[VB.Net] System.IO.File Functions

[VB.Net] System.IO.File Functions - Printable Version

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[VB.Net] System.IO.File Functions - 1234hotmaster - 02-20-2011

IO.File.AppendText & IO.File.AppendAllText & IO.File.CreateText & IO.File.WriteAllText & IO.File.WriteAllLines & IO.File.WriteAllBytes

Explanation: These functions are used to create TextFiles or write bytes.

Example:

Code:
IO.File.AppendText("C:\text.txt")
IO.File.AppendAllText("C:\text.txt", Textbox1.text)
IO.File.CreateText("C:\Text.txt")
IO.File.WriteAllText("C:\test.txt", Textbox1.text)
IO.File.WriteAllLines("C:\text.txt", Textbox1.text)
IO.File.WriteAllBytes("C:\file.exe", Nothing)

Format:

Code:
IO.File.AppendText(Path)
IO.File.AppendAllText(Path, Contents)
IO.File.CreateText(Path)
IO.File.WriteAllText(Path, Contents)
IO.File.WriteAllLines(Path, Contents)
IO.File.WriteAllBytes(Path, Byte)

IO.File.Copy

Explanation: This function is used to copy files.

Example:

Code:
IO.File.Copy(Application.ExecutablePath, "C:\copied.exe")

Format:

Code:
IO.File.Copy(SourceFileName, Destinationfilename)

IO.File.Create

Explanation: Creates a file of any format.

Example:

Code:
IO.File.Create("C:\new.exe")

Format:

Code:
IO.File.Create(Path)

IO.File.Delete

Explanation: Deletes an existing file.

Example:

Code:
IO.File.Delete("C:\file.exe")

Format:

Code:
IO.File.Delete(Path)

IO.File.Exists

Explanation: Gets a boolean ( True or False ) value whether the file exists or no.

Example:

Code:
If IO.File.Exists("C:\file.exe") = True Then
MsgBox("File Exists")
Else
MsgBox("File Does not Exist")
End If

Format:

Code:
IO.File.Exists(Path)

IO.File.GetAttributes

Explanation: Gets the value of a file's Attribute.

Example:

Code:
MsgBox(IO.File.GetAttributes("C:\hidden.exe"))

Format:

Code:
IO.File.GetAttributes(Path)

IO.File.GetCreationTime & IO.File.GetCreationTimeUtc & IO.File.GetLastAccessTime & IO.File.GetLastAccessTimeUtc & IO.File.GetLastWriteTime

Explanation: Gets values of a file's Creation time, which the time a file is created and its date for utc ones. And gets its last editing time or creation time or when its last opened.

Example:

Code:
IO.File.GetCreationTime("C:\file.exe")
IO.File.GetCreationTimeUtc("C:\file.exe")
IO.File.GetLastAccessTime("C:\file.exe")
IO.File.GetLastAccessTimeUtc("C:\file.exe")
IO.File.GetLastWriteTime("C:\file.exe")

Format:

Code:
IO.File.GetCreationTime(Path)
IO.File.GetCreationTimeUtc(Path)
IO.File.GetLastAccessTime(Path)
IO.File.GetLastAccessTimeUtc(Path)
IO.File.GetLastWriteTime(Path)

IO.File.Move

Explanation: Moves a file to a new directory. Same like Cut and Paste.

Example:

Code:
IO.File.Move(Application.ExecutablePath, "C:\moved.exe")

Format:

Code:
IO.File.Move(SourceFileName, Destinationfilename)

IO.File.Open & IO.File.OpenRead & IO.File.OpenText & IO.File.OpenWrite

Explanation: Open's a file for either reading or writing to it.

Example:

Code:
IO.File.Open("C:\file.exe", IO.FileMode.Open)
Textbox1.text = IO.File.OpenRead("C:\text.txt")
Textbox1.text = IO.File.OpenText("C:\text.txt")
IO.File.OpenWrite("C:\text.txt")

Format:

Code:
IO.File.Open(Path, Mode)
IO.File.OpenRead(Path)
IO.File.OpenText(Path)
IO.File.OpenWrite(Path)

IO.File.ReadAllBytes & IO.File.ReadAllLines & IO.File.ReadAllText

Explanation: Opens a file to read its byte array or all Textlines or its text.

Example:

Code:
Dim aByteArray As Byte() = IO.File.ReadAllBytes("C:\file.exe")
Dim aStringArray As String() = IO.File.ReadAllLines("C:\text.txt")
Dim aString As String = IO.File.ReadAllText("C:\text.txt")

Format:

Code:
IO.File.ReadAllBytes(Path)
IO.File.ReadAllLines(Path)
IO.File.ReadAllText(Path)

IO.File.Replace

Explanation: Rewrites a existing file and makes a backup of it.

