VBA Function Lcase

Lcase function is to converted String from Uppercase to Lowercase or small capital letters for example your text String is "My Name" then returns "my name".

Syntax : Lcase(String) , Returns : Lowercase String

All Uppercase letters with be changed to Lowercase and others remain.

VBA Vode:

Option Explicit
Sub Examples_Lcasefunction()

    Dim StrTxtA As String, StrTxtB As Variant
    
    StrTxtA = "My Car Number PRS123"
    StrTxtB = Null
    Debug.Print LCase(StrTxtA) ' my car number prs123
    Debug.Print LCase(StrTxtB) ' Null
    
End Sub

Note:

For Null consider not string even we use Lcase on Null it will remain unchanged.

Read more about Lcase function, excelmacros, macro excel,
excel programming, excel vba at below links.

Microsoft Reference-Lcase-function
Other Reference-Lcase-function

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