Int16.Parse Method

Definition

Namespace:

System

Assemblies:

netstandard.dll, System.Runtime.dll

Converts the string representation of a number to its 16-bit signed integer equivalent.

Overloads

Parse(String, NumberStyles, IFormatProvider)	Converts the string representation of a number in a specified style and culture-specific format to its 16-bit signed integer equivalent.
Parse(ReadOnlySpan<Char>, NumberStyles, IFormatProvider)	Converts the span representation of a number in a specified style and culture-specific format to its 16-bit signed integer equivalent.
Parse(ReadOnlySpan<Byte>, NumberStyles, IFormatProvider)	Parses a span of UTF-8 characters into a value.
Parse(String, IFormatProvider)	Converts the string representation of a number in a specified culture-specific format to its 16-bit signed integer equivalent.
Parse(String)	Converts the string representation of a number to its 16-bit signed integer equivalent.
Parse(ReadOnlySpan<Char>, IFormatProvider)	Parses a span of characters into a value.
Parse(ReadOnlySpan<Byte>, IFormatProvider)	Parses a span of UTF-8 characters into a value.
Parse(String, NumberStyles)	Converts the string representation of a number in a specified style to its 16-bit signed integer equivalent.

Parse(String, NumberStyles, IFormatProvider)

Source:

Int16.cs

Converts the string representation of a number in a specified style and culture-specific format to its 16-bit signed integer equivalent.

C#

public static short Parse(string s, System.Globalization.NumberStyles style, IFormatProvider? provider);

Parameters

s

String

A string containing a number to convert.

style

NumberStyles

A bitwise combination of enumeration values that indicates the style elements that can be present in s. A typical value to specify is Integer.

provider

IFormatProvider

An IFormatProvider that supplies culture-specific formatting information about s.

Returns

Int16

A 16-bit signed integer equivalent to the number specified in s.

Implements

Parse(String, NumberStyles, IFormatProvider)

Exceptions

ArgumentNullException

s is null.

ArgumentException

style is not a NumberStyles value.

-or-

style is not a combination of AllowHexSpecifier and HexNumber values.

FormatException

s is not in a format compliant with style.

OverflowException

s represents a number less than Int16.MinValue or greater than Int16.MaxValue.

-or-

s includes non-zero fractional digits.

Examples

The following example uses a variety of style and provider parameters to parse the string representations of Int16 values.

C#

string value;
short number;
NumberStyles style;
CultureInfo provider;

// Parse string using "." as the thousands separator
// and " " as the decimal separator.
value = "19 694,00";
style = NumberStyles.AllowDecimalPoint | NumberStyles.AllowThousands;
provider = new CultureInfo("fr-FR");

number = Int16.Parse(value, style, provider);
Console.WriteLine("'{0}' converted to {1}.", value, number);
// Displays:
//    '19 694,00' converted to 19694.

try
{
   number = Int16.Parse(value, style, CultureInfo.InvariantCulture);
   Console.WriteLine("'{0}' converted to {1}.", value, number);
}
catch (FormatException)
{
   Console.WriteLine("Unable to parse '{0}'.", value);
}
// Displays:
//    Unable to parse '19 694,00'.

// Parse string using "$" as the currency symbol for en_GB and
// en-US cultures.
value = "$6,032.00";
style = NumberStyles.Number | NumberStyles.AllowCurrencySymbol;
provider = new CultureInfo("en-GB");

try
{
   number = Int16.Parse(value, style, CultureInfo.InvariantCulture);
   Console.WriteLine("'{0}' converted to {1}.", value, number);
}
catch (FormatException)
{
   Console.WriteLine("Unable to parse '{0}'.", value);
}
// Displays:
//    Unable to parse '$6,032.00'.

provider = new CultureInfo("en-US");
number = Int16.Parse(value, style, provider);
Console.WriteLine("'{0}' converted to {1}.", value, number);
// Displays:
//    '$6,032.00' converted to 6032.

Remarks

The style parameter defines the style elements (such as white space or the positive sign) that are allowed in the s parameter for the parse operation to succeed. It must be a combination of bit flags from the NumberStyles enumeration. Depending on the value of style, the s parameter may include the following elements:

[ws][$][sign][digits,]digits[.fractional_digits][e[sign]digits][ws]

Or, if style includes AllowHexSpecifier:

[ws]hexdigits[ws]

Elements in square brackets ([ and ]) are optional. The following table describes each element.

