Visual Basic .NET/String and character operators
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String Operator
[edit | edit source]String concatenation
[edit | edit source]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
[edit | edit source]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
[edit | edit source]- 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