What is lambda expressions in C#?

Lambda expressions in C# are anonymous functions that can be used to create delegates or expression tree types. They provide a concise syntax for defining methods without explicitly declaring a named method[1][2][3].

The syntax for a lambda expression is:

(input-parameters) => expression

or

(input-parameters) => { <sequence-of-statements> }

The left side specifies the input parameters (if any) and the right side is the expression or statement block[4].

Some key points about lambda expressions:

• They are used to create anonymous functions that can be passed as arguments to methods or assigned to variables[1][2]
• The types of the input parameters can be explicitly specified or inferred by the compiler[4]
• They can be converted to delegate types like Func or Action based on the parameter and return types[4]
• They are commonly used ...