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UInt16.Parse Method (String)
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Updated: August 2009
Converts the string representation of a number to its 16-bit unsigned integer equivalent.
This API is not CLS-compliant. The CLS-compliant alternative is Parse(String).
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
<CLSCompliantAttribute(False)> _
Public Shared Function Parse ( _
s As String _
) As UShort
[CLSCompliantAttribute(false)]
public static ushort Parse(
string s
)
Parameters
- s
Type: System.String
A string that represents the number to convert.
Return Value
Type: System.UInt16
A 16-bit unsigned integer equivalent to the number contained in s.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | s is nulla null reference (Nothing in Visual Basic). |
| FormatException | s is not in the correct format. |
| OverflowException | s represents a number less than UInt16.MinValue or greater than UInt16.MaxValue. |
Remarks
The s parameter should be the string representation of a number in the following form.
[ws][sign]digits[ws]
Elements in square brackets ([ and ]) are optional. The following table describes each element.
Element |
Description |
|---|---|
ws |
Optional white space. |
sign |
An optional sign. Valid sign characters are determined by the NumberFormatInfo.NegativeSign and NumberFormatInfo.PositiveSign properties of the current culture. However, the negative sign symbol can be used only with zero; otherwise, the method throws an OverflowException. |
digits |
A sequence of digits ranging from 0 to 9. Any leading zeros are ignored. |
| NoteNote: |
|---|
The string specified by the s parameter is interpreted by using the NumberStyles.Integer style. It cannot contain any group separators or decimal separator, and it cannot have a decimal portion. |
The s parameter is parsed by using the formatting information in a System.Globalization.NumberFormatInfo object that is initialized for the current system culture. For more information, see NumberFormatInfo.CurrentInfo. To parse a string by using the formatting information of a specific culture, use the Parse(String, IFormatProvider) method.
Examples
The following example calls the Parse(String) method to convert each element in a string array to an unsigned 16-bit integer.
Module Example
Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
Dim values() As String = {"-0", "17", "-12", "185", "66012", _
"+0", "", Nothing, "16.1", "28.0", _
"1,034"}
For Each value As String In values
Try
Dim number As UShort = UInt16.Parse(value)
outputBlock.Text += String.Format("'{0}' --> {1}", value, number) & vbCrLf
Catch e As FormatException
outputBlock.Text += String.Format("'{0}' --> Bad Format", value) & vbCrLf
Catch e As OverflowException
outputBlock.Text += String.Format("'{0}' --> OverflowException", value) & vbCrLf
Catch e As ArgumentNullException
outputBlock.Text += String.Format("'{0}' --> Null", value) & vbCrLf
End Try
Next
End Sub
End Module
' The example displays the following output:
' '-0' --> 0
' '17' --> 17
' '-12' --> OverflowException
' '185' --> 185
' '66012' --> OverflowException
' '+0' --> 0
' '' --> Bad Format
' '' --> Null
' '16.1' --> Bad Format
' '28.0' --> Bad Format
' '1,034' --> Bad Format
using System;
public class Example
{
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
string[] values = { "-0", "17", "-12", "185", "66012", "+0",
"", null, "16.1", "28.0", "1,034" };
foreach (string value in values)
{
try
{
ushort number = UInt16.Parse(value);
outputBlock.Text += String.Format("'{0}' --> {1}", value, number) + "\n";
}
catch (FormatException)
{
outputBlock.Text += String.Format("'{0}' --> Bad Format", value) + "\n";
}
catch (OverflowException)
{
outputBlock.Text += String.Format("'{0}' --> OverflowException", value) + "\n";
}
catch (ArgumentNullException)
{
outputBlock.Text += String.Format("'{0}' --> Null", value) + "\n";
}
}
}
}
// The example displays the following output:
// '-0' --> 0
// '17' --> 17
// '-12' --> OverflowException
// '185' --> 185
// '66012' --> OverflowException
// '+0' --> 0
// '' --> Bad Format
// '' --> Null
// '16.1' --> Bad Format
// '28.0' --> Bad Format
// '1,034' --> Bad Format
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.
See Also
Reference
Other Resources
Change History
Date |
History |
Reason |
|---|---|---|
August 2009 |
Revised extensively. |
Information enhancement. |