本文整理匯總了VB.NET中System.Byte.TryParse方法的典型用法代碼示例。如果您正苦於以下問題：VB.NET Byte.TryParse方法的具體用法？VB.NET Byte.TryParse怎麽用？VB.NET Byte.TryParse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.Byte的用法示例。
在下文中一共展示了Byte.TryParse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: ByteConversion
Module ByteConversion
Public Sub Main()
Dim byteStrings() As String = { Nothing, String.Empty, "1024",
"100.1", "100", "+100", "-100",
"000000000000000100", "00,100",
" 20 ", "FF", "0x1F"}
For Each byteString As String In byteStrings
CallTryParse(byteString)
Next
End Sub
Private Sub CallTryParse(stringToConvert As String)
Dim byteValue As Byte
Dim success As Boolean = Byte.TryParse(stringToConvert, byteValue)
If success Then
Console.WriteLine("Converted '{0}' to {1}", _
stringToConvert, byteValue)
Else
Console.WriteLine("Attempted conversion of '{0}' failed.", _
stringToConvert)
End If
End Sub
End Module輸出：
Attempted conversion of '' failed. Attempted conversion of '' failed. Attempted conversion of '1024' failed. Attempted conversion of '100.1' failed. Converted '100' to 100 Converted '+100' to 100 Attempted conversion of '-100' failed. Converted '000000000000000100' to 100 Attempted conversion of '00,100' failed. Converted ' 20 ' to 20 Attempted conversion of 'FF' failed. Attempted conversion of '0x1F' failed.
示例2: ByteConversion2
' 導入命名空間
Imports System.Globalization
Module ByteConversion2
Public Sub Main()
Dim byteString As String
Dim styles As NumberStyles
byteString = "1024"
styles = NumberStyles.Integer
CallTryParse(byteString, styles)
byteString = "100.1"
styles = NumberStyles.Integer Or NumberStyles.AllowDecimalPoint
CallTryParse(byteString, styles)
byteString = "100.0"
CallTryParse(byteString, styles)
byteString = "+100"
styles = NumberStyles.Integer Or NumberStyles.AllowLeadingSign _
Or NumberStyles.AllowTrailingSign
CallTryParse(byteString, styles)
byteString = "-100"
CallTryParse(byteString, styles)
byteString = "000000000000000100"
CallTryParse(byteString, styles)
byteString = "00,100"
styles = NumberStyles.Integer Or NumberStyles.AllowThousands
CallTryParse(byteString, styles)
byteString = "2E+3 "
styles = NumberStyles.Integer Or NumberStyles.AllowExponent
CallTryParse(byteString, styles)
byteString = "FF"
styles = NumberStyles.HexNumber
CallTryParse(byteString, styles)
byteString = "0x1F"
CallTryParse(byteString, styles)
End Sub
Private Sub CallTryParse(stringToConvert As String, styles As NumberStyles)
Dim byteValue As Byte
Dim result As Boolean = Byte.TryParse(stringToConvert, styles, Nothing, _
byteValue)
If result Then
Console.WriteLine("Converted '{0}' to {1}", _
stringToConvert, byteValue)
Else
If stringToConvert Is Nothing Then stringToConvert = ""
Console.WriteLine("Attempted conversion of '{0}' failed.", _
stringToConvert.ToString())
End If
End Sub
End Module輸出：
Attempted conversion of '1024' failed. Attempted conversion of '100.1' failed. Converted '100.0' to 100 Converted '+100' to 100 Attempted conversion of '-100' failed. Converted '000000000000000100' to 100 Converted '00,100' to 100 Attempted conversion of '2E+3 ' failed. Converted 'FF' to 255 Attempted conversion of '0x1F' failed.