In Visual Studio, is there a command to collapse/expand all the sections of code in a file?

 

In Visual Studio, you can use keyboard shortcuts or menu options to quickly collapse or expand all the sections of code in a file. Here's how to do it:

Using Keyboard Shortcuts:

1. To collapse all code sections in a file, press Ctrl+M, Ctrl+O.

2. To expand all code sections in a file, press Ctrl+M, Ctrl+L.

Using Menu Options:

Alternatively, you can use the menu options to collapse and expand code sections:

1. To collapse all code sections, go to Edit > Outlining > Collapse to Definitions.

2. To expand all code sections, go to Edit > Outlining > Toggle All Outlining.

Here's a step-by-step example of how to use the keyboard shortcuts:

Suppose you have the following code with expandable/collapsible sections:

csharp

using System;

namespace MyNamespace
{
    class Program
    {
        static void Main(string[] args)
        {
            // Section 1
            Console.WriteLine("Hello, World!");
            
            #region Section 2
            for (int i = 0; i < 5; i++)
            {
                Console.WriteLine($"Iteration {i}");
            }
            #endregion
            
            /* Section 3
               This is a multiline comment.
               It can span multiple lines. */
        }
    }
}

1. Place your cursor anywhere within the code file.

2. Press Ctrl+M, Ctrl+O to collapse all sections. This will collapse Sections 2 and 3, leaving only Section 1 visible.

3. Press Ctrl+M, Ctrl+L to expand all sections. This will expand all collapsed sections, making the entire code visible.

Using these keyboard shortcuts or menu options can help you quickly navigate and manage sections of code in Visual Studio.