GetCharCount returns the number of characters produced by decoding a range of elements in a byte array using UnicodeEncoding. : UTF8Encoding « Development « VB.Net Tutorial

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2. Development
3. UTF8Encoding

Imports System
Imports System.Text

Class UnicodeEncodingExample

    Public Shared Sub Main()
        Dim bytes() As Byte = {5, 0, 10, 0, 15, 0, 99, 0, 111, 0, 100, 0, 101, 0}

        Dim uni As New UnicodeEncoding()
        Dim charCount As Integer = uni.GetCharCount(bytes, 2, 8)
        Console.WriteLine("{0} characters needed to decode bytes.", charCount)
    End Sub
End Class