STRLEN Function (Code, Text)

Gets the length of a string you define.


Length := STRLEN(String)  


Type: Text constant or Code

The string for which you want to determine the length.

Property Value/Return Value

Type: Integer

The length of String.


The difference between the STRLEN function and the MAXSTRLEN Function (Code, Text) is that the STRLEN returns the actual number of characters in the input string, whereas MAXSTRLEN returns the maximum defined length of the input string.

In Microsoft Dynamics NAV 2018, if you call STRLEN on a Variant, then you get an error that the contents of the parameter are not valid. In earlier versions of Dynamics NAV, if you call STRLEN on a Variant, then 0 is returned.


This example shows the difference between the STRLEN and the MAXSTRLEN functions.

This example requires that you create the following variables and text constants in the C/AL Globals window.

Variable name DataType Length
City Text 30
MaxLength Integer Not applicable
Length Integer Not applicable
Text constant ENU value
Text000 Atlanta
Text001 The MAXSTRLEN function returns: %1,\
Text002 whereas the STRLEN function returns: %2
City := Text000;  
MaxLength := MAXSTRLEN(City);  
Length := STRLEN(City);  
MESSAGE(Text001 + Text002, MaxLength, Length);  

The message window displays the following:

The MAXSTRLEN function returns: 30

whereas the STRLEN function returns: 7

This shows that the MAXLENGTH function returns the maximum possible length according to the definition of the string variable, whereas STRLEN returns the actual length of the text.

See Also

Code Data Type
Text Data Type