如何檢查兩個GUID是否與.NET（C＃）匹配？

Question

如何檢查兩個GUID是否匹配？

使用以下C＃代碼，如何匹配如果g2具有相同GUID作爲g1：

Guid g1 = new Guid("{10349469-c6f7-4061-b2ab-9fb4763aeaed}"); 
Guid g2 = new Guid("{45DF902E-2ECF-457A-BB0A-E04487F71D63}"); 

Answer 1

ToString() GUID的方法將導致consisten字符串值，因此它可以用於匹配。

檢查this DotNetFiddle進行此測試。

using System; 

public class Program 
{ 
    public static void Main() 
    { 
     // Two distinct GUIDs 
     Guid g1 = new Guid("{10349469-c6f7-4061-b2ab-9fb4763aeaed}"); 
     Guid g2 = new Guid("{45DF902E-2ECF-457A-BB0A-E04487F71D63}");  

     // GUID similar to 'g1' but with mixed case 
     Guid g1a = new Guid("{10349469-c6f7-4061-b2ab-9fb4763AEAED}"); 

     // GUID similear to 'g1' but without braces 
     Guid g1b = new Guid("10349469-c6f7-4061-b2ab-9fb4763AEAED"); 

     // Show string value of g1,g2 and g3 
     Console.WriteLine("g1 as string: {0}\n", g1.ToString()); 
     Console.WriteLine("g2 as string: {0}\n", g2.ToString()); 
     Console.WriteLine("g1a as string: {0}\n", g1a.ToString()); 
     Console.WriteLine("g1b as string: {0}\n", g1b.ToString()); 

     // g1 to g1a match result 
     bool resultA = (g1.ToString() == g1a.ToString()); 

     // g1 to g1b match result 
     bool resultB = (g1.ToString() == g1b.ToString()); 

     // Show match result 
     Console.WriteLine("g1 matches to g1a: {0}\n", resultA); 
     Console.WriteLine("g1 matches to g1b: {0}", resultB);  
    } 
} 

輸出

G1作爲字符串：10349469-c6f7-4061-b2ab-9fb4763aeaed

G2作爲字符串：45df902e-2ecf-457A-bb0a-e04487f71d63

G1A作爲字符串：10349469-c6f7-4061-b2ab-9fb4763aeaed

g1b as string：10349469-c6f7-4061-b2ab-9fb4763aeaed

G1匹配G1A：真

G1匹配G1B：真

Answer 2

您使用的Guid.Equals重載。

所以在實用性方面：

Guid g1 = ... 
Guid g2 = ... 

if (g1.Equals(g2)) { /* guids are equal */ } 

注意System.Guid實現平等的運營商一樣，所以下面也將工作：

if (g1 == g2) { /* guids are equal */ }