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BinaryWriter.Write Method (Int32)

Writes a four-byte signed integer to the current stream and advances the stream position by four bytes.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
Public Overridable Sub Write ( _
	value As Integer _
)

Parameters

value
Type: System.Int32

The four-byte signed integer to write.

ExceptionCondition
IOException

An I/O error occurs.

ObjectDisposedException

The stream is closed.

BinaryWriter stores this data type in little endian format.

For a list of common I/O tasks, see Common I/O Tasks.

The following code example demonstrates how to store and retrieve application settings in a file.

Imports System.IO

Module Module1
    Const fileName As String = "AppSettings.dat" 

    Sub Main()
        WriteDefaultValues()
        DisplayValues()
    End Sub 

    Sub WriteDefaultValues()
        Using writer As BinaryWriter = New BinaryWriter(File.Open(fileName, FileMode.Create))
            writer.Write(1.25F)
            writer.Write("c:\Temp")
            writer.Write(10)
            writer.Write(True)
        End Using 
    End Sub 

    Sub DisplayValues()
        Dim aspectRatio As Single 
        Dim tempDirectory As String 
        Dim autoSaveTime As Integer 
        Dim showStatusBar As Boolean 

        If (File.Exists(fileName)) Then 

            Using reader As BinaryReader = New BinaryReader(File.Open(fileName, FileMode.Open))
                aspectRatio = reader.ReadSingle()
                tempDirectory = reader.ReadString()
                autoSaveTime = reader.ReadInt32()
                showStatusBar = reader.ReadBoolean()
            End Using

            Console.WriteLine("Aspect ratio set to: " & aspectRatio)
            Console.WriteLine("Temp directory is: " & tempDirectory)
            Console.WriteLine("Auto save time set to: " & autoSaveTime)
            Console.WriteLine("Show status bar: " & showStatusBar)
        End If 
    End Sub 

End Module

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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