Specifications

CHAPTER 8 Displaying and Validating Data
Users Guide 285
Allowing null values
An internal InfoMaker code, NULL!, indicates null values are allowed. To use
this code, specify NULL! as the data value, then specify a display format for
nulls for the column.
❖ To define a code table as a property of the Edit edit style:
1 Select the Use Code Table check box.
2 Enter the display and data values for the code table.
3 If you want to restrict input in the column to values in the code table, select
the Validate check box.
For more information, see “Validating user input” on page 286.
❖ To define a code table as a property of the DropDownListBox edit style:
1 Enter the display and data values for the code table.
2 If you want to restrict input in the column to values in the code table, clear
the Allow Editing check box.
For more information, see “Validating user input” on page 286.
❖ To define a code table as a property of the RadioButtons edit style:
• Enter the display and data values for the code table.
❖ To define a code table as a property of the DropDownDataWindow edit
style:
1 Specify the column that provides the display values in the Display Column
box.
2 Specify the column that provides the data values in the Data Column box.
3 If you want to restrict input in the column to values in the code table, clear
the Allow Editing check box.
❖ To define a code table as a property of the EditMask edit style:
1 Select the Spin Control check box.
2 Select the Code Table check box.
3 Enter the display and data values for the code table.