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C# DriveInfo Examples
Use the DriveInfo class, calling DriveInfo.GetDrives and AvailableFreeSpace.DriveInfo. Computers often have several drives. On Windows, these use letters such as C or D as names. In the .NET Framework, the DriveInfo class provides helper methods for checking these drives. We can get all drives.
Example. Often you may already know the drive name you want to access. Most Windows computers use the C drive name. In this program, we use the DriveInfo constructor and pass the one-character string literal "C".ConstructorString Literal
Then: We display the values returned by the properties on the DriveInfo instance. The free space properties return long values.
LongOutput: The free space numbers are in bytes. It is possible to convert these to megabytes and gigabytes using custom helper methods.
Convert Bytes, MegabytesC# program that uses DriveInfo
using System;
using System.IO;
class Program
{
static void Main()
{
DriveInfo info = new DriveInfo("C");
// [1] Print sizes.
Console.WriteLine(info.AvailableFreeSpace);
Console.WriteLine(info.TotalFreeSpace);
Console.WriteLine(info.TotalSize);
Console.WriteLine();
// [2] Format and type.
Console.WriteLine(info.DriveFormat);
Console.WriteLine(info.DriveType);
Console.WriteLine();
// [3] Name and directories.
Console.WriteLine(info.Name);
Console.WriteLine(info.RootDirectory);
Console.WriteLine(info.VolumeLabel);
Console.WriteLine();
// [4] Ready.
Console.WriteLine(info.IsReady);
}
}
Output
682166767616
682166767616
984045580288
NTFS
Fixed
C:\
C:\
OS
True
Example 2. Sometimes a program will need to get an array of all the drives on the computer. The DriveInfo.GetDrives method is available for this purpose. It returns an array of DriveInfo class instances.
Here: We use the foreach-loop on the result of the GetDrives method. The code from the first example could be added to the loop.
ForeachC# program that gets all drives
using System;
using System.IO;
class Program
{
static void Main()
{
// Print all drive names.
var drives = DriveInfo.GetDrives();
foreach (DriveInfo info in drives)
{
Console.WriteLine(info.Name);
}
}
}
Output
C:\
D:\
Summary. Helper methods such as DriveInfo are not usually needed in programs. But when they are needed, they make programs much easier to develop. The DriveInfo class can be combined with the DirectoryInfo and FileInfo classes.FileInfo
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- C# Sort Strings by Length
- C# Thread.SpinWait Example
- C# Math.Sqrt Method
- C# stackalloc Operator
- C# StackOverflowException
- C# StartsWith and EndsWith String Methods
- C# Static Array
- C# Static Dictionary
- C# Stopwatch Examples
- C# Stream
- C# StreamReader ReadToEnd Example (Read Entire File)
- C# StreamReader ReadToEndAsync Example (Performance)
- C# StreamReader Examples
- C# StreamWriter Examples
- C# String Append (Add Strings)
- C# String Compare and CompareTo Methods
- C# String Constructor (new string)
- C# string.Copy Method
- C# CopyTo String Method: Put Chars in Array
- C# Empty String Examples
- C# String Equals Examples
- C# String For Loop, Count Spaces in String
- C# string.Intern and IsInterned
- C# String IsUpper, IsLower
- C# String Length Property: Get Character Count
- C# String Literal: Newline and Quote Examples
- C# StringBuilder Capacity
- C# StringBuilder Clear (Set Length to Zero)
- C# StringBuilder Data Types
- C# StringBuilder Performance
- C# StringBuilder Equals (If Chars Are Equal)
- C# StringBuilder Memory
- C# StringBuilder ToString: Get String From StringBuilder
- C# StringWriter Class
- C# Sum Method: Add up All Numbers
- C# Switch Char, Test Chars With Cases
- C# Switch Enum
- C# System (using System namespace)
- C# Tag Property: Windows Forms
- C# TextInfo Examples
- C# TextReader, Returned by File.OpenText
- C# TextWriter, Returned by File.CreateText
- C# this Keyword
- C# ThreadPool
- C# Thread Join Method (Join Array of Threads)
- C# ThreadPool.SetMinThreads Method
- C# TimeZone Examples
- C# Get Title From HTML With Regex
- C# ToArray Extension Method
- C# ToCharArray: Convert String to Array
- C# ToDictionary Method
- C# Token
- C# ToList Extension Method
- C# ToLookup Method (Get ILookup)
- C# ToLower and ToUpper: Uppercase and Lowercase Strings
- ToolStripContainer Control: Dock, Properties
- C# ToolTip: Windows Forms
- C# ToString Integer Optimization
- C# ToString: Get String From Object
- C# ToTitleCase Method
- C# TrackBar: Windows Forms
- C# Tree and Nodes Example: Directed Acyclic Word Graph
- C# TreeView Tutorial
- C# Trim Strings
- C# Thread Methods
- C# History
- C# Features
- C# Variables
- C# Data Types
- C# Operators
- C# Keywords
- C# New Features | C# Version Features
- C# Programs
- C# Program to swap numbers without third variable
- C# Program to convert Decimal to Binary
- C# Program to Convert Number in Characters
- C# Program to Print Alphabet Triangle
- C# Program to print Number Triangle
- C# Program to generate Fibonacci Triangle
- C# String Compare() method
- C# String CompareOrdinal() method
- C# String CompareTo() method
- C# String Concat() method
- C# String Contains() method
- C# String CopyTo() method
- C# String EndsWith() method
- C# String Equals() method
- C# String Format() method
- C# String IndexOf() method
- C# String Insert() method
- C# String Intern(String str) method
- C# String IsInterned() method
- C# String Normalize() method
- C# String IsNullOrEmpty() method
- C# String IsNullOrWhiteSpace() method
- C# String Join() method
- C# String LastIndexOf() method
- C# String LastIndexOfAny() method
- C# String PadLeft() method
- C# String PadRight() method
- C# Nullable
- C# String Remove() method
- C# String Replace() method
- C# String Split() method
- C# String StartsWith() method
- C# String SubString() method
- C# Partial Types
- C# Iterators
- C# Delegate Covariance
- C# Delegate Inference
- C# Anonymous Types
- C# Extension Methods
- C# Query Expression
- C# Partial Method
- C# Implicitly Typed Local Variable
- C# Object and Collection Initializer
- C# Auto Implemented Properties
- C# Dynamic Binding
- C# Named and Optional Arguments
- C# Asynchronous Methods
- C# Caller Info Attributes
- C# Using Static Directive
- C# Exception Filters
- C# Await in Catch Finally Blocks
- C# Default Values for Getter Only Properties
- C# Expression Bodied Members
- C# Null Propagator
- C# String Interpolation
- C# nameof operator
- C# Dictionary Initializer
- C# Pattern Matching
- C# Tuples
- C# Deconstruction
- C# Local Functions
- C# Binary Literals
- C# Ref Returns and Locals
- C# Expression Bodied Constructors and Finalizers
- C# Expression Bodied Getters and Setters
- C# Async Main
- C# Default Expression