本文整理匯總了VB.NET中System.Text.UTF8Encoding.GetByteCount方法的典型用法代碼示例。如果您正苦於以下問題：VB.NET UTF8Encoding.GetByteCount方法的具體用法？VB.NET UTF8Encoding.GetByteCount怎麽用？VB.NET UTF8Encoding.GetByteCount使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Text.UTF8Encoding的用法示例。
在下文中一共展示了UTF8Encoding.GetByteCount方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: Example
' 導入命名空間
Imports System.Text
Module Example
Public Sub Main()
Dim chars As String = "UTF8 Encoding Example"
Dim utf8 As Encoding = Encoding.UTF8
Console.WriteLine("Bytes needed to encode '{0}':", chars)
Console.WriteLine(" Maximum: {0}",
utf8.GetMaxByteCount(chars.Length))
Console.WriteLine(" Actual: {0}",
utf8.GetByteCount(chars))
Console.WriteLine(" Actual with BOM: {0}",
utf8.GetByteCount(chars) + utf8.GetPreamble().Length)
End Sub
End Module輸出：
Bytes needed to encode 'UTF8 Encoding Example': Maximum: 66 Actual: 21 Actual with BOM: 24
示例2: Example
' 導入命名空間
Imports System.Text
Module Example
Public Sub Main()
Dim uppercaseStart As Integer = &h0041
Dim uppercaseEnd As Integer = &h005a
Dim lowercaseStart As Integer = &h0061
Dim lowercaseEnd As Integer = &h007a
' Instantiate a UTF8 encoding object with BOM support.
Dim utf8 As New UTF8Encoding(True)
' Populate array with characters.
Dim chars(lowercaseEnd - lowercaseStart + uppercaseEnd - uppercaseStart + 1) As Char
Dim index As Integer = 0
For ctr As Integer = uppercaseStart To uppercaseEnd
chars(index) = ChrW(ctr)
index += 1
Next
For ctr As Integer = lowercaseStart To lowercaseEnd
chars(index) = ChrW(ctr)
index += 1
Next
' Display the bytes needed for the lowercase characters.
Console.WriteLine("Bytes needed for lowercase Latin characters:")
Console.WriteLine(" Maximum: {0,5:N0}",
utf8.GetMaxByteCount(lowercaseEnd - lowercaseStart + 1))
Console.WriteLine(" Actual: {0,5:N0}",
utf8.GetByteCount(chars, uppercaseEnd - uppercaseStart + 1,
lowercaseEnd - lowercaseStart + 1))
Console.WriteLine(" Actual with BOM: {0,5:N0}",
utf8.GetByteCount(chars, uppercaseEnd - uppercaseStart + 1,
lowercaseEnd - lowercaseStart + 1) +
utf8.GetPreamble().Length)
End Sub
End Module輸出：
Bytes needed for lowercase Latin characters: Maximum: 81 Actual: 26 Actual with BOM: 29