FormListControl.deleteAll Method
Deletes all the items from a form list control.
Syntax
public boolean deleteAll()
Run On
Client
Return Value
Type: boolean
true if all the items are deleted; otherwise, false.
Examples
The following example shows a call to the deleteAll method to delete all the items from the form list control.
The while select statement retrieves account numbers from the CustTable table and then stores the data in a container. The items in the variable are added to the form list control by calling the FormListControl.addItem method.
static void createForm2(Args _args)
{
Args args;
Form form;
FormRun formRun;
FormBuildDesign formBuildDesign;
FormBuildDataSource formBuildDataSource;
FormBuildListControl formBuildListControl;
FormListControl formListControl;
FormListItem formListItem;
int idx4;
str string;
container conAccountNum;
DictTable dictTable;
CustTable custTable;
int numAccounts;
int i;
int item;
int numItems;
boolean itemsDel;
// Create the form header.
form = new Form();
// Add data sources to the form.
dictTable = new DictTable(tableNum(custTable));
formBuildDataSource = form.addDataSource(dictTable.name());
formBuildDataSource.table(dictTable.id());
// Create the form design.
formBuildDesign = form.addDesign("Design");
formBuildDesign.caption("myForm");
// Add a form list control.
formBuildListControl =
formBuildDesign.addControl(FormControlType::ListView,"List");
idx4 = formBuildListControl.id();
args = new Args();
args.object(form);
// Create the run-time form.
formRun = classfactory.formRunClass(args);
formRun.run();
formRun.detach();
formListControl = formRun.control(idx4);
// Add items to the form list control.
while select custTable
where custTable.AccountNum >= "4000" && custTable.AccountNum <= "4040"
{
conAccountNum += [[custTable.AccountNum]];
}
numAccounts = conlen(conAccountNum);
for(i = 1; i <= numAccounts; i++)
{
string = conPeek(conAccountNum,i);
formListItem = new FormListItem(string);
item = formListControl.addItem(formListItem);
}
// Delete all items.
itemsDel = formListControl.deleteAll();
}