Guid.Parse Method (System)

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.NET Framework Class Library

Guid.Parse Method

Updated: August 2011

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

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

Syntax

Visual Basic

Public Shared Function Parse ( _
	input As String _
) As Guid

public static Guid Parse(
	string input
)

Visual C++

public:
static Guid Parse(
	String^ input
)

static member Parse : 
        input:string -> Guid

Parameters

input: Type: System.String
The GUID to convert.

Return Value

Type: System.Guid
A structure that contains the value that was parsed.

Exceptions

Exception	Condition
ArgumentNullException	input is null.
FormatException	input is not in a recognized format.

Remarks

Use the TryParse method to catch any unsuccessful parse operations.

Examples

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

Visual Basic


Module Example
   Public Sub Main()
      Dim originalGuid As Guid = Guid.NewGuid()
      ' Create an array of string representations of the GUID.
      Dim stringGuids() As String = { originalGuid.ToString("B"),
                                      originalGuid.ToString("D"),
                                      originalGuid.ToString("X") }

      ' Parse each string representation.
      For Each stringGuid In stringGuids
         Try 
            Dim newGuid As Guid = Guid.Parse(stringGuid) 
            Console.WriteLine("Converted {0} to a Guid", stringGuid)
         Catch e As ArgumentNullException
            Console.WriteLine("The string to be parsed is null.")   
         Catch e As FormatException
            Console.WriteLine("Bad format: {0}", stringGuid)
         End Try     
      Next                                      
   End Sub
End Module
' 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


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.
      foreach (var stringGuid in stringGuids) {
         try {     
            Guid newGuid = Guid.Parse(stringGuid);
            Console.WriteLine("Converted {0} to a Guid", stringGuid);
         }   
         catch (ArgumentNullException) {
            Console.WriteLine("The string to be parsed is null.");   
         }                                   
         catch (FormatException) {
            Console.WriteLine("Bad format: {0}", 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

Version Information

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Platforms

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.

Reference

Guid Structure

System Namespace

Change History

Date	History	Reason
August 2011	Replaced the example.	Information enhancement.
July 2011	Removed Exception from the list of exceptions.	Content bug fix.

Date

History

Reason

August 2011

Replaced the example.

Information enhancement.

July 2011

Removed Exception from the list of exceptions.

Content bug fix.