How to: Add Filter Controls to a Simple List Form [AX 2012 R3]

 Step 1: 
Create a form filter 



Step: 2
Step: 3

int selectionChange()
{
    int ret;
    ret = super();

    QMPurchTable_ds.executeQuery();

    return ret;

}

Step: 4 
Write the below on FORM Datasource.

// If you are filtering used Enum Values. Please find the code below.
public void executeQuery()
{
   
    AXStatus      qmStatusExe; // EnumValue

   // converting the string value to enum
    qmStatusExe = str2enum(AXStatus,QMStatus.valueStr()); // values from the filter.

   qr =  SysQuery::findOrCreateRange(QMPurchTable_q.datasourceTable(tableNum(QMPurchTable)),fieldNum(QMPurchTable,QMStatus));

    if (qmStatusExe == AXStatus::Open)
    {
        qr.value(queryValue(AXStatus::Open));
    }
    else if (qmStatusExe == AXStatus::Closed)
    {
        qr.value(queryValue(AXStatus::Closed));
    }
    else
    {
        qr.value(SysQuery::valueUnlimited());
    }
    qr.status(RangeStatus::Locked);

    super();

}