Edit Question - KnowledgeHub

Title Body

One of my team has recently come across an interesting glitch in the matrix. If anyone can help explain this it'd be great. It is possibly a complicated to explain, so bear with me. We are building an ASP.Net application. In it we have a simple "if" statement. Guid adminId = Guid.Empty; if (mRoles.Contains("Admin")) { adminId = mUserId; } (where mRoles is a List and contains “Admin”) This works just as expected (i.e adminID is assigned the mUserId). However, when rewritten to use a ternary operator below it doesn't! (adminID is assigned Guid Empty)! Guid adminId = mRoles.Contains("Admin") ? mUserId : Guid.Empty; The developer that discovered this is on a 64-bit machine (IIS7/64-bit vista) and if he changes his settings in IIS as follows... Under "Default Application Pool" > "Advanced Settings" check "Enable 32-bit applications." Now both statements work! We think that this is something to do possibly with the fact that a Guid is a struct rather than a class and that the value is somehow being offset under a 64-bit process. I suspect the problem is similar to this... http://www.mail-archive.com/comtypes-users@lists.sourceforge.net/msg00164.html Which may explain why the first simple if statement works. (as creating the adminId variable is maybe creating a pointer and the ternary operator is not?) If anyone could shed any light on this that’d be great. Is it a compatibility bug? or our misunderstanding of combining ternary operators and structs? Thanks. UPDATE Put together a simple application and cannot reproduce it on a completely new project, so must be something else than the GUIDs. // Works (assigns mUserId to adminId) Guid adminId = true ? mUserId : Guid.Empty; </c

Tags (comma-separated) Cancel