Example:

Code:
IO.File.Replace(Application.ExecutablePath, "C:\copy.exe", "C:\backup.exe")

Format:

Code:
IO.File.Replace(SourceFileName, DestinationFileName, DestinationBackupFileName)

IO.File.SetAttributes

Explanation: Sets or changes a file's attribute.

Example:

Code:
IO.File.SetAttributes("C:\Unhidden.exe", FileAttribute.Hidden)

Format:

Code:
IO.File.SetAttributes(Path, FileAttributes)

IO.File.SetCreationTime & IO.File.SetCreationTimeUtc & IO.File.SetLastAccessTime & IO.File.SetLastAccessTimeUtc & IO.File.SetLastWriteTime

Explanation: Can set a file's creation date, the same date and time it got created or its last opened date and time or its last Edited time. Very useful for virus makers to fool the opener to think the binded file's creation date is like 2 years ago.

Example:

Code:
IO.File.SetCreationTime("C:\file.exe", Date.Today)
IO.File.SetCreationTimeUtc("C:\file.exe", Date.UtcNow)
IO.File.SetLastAccessTime("C:\file.exe", Date.Now)
IO.File.SetLastAccessTimeUtc("C:\file.exe", Date.Now)
IO.File.SetLastWriteTime("C:\file.exe", Date.Now)

Format:

Code:
IO.File.SetCreationTime(Path, Date)
IO.File.SetCreationTimeUtc(Path, Date)
IO.File.SetLastAccessTime(Path, Date)
IO.File.SetLastAccessTimeUtc(Path, Date)
IO.File.SetLastWriteTime(Path, Date)

File.Attributes: The Properties of files. The VB Attributes are:

FileAttribute.Archive
FileAttribute.Directory
FileAttribute.Hidden
FileAttribute.Normal
FileAttribute.ReadOnly
FileAttribute.System
FileAttribute.Volume

Boolean: The Conditions that can connect codes. There are known booleans as:

True ( Saying something is True )
False ( Saying something is False )
= ( Saying something is equal to another Code )
<> ( Saying something is not equal to another Code )
< ( Saying something is bigger then the Code's value )
> ( Saying something is smaller then the Code's Value )

Examples:

Code:
If IO.File.Exists("C:\file.exe") = true then
If IO.File.Exists("C:\file.exe") = false then
If integer = 1 = true then
If integer <> 1 = true then
If integer < 1 = true then
If integer > 1 = true then

Writed by 1234hotmaster. Please don't leech or give credits and source if you share.

Have a Great day Smile

RE: [VB.Net] System.IO.File Functions - 1llusion - 02-20-2011

Code:
Imports System.IO

Nice guide!!! I really like it!!!

btw, in the boolean, you use double checking, which is not necessary Smile

Spoiler:

Code:
If integer = 1 = true then

The code will be read:

Quote:If integer is 1 = true = true then

Boolean is set as "true" by default Smile

That means, its more simple to use:

Code:
If integer = 1 then

it will be read:

Quote:If integer is 1 = true then

However, for boolean false you will need it Smile

so:

Code:
If integer = 1 = false then

will be read:

Quote:If integer is 1 = false then

RE: [VB.Net] System.IO.File Functions - 1234hotmaster - 02-20-2011

well, still even double checking works Tongue

Glad you liked it. More guides to come Smile

RE: [VB.Net] System.IO.File Functions - 1llusion - 02-20-2011

(02-20-2011, 05:20 PM)1234hotmaster Wrote: well, still even double checking works

Glad you liked it. More guides to come

Yeh, but it slows down the process a little bit. And also more words = more complicated Tongue

Looking forward for more great guides!!!!!!!

RE: [VB.Net] System.IO.File Functions - Coder-san - 02-20-2011

Nice thread, keep it up. Smile

You can show the return values more clearly like:

Code:
Dim aByteArray As Byte() = IO.File.ReadAllBytes("C:\file.exe")
Dim aStringArray As String() = IO.File.ReadAllLines("C:\text.txt")
Dim aString As String = IO.File.ReadAllText("C:\text.txt")

RE: [VB.Net] System.IO.File Functions - 1234hotmaster - 02-20-2011

Tnx for the examples. Edited Smile

RE: [VB.Net] System.IO.File Functions - Livelife93 - 02-21-2011

Nice things you got goin. good tut.

RE: [VB.Net] System.IO.File Functions - 9toes - 02-27-2011

thanks man ! awesome !
this must be transfered in the important thread category .

RE: [VB.Net] System.IO.File Functions - jnoon - 02-09-2014

What will be the source file name