By Marco Russo
Dig into LINQ -- and rework how you paintings with data.
With LINQ, you could question info from various assets -- together with databases, gadgets, and XML documents -- without delay from Microsoft visible uncomplicated or C#. Guided by means of data-access specialists who have labored intensive with LINQ and the Microsoft improvement groups, you are going to find out how .NET Framework four implements LINQ, and the way to use it. transparent examples make it easier to carry your personal data-access ideas speedier and with leaner code.
Discover how you can:
- Use LINQ to question databases, item collections, arrays, XML, Microsoft Excel records, and different resources
- Apply LINQ most sensible practices to construct data-enabled .NET functions and providers
- Manipulate info in a relational database with ADO.NET Entity Framework or LINQ to SQL
- Read, write, and deal with XML content material extra successfully with LINQ to XML
- Extend LINQ to aid extra facts resources by way of developing customized operators and prone
- Examine different implementations, similar to LINQ to SharePoint
- Use LINQ in the information, company, and repair layers of a allotted software
- Get code samples on the internet
Read or Download Programming Microsoft LINQ in .NET Framework 4 PDF
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Extra resources for Programming Microsoft LINQ in .NET Framework 4
However, most of your data will be saved in a relational database, so it is necessary to convert many types of data between these two worlds. LINQ handles this conversion for you automatically, making the differences in type systems almost completely transparent to the programmer. More Info There are some limitations in the capability to perform conversions between different type systems and LINQ. You will find some information about this topic throughout the book, and you can find a more detailed type system compatibilities table in the product documentation.
For example, the ToList method produces a typed List
Price %>/> %> Note This syntax is an exclusive feature of Visual Basic. There is no equivalent syntax in C#. Chapter 1 LINQ Introduction 17 You can appreciate the power of this solution, which keeps the XML syntax without losing the stability of typed code and transforms a set of entities selected via LINQ to SQL into an XML Infoset. ” Language Integration Language integration is a fundamental aspect of LINQ. 0 and Visual Basic 2008. With it, you can write code such as you’ve seen earlier.
Programming Microsoft LINQ in .NET Framework 4 by Marco Russo