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public static SqlMapper.GridReader QueryMultiple(this IDbConnection cnn, string sql, object param = null, IDbTransaction transaction = null, int? commandTimeout = null, CommandType? commandType = null) public static SqlMapper.GridReader QueryMultiple(this IDbConnection cnn, CommandDefinition comm...

This sixth iteration of the C# language is provided by the Roslyn compiler. This compiler came out with version 4.6 of the .NET Framework, however it can generate code in a backward compatible manner to allow targeting earlier framework versions. C# version 6 code can be compiled in a fully backwa...

var result = possibleNullObject ?? defaultValue; ParameterDetailspossibleNullObjectThe value to test for null value. If non null, this value is returned. Must be a nullable type.defaultValueThe value returned if possibleNullObject is null. Must be the same type as possibleNullObject. The n...

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A lambda expression is a syntax for creating anonymous functions inline. More formally, from the C# Programming Guide: A lambda expression is an anonymous function that you can use to create delegates or expression tree types. By using lambda expressions, you can write local functions that can ...

Properties combine the class data storage of fields with the accessibility of methods. Sometimes it may be hard to decide whether to use a property, a property referencing a field, or a method referencing a field. As a rule of thumb: Properties should be used without an internal field if th...

Typically a struct is used only when performance is very important. Since value types live on the stack, they can be accessed much quicker than classes. However, the stack has much less room than the heap, so structs should be kept small (Microsoft recommends structs take up no more than 16 bytes)...

LINQ is an acronym which stands for Language INtegrated Query. It is a concept which integrates a query language by offering a consistent model for working with data across various kinds of data sources and formats; you use the same basic coding patterns to query and transform data in XML documents,...

SpeechRecognitionEngine() SpeechRecognitionEngine.LoadGrammar(Grammar grammar) SpeechRecognitionEngine.SetInputToDefaultAudioDevice() SpeechRecognitionEngine.RecognizeAsync(RecognizeMode mode) GrammarBuilder() GrammarBuilder.Append(Choices choices) Choices(params string[] choices) Grammar(G...

Expression Trees are Expressions arranged in a treelike data structure. Each node in the tree is a representation of an expression, an expression being code. An In-Memory representation of a Lambda expression would be an Expression tree, which holds the actual elements (i.e. code) of the query, but ...

The process of overload resolution is described in the C# specification, section 7.5.3. Also relevant are the sections 7.5.2 (type inference) and 7.6.5 (invocation expressions). How overload resolution works will probably be changed in C# 7. The design notes indicate that Microsoft will roll out ...

When deciding on how to create a property, start with an auto-implemented property for simplicity and brevity. Switch to a property with a backing field only when circumstances dictate. If you need other manipulations beyond a simple set and get, you may need to introduce a backing field.

Lambda expressions provide a clear and concise way of implementing a single-method interface using an expression. They allow you to reduce the amount of code you have to create and maintain. While similar to anonymous classes, they have no type information by themselves. Type inference needs to happ...

An interface is a reference type, similar to a class, which can be declared by using interface keyword. Interfaces can contain only constants, method signatures, default methods, static methods, and nested types. Method bodies exist only for default methods and static methods. Like abstract classes...

Objects have states and behaviors. Example: A dog has states - color, name, breed as well as behaviors – wagging the tail, barking, eating. An object is an instance of a class. Class − A class can be defined as a template/blueprint that describes the behavior/state that the object of its type suppo...