件中提取數據

    數據庫 被認為是大多數應用程序的組成部分。無論是桌面、Web 還是移動應用程序，數據庫在存儲、訪問和操作數據方面都起著至關重要的作用。有許多數據庫管理系統可以為您創建和管理數據庫。 但是，可能會出現這樣一種情況，即您需要一種方法來從數據庫文件(即 .db 文件)中提取數據，而無需安裝數據庫管理系統或編寫 SQL 查詢。在這種情況下，您將如何解析數據庫文件並從中獲取數據？ 在本文中，我將演示如何在不編寫 SQL 查詢的情況下輕鬆地從 SQLite 數據庫中的表中提取數據。我將使用 GroupDocs.Parser for .NET API，它支持通過 ADO.NET。 從 SQLite 數據庫 (.db) 中的表中提取數據的步驟 在 Visual Studio 中創建一個新項目。 從 NuGet 安裝適用於 GroupDocs.Parser for .NET。 添加以下命名空間。 using System; using System.Collections.Generic; using System.IO; using GroupDocs.Parser.Data; using GroupDocs.Parser.Options; 準備連接字符串。 string connectionString = string.Format("Provider=System.Data.Sqlite;Data Source={0};Version=3;", "sqlite.db"); 在 Parser 對像中加載數據庫文件。 using (Parser parser = new Parser(connectionString, new LoadOptions(FileFormat.Database))) { // 你的代碼在這裡 } 使用 Parser.GetToc 方法獲取數據庫中表的列表。 // 獲取表格列表 IEnumerable toc = parser....Value)) { Console.WriteLine(reader...parser.GetText(i.PageIndex.Value)) { Console.WriteLine(reader...

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  2. Working with metadata in WordProcessing documen...

    GroupDocs.Metadata for .NET provides functionality that allows working with different kinds of WordProcessing documents such as DOC, DOCX, ODT, etc. For the full list of supported document formats please refer to Supported Document Formats. Detecting the exact type of a document The following sample of code will help you to detect the exact type of a loaded document and extract some additional file format information. Load a WordProcessing document Extract the root metadata package Use the FileType property to obtain file format information AdvancedUsage.... Value ); } } As you can see the code...( "customProperty1" , "some value" ); root . DocumentProperties...

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  3. Introducing Z-Order for Text Signatures in Grou...

    We are back with another monthly release of our eSign API - GroupDocs.Signature for .NET. This release includes three new features, three improvements, and a bug fix. So in this article, I’ll give you a walk-through of the latest release. Support of Z-Order for Text Signatures Z-order determines the order for the overlapping, two-dimensional objects in an x-y plane. Put it simply, if X-axis represents the width and Y-axis represents the height then Z-order will represent the depth of the object....object with a higher Z-order value will appear in front of all...

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  4. Generate Reports

    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....فایل های CSV Comma Separated Values به طور گسترده برای تبادل داده...

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  5. Saving documents | Documentation

    Saving a document with method Save(), GroupDocs.Watermark puts it in the same folder as the original file, rewriting original. If you need to save the document to any custom location, you’ll have to use Save(string) method or Save(Stream) of Watermarker class. You can see examples of Save methods in one of these guides: Save document to the same file or stream Save document to the specified location Save document to the specified stream... We value your opinion. Your feedback...

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  6. Adding watermarks | Documentation

    Adding watermark to any supported document format using GroupDocs.Watermark consists of some easy steps... We value your opinion. Your feedback...

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  7. Loading files | Documentation

    GroupDocs.Metadata allows you to load password-protected documents and load files from different sources. For more details please refer to the following guides:... We value your opinion. Your feedback...

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  8. Using Tables of Word Processing Documents as Da...

    Following classes are added in GroupDocs.Assembly.Data namespace: DataTable DataColumn DataColumnCollection The Recipe Define template and output report documents Assemble a document using the external document table as a data source Download Data Source Document Managers Data.docx Template Importing Word Processing Table into Presentation.pptx The Code... We value your opinion. Your feedback...

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  9. Using Tables of Presentation Documents as Data ...

    Following classes are added in GroupDocs.Assembly.Data namespace: DataTable DataColumn DataColumnCollection The Recipe Define template and output report documents Assemble a document using the external document table as a data source Download Data Source Document Managers Data.pptx Template Using Presentation as Table of Data.pptx The Code... We value your opinion. Your feedback...

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  10. Working with List Reports - Numbered | Document...

    Articles in this section... We value your opinion. Your feedback...

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