Element	Description
ws	Optional white space. White space can appear at the beginning of s if style includes the NumberStyles.AllowLeadingWhite flag, or at the end of s if style includes the NumberStyles.AllowTrailingWhite flag.
$	A culture-specific currency symbol. Its position in the string is defined by the NumberFormatInfo.CurrencyPositivePattern and NumberFormatInfo.CurrencyNegativePattern property of the current culture. The current culture's currency symbol can appear in s if style includes the NumberStyles.AllowCurrencySymbol flag.
sign	An optional sign. The sign can appear at the beginning of s if style includes the NumberStyles.AllowLeadingSign flag, and it can appear at the end of s if style includes the NumberStyles.AllowTrailingSign flag. Parentheses can be used in s to indicate a negative value if style includes the NumberStyles.AllowParentheses flag.
digits	A sequence of digits from 0 through 9.
,	A culture-specific thousands separator symbol. The current culture's thousands separator symbol can appear in s if style includes the NumberStyles.AllowThousands flag.
.	A culture-specific decimal point symbol. The current culture's decimal point symbol can appear in s if style includes the NumberStyles.AllowDecimalPoint flag.
fractional_digits	A sequence of the 0 digit. Fractional digits can appear in s if style includes the NumberStyles.AllowDecimalPoint flag. If any digit other than 0 appears in fractional_digits, the method throws an OverflowException.
e	The 'e' or 'E' character, which indicates that s can be represented in exponential notation. The s parameter can represent a number in exponential notation if style includes the NumberStyles.AllowExponent flag. However, the s parameter must represent a number in the range of the Int16 data type and cannot have a non-zero fractional component.
hexdigits	A sequence of hexadecimal digits from 0 through f, or 0 through F.

Note

Any terminating NUL (U+0000) characters in s are ignored by the parsing operation, regardless of the value of the style argument.

A string with digits only (which corresponds to the NumberStyles.None style) always parses successfully. Most of the remaining NumberStyles members control elements that may be but are not required to be present in this input string. The following table indicates how individual NumberStyles members affect the elements that may be present in s.

Non-composite NumberStyles values	Elements permitted in s in addition to digits
NumberStyles.None	Decimal digits only.
NumberStyles.AllowDecimalPoint	The . and fractional_digits elements. However, fractional_digits must consist of only one or more 0 digits or an OverflowException is thrown.
NumberStyles.AllowExponent	The s parameter can also use exponential notation.
NumberStyles.AllowLeadingWhite	The ws element at the beginning of s.
NumberStyles.AllowTrailingWhite	The ws element at the end of s.
NumberStyles.AllowLeadingSign	A sign can appear before digits.
NumberStyles.AllowTrailingSign	A sign can appear after digits.
NumberStyles.AllowParentheses	The sign element in the form of parentheses enclosing the numeric value.
NumberStyles.AllowThousands	The , element.
NumberStyles.AllowCurrencySymbol	The $ element.

If the NumberStyles.AllowHexSpecifier flag is used, s must be the string representation of a hexadecimal value without a prefix. For example, "9AF3" parses successfully, but "0x9AF3" does not.. The only other flags that can be present in style are NumberStyles.AllowLeadingWhite and NumberStyles.AllowTrailingWhite. (The NumberStyles enumeration has a composite number style, NumberStyles.HexNumber, that includes both white space flags.)

The provider parameter is an IFormatProvider implementation whose GetFormat method obtains a NumberFormatInfo object. The NumberFormatInfo object provides culture-specific information about the format of s. If provider is null, the NumberFormatInfo object for the current culture is used.

See also

• NumberStyles
• ToString()
• Parsing Numeric Strings in .NET

Parse(ReadOnlySpan<Char>, NumberStyles, IFormatProvider)

Source:

Int16.cs

Converts the span representation of a number in a specified style and culture-specific format to its 16-bit signed integer equivalent.

C#

public static short Parse(ReadOnlySpan<char> s, System.Globalization.NumberStyles style = System.Globalization.NumberStyles.Integer, IFormatProvider? provider = default);

Parameters

s

ReadOnlySpan<Char>

A span containing the characters representing the number to convert.

style

NumberStyles

A bitwise combination of enumeration values that indicates the style elements that can be present in s. A typical value to specify is Integer.

provider

IFormatProvider

An IFormatProvider that supplies culture-specific formatting information about s.

Returns

Int16

A 16-bit signed integer equivalent to the number specified in s.

