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C# File.Move Method, Rename File
Rename a file with the File.Move method from the System.IO namespace.File.Move renames a file. It is a tested .NET Framework method. The File class in the System.IO namespace provides this convenient method. It performs a fast rename of the file you target. It sometimes throws exceptions.File
Example. The method that renames files is called File.Move. You must include the System.IO namespace at the top with a using directive or specify the fully qualified name "System.IO.File.Move".String Literal
Here: The program has different results depending on whether the source file exists, and whether the target file already exists.
Info: The program includes the System namespace and the System.IO namespace so that File, Console and IOException can be used.
Next: File.Move uses system routines to attempt to change the name of the first file to the name of the second file.
So: If successful, the first file will no longer exist. If unsuccessful, the operation will be terminated—nothing will be changed on disk.
C# program that renames files with File.Move
using System;
using System.IO;
class Program
{
static void Main()
{
//
// Move a file found on the C:\ volume.
// If the file is not found (SAM.txt doesn't exist),
// then you will get an exception.
//
try
{
File.Move(@"C:\SAM.txt", @"C:\SAMUEL.txt"); // Try to move
Console.WriteLine("Moved"); // Success
}
catch (IOException ex)
{
Console.WriteLine(ex); // Write error
}
}
}
Output
System.IO.FileNotFoundException: Could not find file 'C:\SAM.txt'.
File name: 'C:\SAM.txt'
at System.IO.__Error.WinIOError...
Exceptions. Whenever you are dealing with the file system, errors will occur. You must be prepared to recover from these errors (even if recovery means exiting). It is usually a mistake not to use exception handling around methods like File.Move.
Info: If the "SAMUEL.txt" file on the C volume already exists, you will get another exception.
Tip: To solve this problem, you can check the target path with the File.Exists method before attempting the File.Move.
File.ExistsIOExceptionSystem.IO.IOException:
Cannot create a file when that file already exists.
Uses. We mention some uses of File.Move. We determine when it is preferable to File.Copy and other approaches. Internally, File.Move uses the Win32Native.MoveFile function, which does a rename on the file system.
If you use File.Copy, you will actually be copying the data on the disk, which will be more resource-intensive and slower. However, you should avoid File.Move if you need to retain two copies of the data.
Summary. We renamed files in using the .NET Framework's File.Move method. We looked at the usage of this method on a file that exists and does not exist, and then noted some exceptions caused by this method.
Finally: We peeked inside the .NET Framework's implementation of File.Move and mentioned the difference between File.Copy and File.Move.
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- C# sizeof Keyword
- C# Skip and SkipWhile Examples
- C# Sleep Method (Pause)
- C# Sort Dictionary: Keys and Values
- C# Sort by File Size
- C# Sort, Ignore Leading Chars
- C# Sort KeyValuePair List: CompareTo
- 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