Visual Basic .NET/String and character operators

String Operator String concatenation The "&" operator joins two strings together. Example: Dim String1 As String = "123" Dim String2 As String = "456" Dim String3 As String String3 = String1 & String2 ' Results in "123456". This will result in String3 being equal to "123456" The "+" operator may be used in place of "&". However, it is not recommended. Concat You may concatenate a number of strings: Dim String1 As String = "Let" Dim String2 As String = " us" Dim String3 As String = " concatenate!" Dim strOutput As String strOutput = String.concat(String1,String2,String3) ' Results in "Let us concatenate!". If you have defined a string array, such as: Dim strArr As String() = {"I", " am", " your", " automatic", " lover."} then all the elements of this array may be concatenated in a simple way: strOutput = string.concat(strArr) ' Results in "I am your automatic lover." String manipulations functions Lcase(): converts in higher case. Ucase(): converts in lower case. To create some substrings, the VB6 functions are still available: Left(): left part. Right(): right part. Mid(): middle part. InStr(): substring location into a string. Replace(): replace a substring by another one. Sub Main() Dim StringName As String = "lorem ipsum dolor sit amet" StringName = StringName.Replace("i", "o") Console.WriteLine(Mid(StringName, InStr(StringName, " "), 6)) Console.ReadLine() ' Displays " opsum" End Sub fr:Visual Basic .NET/Chaines de caractères