Implements

Parse(ReadOnlySpan<Char>, NumberStyles, IFormatProvider)

Parse(ReadOnlySpan<Byte>, NumberStyles, IFormatProvider)

Source:

Int16.cs

Parses a span of UTF-8 characters into a value.

C#

public static short Parse(ReadOnlySpan<byte> utf8Text, System.Globalization.NumberStyles style = System.Globalization.NumberStyles.Integer, IFormatProvider? provider = default);

Parameters

utf8Text

ReadOnlySpan<Byte>

The span of UTF-8 characters to parse.

style

NumberStyles

A bitwise combination of number styles that can be present in utf8Text.

provider

IFormatProvider

An object that provides culture-specific formatting information about utf8Text.

Returns

Int16

The result of parsing utf8Text.

Implements

Parse(ReadOnlySpan<Byte>, NumberStyles, IFormatProvider)

Parse(String, IFormatProvider)

Source:

Int16.cs

Converts the string representation of a number in a specified culture-specific format to its 16-bit signed integer equivalent.

C#

public static short Parse(string s, IFormatProvider? provider);

Parameters

s

String

A string containing a number to convert.

provider

IFormatProvider

An IFormatProvider that supplies culture-specific formatting information about s.

Returns

Int16

A 16-bit signed integer equivalent to the number specified in s.

Implements

Parse(String, IFormatProvider)

Exceptions

ArgumentNullException

s is null.

FormatException

s is not in the correct format.

OverflowException

s represents a number less than Int16.MinValue or greater than Int16.MaxValue.

Examples

The following example parses string representations of Int16 values with the Int16.Parse(String, IFormatProvider) method.

C#

string stringToConvert;
short number;

stringToConvert = " 214 ";
try
{
   number = Int16.Parse(stringToConvert, CultureInfo.InvariantCulture);
   Console.WriteLine("Converted '{0}' to {1}.", stringToConvert, number);
}
catch (FormatException)
{
   Console.WriteLine("Unable to parse '{0}'.", stringToConvert);
}
catch (OverflowException)
{
   Console.WriteLine("'{0'} is out of range of the Int16 data type.",
                     stringToConvert);
}

stringToConvert = " + 214";
try
{
   number = Int16.Parse(stringToConvert, CultureInfo.InvariantCulture);
   Console.WriteLine("Converted '{0}' to {1}.", stringToConvert, number);
}
catch (FormatException)
{
   Console.WriteLine("Unable to parse '{0}'.", stringToConvert);
}
catch (OverflowException)
{
   Console.WriteLine("'{0'} is out of range of the Int16 data type.",
                     stringToConvert);
}

stringToConvert = " +214 ";
try
{
   number = Int16.Parse(stringToConvert, CultureInfo.InvariantCulture);
   Console.WriteLine("Converted '{0}' to {1}.", stringToConvert, number);
}
catch (FormatException)
{
   Console.WriteLine("Unable to parse '{0}'.", stringToConvert);
}
catch (OverflowException)
{
   Console.WriteLine("'{0'} is out of range of the Int16 data type.",
                     stringToConvert);
}
// The example displays the following output to the console:
//       Converted ' 214 ' to 214.
//       Unable to parse ' + 214'.
//       Converted ' +214 ' to 214.

Remarks

The s parameter contains a number of the form:

[ws][sign]digits[ws]

Elements in square brackets ([ and ]) are optional. The following table describes each element.

Element	Description
ws	An optional white space.
sign	An optional sign.
digits	A sequence of digits ranging from 0 to 9.

The s parameter is interpreted using the NumberStyles.Integer style. In addition to decimal digits, only leading and trailing spaces together with a leading sign are allowed in s. To explicitly define the style elements together with the culture-specific formatting information that can be present in s, use the Int16.Parse(String, NumberStyles, IFormatProvider) method.

The provider parameter is an IFormatProvider implementation that obtains a NumberFormatInfo object. The NumberFormatInfo provides culture-specific information about the format of s. If provider is null, the NumberFormatInfo for the current culture is used.

See also

• ToString()
• TryParse
• Parsing Numeric Strings in .NET

Parse(String)

Source:

Int16.cs

Converts the string representation of a number to its 16-bit signed integer equivalent.

C#

public static short Parse(string s);

Parameters

s

String

A string containing a number to convert.

Returns

Int16

A 16-bit signed integer equivalent to the number contained in s.

Exceptions

ArgumentNullException

s is null.

