Field name

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4D v20.6

Field name


Field name ( fieldPtr \| tableNum {; fieldNum} ) -> Function result

Parameter	Type	Description
fieldPtr \| tableNum	Pointer, Longint	Field pointer or Table number
fieldNum	Longint	Field number if a table number is passed as first parameter
Function result	String	Name of the field

Description

The Field name command returns the name of the field whose pointer you pass in fieldPtr or whose table and field number you pass in tableNum and fieldNum.

Example 1

This example sets the second element of the array FieldArray{1} to the name of the second field in the first table. FieldArray is a two-dimensional array:

FieldArray{1}{2}:=Field name(1;2)

Example 2

This example sets the second element of the array FieldArray{1} to the name of the field [MyTable]MyField. FieldArray is a two-dimensional array:

FieldArray{1}{2}:=Field name(->[MyTable]MyField)

Example 3

This example displays an alert. This method passes a pointer to a field:

 ALERT("The ID number for the field "+Field name($1)+" in the table "+Table name(Table($1))+" has to be longer than five characters.")