TryParse Method
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Guid.TryParse Method (String, Guid)

 

Converts the string representation of a GUID to the equivalent Guid structure.

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

public static bool TryParse(
	string input,
	out Guid result
)

Parameters

input
Type: System.String

The GUID to convert.

result
Type: System.Guid

The structure that will contain the parsed value. If the method returns true, result contains a valid Guid. If the method returns false, result equals Guid.Empty.

Return Value

Type: System.Boolean

true if the parse operation was successful; otherwise, false.

This method is like the Parse method, except that instead of returning the parsed GUID, it returns false if input is null or not in a recognized format, and doesn't throw an exception. It trims any leading or trailing white space from input and converts strings in any of the five formats recognized by the ToString(String) and ToString(String, IFormatProvider)methods, as shown in the following table.

Specifier

Description

Format

N

32 digits

00000000000000000000000000000000

D

32 digits separated by hyphens

00000000-0000-0000-0000-000000000000

B

32 digits separated by hyphens, enclosed in braces

{00000000-0000-0000-0000-000000000000}

P

32 digits separated by hyphens, enclosed in parentheses

(00000000-0000-0000-0000-000000000000)

X

Four hexadecimal values enclosed in braces, where the fourth value is a subset of eight hexadecimal values that is also enclosed in braces

{0x00000000,0x0000,0x0000,{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}}

The following example creates a new GUID, converts it to three separate string representations by calling the ToString(String) method with the "B", "D", and "X" format specifiers, and then calls the TryParse method to convert the strings back to Guid values.

using System;

public class Example
{
   public static void Main()
   {
      Guid originalGuid = Guid.NewGuid();
      // Create an array of string representations of the GUID.
      string[] stringGuids = { originalGuid.ToString("B"),
                               originalGuid.ToString("D"),
                               originalGuid.ToString("X") };

      // Parse each string representation.
      Guid newGuid;
      foreach (var stringGuid in stringGuids) {
         if (Guid.TryParse(stringGuid, out newGuid))
            Console.WriteLine("Converted {0} to a Guid", stringGuid);
         else
            Console.WriteLine("Unable to convert {0} to a Guid", 
                              stringGuid);
      }                                      
   }
}
// The example displays the following output:
//    Converted {81a130d2-502f-4cf1-a376-63edeb000e9f} to a Guid
//    Converted 81a130d2-502f-4cf1-a376-63edeb000e9f to a Guid
//    Converted {0x81a130d2,0x502f,0x4cf1,{0xa3,0x76,0x63,0xed,0xeb,0x00,0x0e,0x9f}} to a Guid

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 4.0
Windows Phone Silverlight
Available since 7.1
Windows Phone
Available since 8.1
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