Int16.Parse Method (String, NumberStyles)

Parameters

• s
  Type: System.String
  A string containing a number to convert.

• style
  Type: System.Globalization.NumberStyles
  A bitwise combination of the enumeration values that indicates the style elements that can be present in s. A typical value to specify is NumberStyles.Integer.

Return Value

Type: System.Int16
A 16-bit signed integer equivalent to the number specified in s.

Imports System.Globalization

Module Example
   Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      Dim value As String
      Dim style As NumberStyles

      ' Parse a number with a thousands separator (throws an exception).
      value = "14,644"
      style = NumberStyles.None
      ParseToInt16(outputBlock, value, style)

      style = NumberStyles.AllowThousands
      ParseToInt16(outputBlock, value, style)

      ' Parse a number with a thousands separator and decimal point.
      value = "14,644.00"
      style = NumberStyles.AllowThousands Or NumberStyles.Integer Or _
              NumberStyles.AllowDecimalPoint
      ParseToInt16(outputBlock, value, style)

      ' Parse a number with a fractional component (throws an exception).
      value = "14,644.001"
      ParseToInt16(outputBlock, value, style)

      ' Parse a number in exponential notation.
      value = "145E02"
      style = style Or NumberStyles.AllowExponent
      ParseToInt16(outputBlock, value, style)

      ' Parse a number in exponential notation with a positive sign.
      value = "145E+02"
      ParseToInt16(outputBlock, value, style)

      ' Parse a number in exponential notation with a negative sign
      ' (throws an exception).
      value = "145E-02"
      ParseToInt16(outputBlock, value, style)
   End Sub

   Private Sub ParseToInt16(ByVal outputBlock As System.Windows.Controls.TextBlock, ByVal value As String, ByVal style As NumberStyles)
      Try
         Dim number As Short = Int16.Parse(value, style)
         outputBlock.Text += String.Format("Converted '{0}' to {1}.", value, number) & vbCrLf
      Catch e As FormatException
         outputBlock.Text += String.Format("Unable to parse '{0}' with style {1}.", value, _
                           style.ToString()) & vbCrLf
      Catch e As OverflowException
         outputBlock.Text += String.Format("'{0}' is out of range of the Int16 type.", value) & vbCrLf
      End Try
   End Sub
End Module
' The example displays the following output:
'       Unable to parse '14,644' with style None.
'       Converted '14,644' to 14644.
'       Converted '14,644.00' to 14644.
'       '14,644.001' is out of range of the Int16 type.
'       Converted '145E02' to 14500.
'       Converted '145E+02' to 14500.
'       '145E-02' is out of range of the Int16 type.

using System;
using System.Globalization;

public class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      string value;
      NumberStyles style;

      // Parse a number with a thousands separator (throws an exception).
      value = "14,644";
      style = NumberStyles.None;
      ParseToInt16(outputBlock, value, style);

      style = NumberStyles.AllowThousands;
      ParseToInt16(outputBlock, value, style);

      // Parse a number with a thousands separator and decimal point.
      value = "14,644.00";
      style = NumberStyles.AllowThousands | NumberStyles.Integer |
              NumberStyles.AllowDecimalPoint;
      ParseToInt16(outputBlock, value, style);

      // Parse a number with a fractional component (throws an exception).
      value = "14,644.001";
      ParseToInt16(outputBlock, value, style);

      // Parse a number in exponential notation.
      value = "145E02";
      style = style | NumberStyles.AllowExponent;
      ParseToInt16(outputBlock, value, style);

      // Parse a number in exponential notation with a positive sign.
      value = "145E+02";
      ParseToInt16(outputBlock, value, style);

      // Parse a number in exponential notation with a negative sign
      // (throws an exception).
      value = "145E-02";
      ParseToInt16(outputBlock, value, style);
   }

   private static void ParseToInt16(System.Windows.Controls.TextBlock outputBlock, string value, NumberStyles style)
   {
      try
      {
         short number = Int16.Parse(value, style);
         outputBlock.Text += String.Format("Converted '{0}' to {1}.", value, number) + "\n";
      }
      catch (FormatException)
      {
         outputBlock.Text += String.Format("Unable to parse '{0}' with style {1}.", value,
                           style.ToString()) + "\n";
      }
      catch (OverflowException)
      {
         outputBlock.Text += String.Format("'{0}' is out of range of the Int16 type.", value) + "\n";
      }
   }
}
// The example displays the following output:
//       Unable to parse '14,644' with style None.
//       Converted '14,644' to 14644.
//       Converted '14,644.00' to 14644.
//       '14,644.001' is out of range of the Int16 type.
//       Converted '145E02' to 14500.
//       Converted '145E+02' to 14500.
//       '145E-02' is out of range of the Int16 type.