guid

来源： https://stackoverflow.com/questions/54227269/can-a-c-sharp-guid-be-null

来源： https://stackoverflow.com/questions/45337638/is-there-any-way-to-generate-a-uuid-in-java-that-is-identical-to-that-of-the-one

来源： https://stackoverflow.com/questions/45337638/is-there-any-way-to-generate-a-uuid-in-java-that-is-identical-to-that-of-the-one

来源： https://stackoverflow.com/questions/45337638/is-there-any-way-to-generate-a-uuid-in-java-that-is-identical-to-that-of-the-one

问题 In a Java method that receives a java.util.UUID Object, I would like to display this object as a string in the .NET/C# format (CSUUID). Currently I am only able to display it in the Java format (JUUID) : static String GetStringFromUuid (java.util.UUID myUuid){ return myUuid.toString(); } Current output: "46c7220b-1f25-0118-f013-03bd2c22d6b8" Desired output: "1f250118-220b-46c7-b8d6-222cbd0313f0" Context: The UUID is stored in MongoDB and is retrieved with the Java ETL program Talend

问题 In a Java method that receives a java.util.UUID Object, I would like to display this object as a string in the .NET/C# format (CSUUID). Currently I am only able to display it in the Java format (JUUID) : static String GetStringFromUuid (java.util.UUID myUuid){ return myUuid.toString(); } Current output: "46c7220b-1f25-0118-f013-03bd2c22d6b8" Desired output: "1f250118-220b-46c7-b8d6-222cbd0313f0" Context: The UUID is stored in MongoDB and is retrieved with the Java ETL program Talend

问题 I need to create a GUID in an unmanaged windows C++ project. I'm used to C#, where I'd use Guid.NewGuid() . What's the (unmanaged windows) C++ version? 回答1: I think CoCreateGuid is what you're after. Example: GUID gidReference; HRESULT hCreateGuid = CoCreateGuid( &gidReference ); 回答2: UuidCreate() in Win32 API has exactly the same effect. However you need to pass an address of the variable that will receive the generated value: UUID newId; UuidCreate( &newId ); I believe Guid.NewGuid() simply

问题 Im developed a software and it's now time to test it connection to a online server. Im developing in C# using Visual Studio and I'm trying to connect to a MySQL server. To be specifc Im trying to connect to a test server at db4free server. I changed my ConnectionString to: connectionString = "SERVER=db4free.net;PORT=3306;DATABASE=prpsystem;UID=database;PWD=password;"; But when I try to open the connection to check if the login is OK the visual studio shows this message error: Guid should