StrLower / StrUpper

StrLower / StrUpper

Converts a string to lowercase or uppercase.

OutputVar := StrLower(String , "T")
OutputVar := StrUpper(String , "T")

Parameters

OutputVar

The name of the variable in which to store the newly converted string.

String

The string to convert.

T

If this parameter is the letter T, the string will be converted to title case. For example, "GONE with the WIND" would become "Gone With The Wind".

Remarks

To detect whether a character or string is entirely uppercase or lowercase, use value is "upper"/"lower" or RegExMatch. For example:

var := "abc"
if var is "upper"
    MsgBox "var is empty or contains only uppercase characters."
if var is "lower"
    MsgBox "var is empty or contains only lowercase characters."
if RegExMatch(var, "^[a-z]+$")
    MsgBox "var is not empty and contains only lowercase ASCII characters."
if !RegExMatch(var, "[A-Z]")
    MsgBox "var does not contain any uppercase ASCII characters."

Format can also be used for case conversions, as shown below:

MsgBox Format("{:U}, {:L} and {:T}", "upper", "LOWER", "title")

Related

InStr, SubStr, StrLen, StrReplace

Example

String1 := StrUpper(String1)  ; i.e. output can be the same as input.
String2 := StrLower("ABC")  ; String2 now contains "abc"