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In this VB.Net Tutorial/Code Example, I’m going to provide you with a simple class that allows for you to check whether Outlook is installed on the computer and also figure out which version of the Outlook it is. {code}Imports Microsoft.Win32 Namespace MS.Office Public Class Outlook Public Shared Function isInstalled() As Boolean Dim regClasse...

In this VB.Net Tutorial/Code Example, I’m going to show you how to check whether a VAT Number is valid or not. For this piece of code you will need to import “System.Text.RegularExpressions” Public Shared Function isValidVATNumber(ByVal theVATNumber As String) As Boolean Dim startChar As String = "^" Dim endChar As String = "$" Dim...

In this VB.Net Tutorial/Code Example I’m going to show you how to copy text to the Windows clipboard and then get text from the Windows clipboard again. Public Class Clipboard ''' <summary> ''' This method deals with putting text into the clipboard ''' </summary> ''' <param name="textToCopy">The text to be put ...

In this VB.Net Tutorial/Code Example I’ll be showing you how to check to see whether there is an instance of a form open in your application. ''' <summary> ''' This method deals with checking to see whether a particular form is open ''' </summary> ''' <param name="formName">The name of the form that you are looking for</par...

Because in VB.Net you’re able to have multiple instances of a form, sometimes you want to be able to get a list of all of the instances of that form that are open, the following function will do this for you. ''' <summary> ''' This method deals with getting all the instances of a form ''' </summary> ''' <param name="formName">...

If you want to get the username for the currently logged in user you can use the following code; Public Shared ReadOnly Property Username() As String Get Return System.Environment.UserName End Get End Property

If you want to know whether the application is currently being debugged you can use the following code; Public Shared ReadOnly Property DebugMode() As Boolean Get Dim rtn As Boolean = False #If DEBUG Then rtn = True #End If Return rtn End Get End Property The part of code in the if statement will only be exec...

An extremely simple way to check whether the currently logged in user has administrative rights on the local machine; Public Shared ReadOnly Property IsUserAdmin() As Boolean     Get         Return My.User.IsInRole(ApplicationServices.BuiltInRole.Administrator)     End Get End Property