FormatException

s is not in the correct format.

OverflowException

s represents a number less than Int16.MinValue or greater than Int16.MaxValue.

Examples

The following example demonstrates how to convert a string value into a 16-bit signed integer value using the Int16.Parse(String) method. The resulting integer value is then displayed to the console.

C#

string value;
short number;

value = " 12603 ";
try
{
   number = Int16.Parse(value);
   Console.WriteLine("Converted '{0}' to {1}.", value, number);
}
catch (FormatException)
{
   Console.WriteLine("Unable to convert '{0}' to a 16-bit signed integer.",
                     value);
}

value = " 16,054";
try
{
   number = Int16.Parse(value);
   Console.WriteLine("Converted '{0}' to {1}.", value, number);
}
catch (FormatException)
{
   Console.WriteLine("Unable to convert '{0}' to a 16-bit signed integer.",
                     value);
}

value = " -17264";
try
{
   number = Int16.Parse(value);
   Console.WriteLine("Converted '{0}' to {1}.", value, number);
}
catch (FormatException)
{
   Console.WriteLine("Unable to convert '{0}' to a 16-bit signed integer.",
                     value);
}
// The example displays the following output to the console:
//       Converted ' 12603 ' to 12603.
//       Unable to convert ' 16,054' to a 16-bit signed integer.
//       Converted ' -17264' to -17264.

Remarks

The s parameter contains a number of the 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.
digits	A sequence of digits ranging from 0 to 9.

The s parameter is interpreted using the NumberStyles.Integer style. In addition to the integer value's decimal digits, only leading and trailing spaces together with a leading sign are allowed. To explicitly define the style elements that can be present in s, use either the Int16.Parse(String, NumberStyles) or the Parse method.

The s parameter is parsed using the formatting information in a NumberFormatInfo object that is initialized for the current system culture. For more information, see CurrentInfo. To parse a string using the formatting information of some other culture, use the Int16.Parse(String, IFormatProvider) or the Int16.Parse(String, NumberStyles, IFormatProvider) method.

See also

• ToString()
• Parsing Numeric Strings in .NET

Parse(ReadOnlySpan<Char>, IFormatProvider)

Source:

Int16.cs

Parses a span of characters into a value.

C#

public static short Parse(ReadOnlySpan<char> s, IFormatProvider? provider);

Parameters

s

ReadOnlySpan<Char>

The span of characters to parse.

provider

IFormatProvider

An object that provides culture-specific formatting information about s.

Returns

Int16

The result of parsing s.

Implements

Parse(ReadOnlySpan<Char>, IFormatProvider)

Parse(ReadOnlySpan<Byte>, IFormatProvider)

Source:

Int16.cs

Parses a span of UTF-8 characters into a value.

C#

public static short Parse(ReadOnlySpan<byte> utf8Text, IFormatProvider? provider);

Parameters

utf8Text

ReadOnlySpan<Byte>

The span of UTF-8 characters to parse.

provider

IFormatProvider

An object that provides culture-specific formatting information about utf8Text.

Returns

Int16

The result of parsing utf8Text.

Implements

Parse(ReadOnlySpan<Byte>, IFormatProvider)

Parse(String, NumberStyles)

Source:

Int16.cs

Converts the string representation of a number in a specified style to its 16-bit signed integer equivalent.

C#

public static short Parse(string s, System.Globalization.NumberStyles style);

Parameters

s

String

A string containing a number to convert.

style

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 Integer.

Returns

Int16

A 16-bit signed integer equivalent to the number specified in s.

Exceptions

ArgumentNullException

s is null.

ArgumentException

style is not a NumberStyles value.

-or-

style is not a combination of AllowHexSpecifier and HexNumber values.

FormatException

s is not in a format compliant with style.

OverflowException

s represents a number less than Int16.MinValue or greater than Int16.MaxValue.

-or-

s includes non-zero fractional digits.

Examples

The following example uses the Int16.Parse(String, NumberStyles) method to parse the string representations of Int16 values using the en-US culture.

C#

using System;
using System.Globalization;

public class ParseSample
{
   public static void Main()
   {
      string value;
      NumberStyles style;

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

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

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

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

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

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

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

   private static void ParseToInt16(string value, NumberStyles style)
   {
      try
      {
         short number = Int16.Parse(value, style);
         Console.WriteLine("Converted '{0}' to {1}.", value, number);
      }
      catch (FormatException)
      {
         Console.WriteLine("Unable to parse '{0}' with style {1}.", value,
                           style.ToString());
      }
      catch (OverflowException)
      {
         Console.WriteLine("'{0}' is out of range of the Int16 type.", value);
      }
   }
}
// The example displays the following output to the console:
//       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.

