STRLEN Function (Code, Text)
Gets the length of a string you define.
Syntax
Length := STRLEN(String)
Parameters
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.
Remarks
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.
Example
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.