When compiling a program, the compiler adds some optimizations that may cause your application to misbehave. For example consider the following code: // To avoid threads waiting on the critical

The const_cast operator takes the form: const_cast (expr) It is used to add or remove the “const-ness” or “volatile-ness” from a type. Consider a function, f, which takes a non-const

I have found the need to do multiple tests on dissimilar variables and objects with any failing test causing an action. Multiple embedded If…Then…ElseIf…EndIf statements are awful to look at

When an array is declared as a type where each element occupies a lot of memory (such as a complex user-defined type), sorting the array can become unacceptably slow. To

Believe it or not, you can override VB

VB6 introduced a new built-in function, CallByName(), as a member of VBA.Interaction. It lets you reference an object

Although the GetLocaleInfo API can retrieve just about any regional setting you need, VB

Simple is usually best. VB4 introduced direct assignment to Byte arrays, and VB5 later expanded that capability to include other array types as well. This code does the same thing

Locking an NT workstation has never been easy. Windows 2000 has a new function, LockWorkStation, that can lock the machine instantly with a single API call: Private Declare Function LockWorkStation

If you want to use an object in the middle of a routine and avoid declaring the object in the routine, simply use this syntax: With New .End With This

Enum NetworkAvailability As Integer Other = 1 Unknown = 2 RunningFullPower = 3 Warning = 4 InTest = 5 NotApplicable = 6 PowerOff = 7 OffLine = 8 OffDuty =

‘ Returns the system type, for example “X86-based PC” or “Power PC”‘ Requires a reference to System.Management and the respective ImportsFunction GetSystemType() As String Dim mos As New ManagementObjectSearcher _

‘ Returns the computer manufacturer name’ Requires a reference to System.Management and the respective ImportsFunction GetComputerManufacturer() As String Dim mos As New ManagementObjectSearcher _ (“SELECT * FROM Win32_ComputerSystem”) Dim mo

‘ Returns the physical memory amount, in bytes’ Requires a reference to System.Management and the respective ImportsFunction GetPhysicalMemory() As Long Dim mos As New ManagementObjectSearcher _ (“SELECT * FROM Win32_ComputerSystem”)

Enum DomainRole As Integer StandaloneWorkstation = 0 MemberWorkstation = 1 StandaloneServer = 2 MemberServer = 3 BackupDomainController = 4 PrimaryDomainController = 5End Enum’ Returns the domain role’ Requires a reference

‘ Returns the computer model’ Requires a reference to System.Management and the respective ImportsFunction GetComputerModel() As String Dim mos As New ManagementObjectSearcher _ (“SELECT * FROM Win32_ComputerSystem”) Dim mo As

‘ Returns the free physical memory amount, in bytes’ Requires a reference to System.Management and the respective ImportsFunction GetFreePhysicalMemory() As Long Dim mos As New ManagementObjectSearcher _ (“SELECT * FROM

While working with template-based controls such as the Repeater, DataList or DataGrid, it often happens that you don’t want to show just plain text as it is retrieved from the

DataGrid’s sorting functionality is not automatic, the control takes care of “just” rendering the column headers as hyperlinks, and gives you the ability to handle the click on those links,

The DataList and DataGrid controls easily allow to add a “Delete” button/hyperlink in your template. When clicked, this button/link raises a DeleteCommand event that you can handle to delete the

It happens frequently that you want to hide some input controls or links if the current user is not logged in (it runs with the anonymous account), or if the

The DataGrid’s HyperLinkColumn column is great to have a column with an hyperlink that points to an Url with a parameter whose value is taken from the data source, but