Remarks

The style parameter defines the style elements (such as white space or a sign symbol) that are allowed in the s parameter for the parse operation to succeed. It must be a combination of bit flags from the NumberStyles enumeration. Depending on the value of style, the s parameter may include the following elements:

[ws][$][sign][digits,]digits[.fractional_digits][e[sign]digits][ws]

Or, if style includes AllowHexSpecifier:

[ws]hexdigits[ws]

Items in square brackets ([ and ]) are optional. The following table describes each element.

Element	Description
ws	Optional white space. White space can appear at the beginning of s if style includes the NumberStyles.AllowLeadingWhite flag, or at the end of s if style includes the NumberStyles.AllowTrailingWhite flag.
$	A culture-specific currency symbol. Its position in the string is defined by the NumberFormatInfo.CurrencyPositivePattern and NumberFormatInfo.CurrencyNegativePattern property of the current culture. The current culture's currency symbol can appear in s if style includes the NumberStyles.AllowCurrencySymbol flag.
sign	An optional sign. The sign can appear at the beginning of s if style includes the NumberStyles.AllowLeadingSign flag, and it can appear at the end of s if style includes the NumberStyles.AllowTrailingSign flag. Parentheses can be used in s to indicate a negative value if style includes the NumberStyles.AllowParentheses flag.
digits	A sequence of digits from 0 through 9.
,	A culture-specific thousands separator symbol. The current culture's thousands separator symbol can appear in s if style includes the NumberStyles.AllowThousands flag.
.	A culture-specific decimal point symbol. The current culture's decimal point symbol can appear in s if style includes the NumberStyles.AllowDecimalPoint flag.
fractional_digits	A sequence of the 0 digit. Fractional digits can appear in s if style includes the NumberStyles.AllowDecimalPoint flag. If any digit other than 0 appears in fractional_digits, the method throws an OverflowException.
e	The 'e' or 'E' character, which indicates that s can be represented in exponential notation. The s parameter can represent a number in exponential notation if style includes the NumberStyles.AllowExponent flag. However, the s parameter must represent a number in the range of the Int16 data type and cannot have a non-zero fractional component.
hexdigits	A sequence of hexadecimal digits from 0 through f, or 0 through F.

Note

Any terminating NUL (U+0000) characters in s are ignored by the parsing operation, regardless of the value of the style argument.

A string with digits only (which corresponds to the NumberStyles.None style) always parses successfully. Most of the remaining NumberStyles members control elements that may be but are not required to be present in this input string. The following table indicates how individual NumberStyles members affect the elements that may be present in s.

Non-composite NumberStyles values	Elements permitted in s in addition to digits
NumberStyles.None	Decimal digits only.
NumberStyles.AllowDecimalPoint	The . and fractional_digits elements. However, fractional_digits must consist of only one or more 0 digits or an OverflowException is thrown.
NumberStyles.AllowExponent	The s parameter can also use exponential notation.
NumberStyles.AllowLeadingWhite	The ws element at the beginning of s.
NumberStyles.AllowTrailingWhite	The ws element at the end of s.
NumberStyles.AllowLeadingSign	A sign can appear before digits.
NumberStyles.AllowTrailingSign	A sign can appear after digits.
NumberStyles.AllowParentheses	The sign element in the form of parentheses enclosing the numeric value.
NumberStyles.AllowThousands	The , element.
NumberStyles.AllowCurrencySymbol	The $ element.

If the NumberStyles.AllowHexSpecifier flag is used, s must be the string representation of a hexadecimal value without a prefix. For example, "9AF3" parses successfully, but "0x9AF3" does not. The only other flags that can be present in style are NumberStyles.AllowLeadingWhite and NumberStyles.AllowTrailingWhite. (The NumberStyles enumeration has a composite number style, NumberStyles.HexNumber, that includes both white space flags.)

The s parameter is parsed using the formatting information in a NumberFormatInfo object that is initialized for the current system culture. For more information, see NumberFormatInfo.CurrentInfo. To parse s using the formatting information of a specific culture, call the Int16.Parse(String, NumberStyles, IFormatProvider) method.

See also

• NumberStyles
• ToString()
• TryParse
• Parsing Numeric Strings in .NET