CALCFIELD Function (FieldRef)
Updates FlowFields in a record.
[Ok :=] FieldRef.CALCFIELD
Parameters
- FieldRef
Type: FieldRef The FieldRef of the FlowField that you want to update.
Property Value/Return Value
Type: Boolean
true if FlowField has been calculated; otherwise, false.
Remarks
FlowFields are virtual fields. The values in these fields are not saved in the table.
This means that you must use the CALCFIELDS function to update them. For example, if you retrieve a record using the FIND Function (RecordRef) and NEXT Function (RecordRef) functions, the FlowFields in those records are set to zero (0). Then, you can call FieldRef.CALCFIELD, to calculate the value in one of the FlowFields.
When a FlowField is a direct source expression of a control on a page or a report, the calculation is automatically performed.
You can also use the CALCFIELDS function to calculate binary large objects (BLOBs). For more information, see BLOB Data Type.
This function is similar to the CALCFIELDS Function (Record) function.
Example
The following example opens table 18 (Customer) as a RecordRef variable that is named CustRecordref. The FIND Function (RecordRef) selects the first record in the table and then loops through all the records until no records could be found. For each record, the FIELD Function (RecordRef) creates a FieldRef variable that is named MyFieldref for the Balance Due field (field 66), which is a flow field. The CALCFIELD function is called to update the field before the customer ID and the balance due are displayed. Otherwise, the balance due for every record will be set to 0. This example requires that you create the following variables and text constants in the C/AL Globals windows.
| Variable name | DataType |
|---|---|
CustRecordref |
RecordRef |
MyFieldRef |
FieldRef |
Count |
Integer |
| Text constant | ENU value |
|---|---|
Text000 |
%1: \Balance Due: %2 |
Count := 0;
CustRecordref.OPEN(18);
IF CustRecordref.FIND('-') THEN
REPEAT
MyFieldRef := CustRecordref.FIELD(66);
MyFieldRef.CALCFIELD;
MESSAGE(Text000, CustRecordref.RECORDID, MyFieldRef);
Count := Count + 1;
UNTIL CustRecordref.NEXT = 0;