Introduction to LINQ Queries (C#)

最新推荐文章于 2025-08-13 15:40:32 发布

原创最新推荐文章于 2025-08-13 15:40:32 发布 · 175 阅读

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#linq #c# #query #collections #basic #types

本文介绍LINQ如何简化不同数据源的查询过程，通过一致的模型处理XML文档、SQL数据库等数据，使开发者能够专注于对象操作，减少学习多种查询语言的需求。

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http://msdn.microsoft.com/en-us/library/bb397906.aspx

A query is an expression that retrieves data from a data source. Queries are usually expressed in a specialized query language. Different languages have been developed over time for the various types of data sources, for example SQL for relational databases and XQuery for XML. Therefore, developers have had to learn a new query language for each type of data source or data format that they must support. LINQ simplifies this situation by offering a consistent model for working with data across various kinds of data sources and formats. In a LINQ query, you are always working with objects. You use the same basic coding patterns to query and transform data in XML documents, SQL databases, ADO.NET Datasets, .NET collections, and any other format for which a LINQ provider is available.