TimeSpan.TryParseExact Method (String, String, IFormatProvider, TimeSpan%)

Converts the string representation of a time interval to its TimeSpan equivalent by using the specified format and culture-specific format information, and returns a value that indicates whether the conversion succeeded. The format of the string representation must match the specified format exactly.

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

public static bool TryParseExact(
	string input,
	string format,
	IFormatProvider formatProvider,
	out TimeSpan result
)

Parameters

input
Type: System.String
A string that specifies the time interval to convert.
format
Type: System.String
A standard or custom format string that defines the required format of input.
formatProvider
Type: System.IFormatProvider
An object that supplies culture-specific formatting information.
result
Type: System.TimeSpan%
When this method returns, contains an object that represents the time interval specified by input, or TimeSpan.Zero if the conversion failed. This parameter is passed uninitialized.

Return Value

Type: System.Boolean
true if input was converted successfully; otherwise, false.

The TryParseExact(String, String, IFormatProvider, TimeSpan) method parses the string representation of a time interval, which must be in the format defined by the format parameter, except that leading and trailing white-space characters are ignored. This method is similar to the ParseExact(String, String, IFormatProvider) method, except that it does not throw an exception if the conversion fails.

The format parameter is a string that contains either a single standard format specifier, or one or more custom format specifiers that define the required format of input. For more information about valid format strings, see Standard TimeSpan Format Strings and Custom TimeSpan Format Strings.

Important noteImportant

The TryParseExact(String, String, IFormatProvider, TimeSpan) method uses the conventions of the culture specified by the formatProvider parameter only if format is a standard TimeSpan format string whose value is either "g" or "G". The "c", "t", and "T" standard format strings use the formatting conventions of the invariant culture. Custom format strings define the precise format of the input string and use literal characters to separate the components of a time interval.

The formatProvider parameter is an IFormatProvider implementation that provides culture-specific information about the format of the returned string if format is a standard format string. The formatProvider parameter can be any of the following:

If formatProvider is null, the DateTimeFormatInfo object that is associated with the current culture is used.

The following example uses the TryParseExact(String, String, IFormatProvider, TimeSpanStyles, TimeSpan) method to parse several string representations of time intervals using various format strings and cultures.


using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      string intervalString, format;
      TimeSpan interval;
      CultureInfo culture;

      // Parse hour:minute value with "g" specifier current culture.
      intervalString = "17:14";
      format = "g";
      culture = CultureInfo.CurrentCulture;
      if (TimeSpan.TryParseExact(intervalString, format, culture, out interval))
         Console.WriteLine("'{0}' --> {1}", intervalString, interval);
      else
         Console.WriteLine("Unable to parse {0}", intervalString);

      // Parse hour:minute:second value with "G" specifier.
      intervalString = "17:14:48";
      format = "G";
      culture = CultureInfo.InvariantCulture;
      if (TimeSpan.TryParseExact(intervalString, format, culture, out interval))
         Console.WriteLine("'{0}' --> {1}", intervalString, interval);
      else
         Console.WriteLine("Unable to parse {0}", intervalString);

      // Parse hours:minute.second value with "G" specifier 
      // and current (en-US) culture.     
      intervalString = "17:14:48.153";
      format = "G";
      culture = CultureInfo.CurrentCulture;
      if (TimeSpan.TryParseExact(intervalString, format, culture, out interval))
         Console.WriteLine("'{0}' --> {1}", intervalString, interval);
      else
         Console.WriteLine("Unable to parse {0}", intervalString);

      // Parse days:hours:minute.second value with "G" specifier 
      // and current (en-US) culture.     
      intervalString = "3:17:14:48.153";
      format = "G";
      culture = CultureInfo.CurrentCulture;
      if (TimeSpan.TryParseExact(intervalString, format, culture, out interval))
         Console.WriteLine("'{0}' --> {1}", intervalString, interval);
      else
         Console.WriteLine("Unable to parse {0}", intervalString);

      // Parse days:hours:minute.second value with "G" specifier 
      // and fr-FR culture.     
      intervalString = "3:17:14:48.153";
      format = "G";
      culture = new CultureInfo("fr-FR");
      if (TimeSpan.TryParseExact(intervalString, format, culture, out interval))
         Console.WriteLine("'{0}' --> {1}", intervalString, interval);
      else
         Console.WriteLine("Unable to parse {0}", intervalString);

      // Parse days:hours:minute.second value with "G" specifier 
      // and fr-FR culture.     
      intervalString = "3:17:14:48,153";
      format = "G";
      if (TimeSpan.TryParseExact(intervalString, format, culture, out interval))
         Console.WriteLine("'{0}' --> {1}", intervalString, interval);
      else
         Console.WriteLine("Unable to parse {0}", intervalString);

      // Parse a single number using the "c" standard format string. 
      intervalString = "12";
      format = "c";
      if (TimeSpan.TryParseExact(intervalString, format, null, out interval))
         Console.WriteLine("'{0}' --> {1}", intervalString, interval);
      else
         Console.WriteLine("Unable to parse {0}", intervalString);

      // Parse a single number using the "%h" custom format string. 
      format = "%h";
      if (TimeSpan.TryParseExact(intervalString, format, null, out interval))
         Console.WriteLine("'{0}' --> {1}", intervalString, interval);
      else
         Console.WriteLine("Unable to parse {0}", intervalString);

      // Parse a single number using the "%s" custom format string. 
      format = "%s";
      if (TimeSpan.TryParseExact(intervalString, format, null, out interval))
         Console.WriteLine("'{0}' --> {1}", intervalString, interval);
      else
         Console.WriteLine("Unable to parse {0}", intervalString);
   }
}
// The example displays the following output:
//       '17:14' --> 17:14:00
//       Unable to parse 17:14:48
//       Unable to parse 17:14:48.153
//       '3:17:14:48.153' --> 3.17:14:48.1530000
//       Unable to parse 3:17:14:48.153
//       '3:17:14:48,153' --> 3.17:14:48.1530000
//       '12' --> 12.00:00:00
//       '12' --> 12:00:00
//       '12' --> 00:00:12


.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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