What is the syntax of if else statement in C#?

C# has the following conditional statements: Use if to specify a block of code to be executed, if a specified condition is true. Use else to specify a block of code to be executed, if the same condition is false. Use else if to specify a new condition to test, if the first condition is false.

Does C# have Elseif?

C# supports if else statements inside another if else statements. This are called nested if else statements. The nested if statements make the code more readable. The following example demonstrates the nested if else statements.

What is #if and #endif in C#?

From Microsoft Docs: When the C# compiler encounters an #if directive, followed eventually by an #endif directive, it compiles the code between the directives only if the specified symbol is defined. The #if statement in C# is Boolean and only tests whether the symbol has been defined or not.

Is and as in C# example?

The is operator returns true if the given object is of the same type, whereas the as operator returns the object when they are compatible with the given type. The is operator returns false if the given object is not of the same type, whereas the as operator returns null if the conversion is not possible.

How do you optimize if else statements in C#?

Three ways to simplify complex C# if statements

  1. Make if statements simple for better C# code.
  2. Option 1: Simplify complex C# if statements with nested ifs.
  3. Option 2: Use interim variables to simplify C#’s if.
  4. Option 3: Turn nested if statements into a single if.
  5. Bonus: turn cascaded ifs into a single if statement.

How do I use endif?

The endif command is used to terminate a multiple line if command. The command can either be specified as a single word, ‘endif’ or as two separate words, ‘end if’. For more detailed information and further examples, please see the if command page.

What is #region in C#?

It lets you specify a block of code that you can expand or collapse when using the outlining feature of the Visual Studio Code Editor. It should be terminated with #endregion.