[gelöst] Prüfung String numerisch

Hallo allerseits,

ich habe in einen String den Wert "M1" gespeichert. Wie prüfe ich ob der Stringwert numerisch ist oder nicht? Im Beispiel wäre der String nicht numerisch

Gruß

Dai

Zuletzt geändert von dai am 28. Januar 2009 17:03, insgesamt 1-mal geändert.

Am schnellsten geht es über den Befehl EVALUATE, siehe hier: viewtopic.php?p=11597#p11597
Wenn der EVALUATE FALSE (Konvertierung in integer nicht möglich) zurück liefert, dann war der String nicht nummerisch.

Hi!

Man könnte das z.B. mit EVALUATE prüfen ...

EVALUATE (Variable)
Use this function to evaluate a string representation of a value into its normal representation. The system assigns the result to a variable.

[Ok :=] EVALUATE(Variable, String[, Number])
Ok

Data type: boolean

A return code that tells you whether or not an error occurred during the evaluation of the string.

If Ok is...
It means...

TRUE
No errors occurred during the evaluation of the string. The system assigned the value to Variable.

FALSE
Errors occurred during the evaluation of the string. The system did not modify the original value of Variable.


If you omit this optional return value and an error occurs during the evaluation of the string, a run-time error occurs. If you include it, the system assumes you will handle any errors.

Variable

Data type: boolean, integer, option, date, time, text constant, code or GUID.

Any type of variable. The value of the string is assigned to the variable.

String

Data type: text constant or code

A string containing a value of any simple C/AL data type.

Number

Data type: integer

This optional value can be used when exporting data with an XMLport. The only valid value is 9 and this indicates that the data must be converted from XML format to C/SIDE format.

Example
This example shows how the EVALUATE function works when called with three different types of variables.

Value := '010196';
Ok1 := EVALUATE(VarInteger, Value);
Ok2 := EVALUATE(VarDate, Value);
Ok3 := EVALUATE(VarYesNo, Value);
MESSAGE(Text000 + Text001 + Text002,
VarInteger, Ok1, VarDate, Ok2, VarYesNo, Ok3)

Create the following text constants in the C/AL Globals window:

Text Constant
ENU Value

Text000
'VarInteger = #1######, and the return code is: %2\'

Text001
'VarDate = #3######, and the return code is: %4\'

Text002
'VarYesNo = #5######, and the return code is: %6'


The message window shows:

VarInteger = 10196 , and the return code is: Yes
VarDate = 01/01/96, and the return code is: Yes
VarYesNo = No , and the return code is: No

This example shows that while the system can interpret Value ('010196') as both an integer and a date expression, it cannot interpret it as a boolean expression. This causes an error, shown in the return code Ok3 (=FALSE).

... also etwa so:

Code:

IsNumeric :=  EVALUATE(MyIntVariable, MyStringVariable);

Hi Natalie,

da war ich wohl zu langsam ...
Schöne Grüße,
Jörg

Hallo

hat sehr gut geklappt mit EVALUATE Vielen Dank für die schnelle Hilfe.

Gruß
Dai

da war ich wohl zu langsam ...

Du solltest es für dich positiv formulieren: Natalie war mal wieder zu schnell