Parse Method (String)

Int32.Parse Method (String)


Converts the string representation of a number to its 32-bit signed integer equivalent.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

public static int Parse(
	string s


Type: System.String

A string containing a number to convert.

Return Value

Type: System.Int32

A 32-bit signed integer equivalent to the number contained in s.

Exception Condition

s is null.


s is not in the correct format.


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

The s parameter contains a number of the form:


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




Optional white space.


An optional sign.


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. To explicitly define the style elements that can be present in s, use either the Int32.Parse(String, NumberStyles) or the Int32.Parse(String, NumberStyles, IFormatProvider) method.

The s parameter is parsed using the formatting information in a NumberFormatInfo object 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 Int32.Parse(String, NumberStyles, IFormatProvider) method.

The following example demonstrates how to convert a string value into a 32-bit signed integer value using the Int32.Parse(String) method. The resulting integer value is then displayed to the console.

[PermissionSet(SecurityAction.Demand, Name="FullTrust")]
public class MyServerProcessingLogClientChannelSinkProviderData : IClientChannelSinkProvider

   private IClientChannelSinkProvider myClientChannelSinkProviderNext = null;
   public MyServerProcessingLogClientChannelSinkProviderData()
   public MyServerProcessingLogClientChannelSinkProviderData(IDictionary myIDictionaryProperties,
                                                               ICollection myICollectionProviderData)

   public IClientChannelSink CreateSink(IChannelSender myChannelSenderData, String url,
      Object myRemoteChannelData)
      IClientChannelSink myClientChannelSinkNextSink = null;
      if (myClientChannelSinkProviderNext != null)
         myClientChannelSinkNextSink =
            myClientChannelSinkProviderNext.CreateSink(myChannelSenderData, url, myRemoteChannelData);
         if (myClientChannelSinkNextSink == null)
            return null;
      return new MyLoggingClientChannelSink(myClientChannelSinkNextSink);

   public IClientChannelSinkProvider Next
            return myClientChannelSinkProviderNext;
             myClientChannelSinkProviderNext = value;

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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