Converts string in a specified style and culture-specific format to 32-bit signed integer : Convert from String « Data Types « VB.Net






  1. VB.Net
  2. Data Types
  3. Convert from String

Converts string in a specified style and culture-specific format to 32-bit signed integer

 

Imports System.Globalization

Module StringParsing
   Public Sub Main()
      Dim numericString As String
      Dim styles As NumberStyles

      numericString = "1"
      styles = NumberStyles.Integer
      CallTryParse(numericString, styles)

      numericString = "-3"
      styles = NumberStyles.None
      CallTryParse(numericString, styles)

      styles = NumberStyles.AllowLeadingSign
      CallTryParse(numericString, styles)

      numericString = "3-"
      CallTryParse(numericString, styles)

      styles = styles Or NumberStyles.AllowTrailingSign
      CallTryParse(numericString, styles)

      numericString = "$1"
      styles = NumberStyles.Integer
      CallTryParse(numericString, styles)

      styles = NumberStyles.Integer Or NumberStyles.AllowCurrencySymbol
      CallTryParse(numericString, styles)

      numericString = "1.00"
      styles = NumberStyles.Integer Or NumberStyles.AllowDecimalPoint
      CallTryParse(numericString, styles)

      numericString = "1.72"
      styles = NumberStyles.Integer Or NumberStyles.AllowDecimalPoint
      CallTryParse(numericString, styles)

      numericString = "2,593" 
      styles = NumberStyles.Integer Or NumberStyles.AllowThousands
      CallTryParse(numericString, styles)

      numericString = "1E-01"
      styles = NumberStyles.Integer Or NumberStyles.AllowExponent
      CallTryParse(numericString, styles) 

      numericString = "1E03"
      CallTryParse(numericString, styles) 

      numericString = "8c1"
      CallTryParse(numericString, NumberStyles.HexNumber)

      numericString = "0x80C1"
      CallTryParse(numericString, NumberStyles.HexNumber)
   End Sub

   Private Sub CallTryParse(stringToConvert As String, styles AS NumberStyles)
      Dim number As Integer
      Dim provider As CultureInfo

      Dim result As Boolean = Int32.TryParse(stringToConvert, styles,provider, number)
      If result Then
         Console.WriteLine("Converted '{0}' to {1}.", stringToConvert, number)
      Else
         Console.WriteLine("Attempted conversion of '{0}' failed.",Convert.ToString(stringToConvert))
      End If                                                                           
   End Sub
End Module








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