Table event handler:

You need to add a new class to write the event handler methods. I would recommend adding one class to one table.

Once create table extension class must be declared above the class mention the attribute for purpose of the class

ExtensionOf(tableStr(TableName))]

ValidateField:

 // Table Dataeventhandler - ValidateField

 [DataEventHandler(tableStr(TableName), DataEventType::ValidatedField)]

 public static void TableName_onValidatedField(Common sender, DataEventArgs e)

 {

      ValidateFieldEventArgs  event   = e as ValidateFieldEventArgs ;

      TableName buffTable             = sender as TableName;

      boolean result                  = event.parmValidateResult();

 }

 // Table-Posteventhandler for validateField

  [PostHandlerFor(tableStr(TableName), tableMethodStr(TableName, validateField))]

  public static void TableName_Post_validateField(XppPrePostArgs args)

  {

      TableName buffTable = args.getThis();

      FieldId fieldId     = args.getArg("_fieldId");

      boolean ret         = args.getReturnValue();

      //pass the return value

      args.setReturnValue(ret);

  }

initValue:

// Table Post eventhandler for table initvalue

 [PostHandlerFor(tableStr(TableName), tableMethodStr(TableName, initValue))]

 public static void TableName_Post_initValue(XppPrePostArgs args)

 {

      TableName buffTable = args.getThis() as TableName;

 }

// Table pre-event handler for initvalue

 [PreHandlerFor(tableStr(TableName), tableMethodStr(TableName, initValue))]

 public static void TableName_Pre_initValue(XppPrePostArgs args)

 {

     TableName buffTable = args.getThis() as TableName;

 }

Insert:

// Table  - insert Dataeventhandler

 [DataEventHandler(tableStr(TableName), DataEventType::Inserted)]

 public static void TableName_onInserted(Common sender, DataEventArgs e)

 {

     ValidateEventArgs   event   = e as ValidateEventArgs;

     TableName buffTable         =sender as TableName;

 }

Update:

// Table-Posteventhandler for update

 [PostHandlerFor(tableStr(TableName), tableMethodStr(TableName, updateBackStatus))]

 public static void TableName_Post_updateBackStatus(XppPrePostArgs args)

 {

     TableName buffTable = args.getThis();

 }

ModifiedField:

// Table- pre-event handler for modified field

 [PreHandlerFor(tableStr(TableName), tableMethodStr(TableName, modifiedField))]

 public static void TableName_Pre_modifiedField(XppPrePostArgs args)

 {

     TableName buffTable = args.getThis() as TableName;

 }

// Table -post-event handler for the modified field

 [PostHandlerFor(tableStr(TableName), tableMethodStr(TableName, modifiedField))]

 public static void TableNamee_Post_modifiedField(XppPrePostArgs args)

 {

      TableName buffTable = args.getThis() as TableName;   

 }





Datasource event handler:

Written:

// Datasource - event handler for written

    [FormDataSourceEventHandler(formDataSourceStr(FormName, DataSourceName), FormDataSourceEventType::Written)]

    public static void DataSourceName_OnWritten(FormDataSource sender, FormDataSourceEventArgs e)

    {

        FormRun         form              = sender.formRun();

        FormDataSource  DatasourceName_ds = form.dataSource(formDataSourceStr(FormName, DataSourceName)) as FormDataSource;

        TableName       buffTable         = DatasourceName_ds.cursor();

    }

initValue:

// Datasource - EventHandler for datasource initvalue

    [FormDataSourceEventHandler(formDataSourceStr(FormName, DataSourceName), FormDataSourceEventType::InitValue)]

    public static void DataSourceNames_OnInitValue(FormDataSource sender, FormDataSourceEventArgs e

    {

        FormRun          formRun             = sender.formRun();

        FormDataSource   DataSourceName_ds   = formRun.dataSource(formDataSourceStr(FormName,DataSourceName)) as FormDataSource;

        TableName        buffTable           = DataSourceName_ds.cursor();

    }

Activated:

//Datasource - Event handler for data source activated method

    [FormDataSourceEventHandler(formDataSourceStr(FormName, DataSourceName), FormDataSourceEventType::Activated)]

    public static void DataSourceName_OnActivated(FormDataSource sender, FormDataSourceEventArgs e)

    {

        DataSourceName buffDataSource = sender.cursor();  

        FormDataSource DataSourceName_ds = sender.formRun().dataSource("DataSourceName");

        FormRun element = sender.formRun();

    }

Init:

  // Datasource - event handler for data source init

    [FormDataSourceEventHandler(formDataSourceStr(FormName, DataSourceName), FormDataSourceEventType::Initialized)]

    public static void DataSourceName_OnInitialized(FormDataSource sender, FormDataSourceEventArgs e)

    {

        FormDataSource datasourceName_ds = sender.forRun().dataSource("DataSourceName");

        FormRun element = sender.formRun();

    }

ValidateWrite:

// DataSource - eventhandler for datasource validatewrite

    [FormDataSourceEventHandler(formDataSourceStr(FormName, DataSourceName), FormDataSourceEventType::ValidatingWrite)]

    public static void DataSourceName_OnValidatingWrite(FormDataSource sender, FormDataSourceEventArgs e)

    {

        var datasource = sender as FormDataSource;

        var args = e as FormDataSourceCancelEventArgs;

        if (args != null && datasource != null)

        {

            // write your own logic

        }

    }

Form event handler: 

OnInitialized:

// Form  - event handler for form OnInitialize

    [FormEventHandler(formStr(FormName), FormEventType::Initialized)]

    public static void FormName_OnInitialized(xFormRun sender, FormEventArgs e)

    {

        FormDataSource DataSourceName_ds = sender.dataSource(formDataSourceStr(FormName, DataSourceName));

            //Or

        FormDataSource DataSourceName_ds = sender.dataSource('DataSourceName');

    }

Closing:

   

// form- event handler for form closing

    [FormEventHandler(formStr(FormName), FormEventType::Closing)]

    public static void FormNamee_OnClosing(xFormRun sender, FormEventArgs e)

    {

        FormDataSource datasource_ds    = sender.dataSource(formDataSourceStr(FormName, DataSourceName));

        TableName      buffTable        = datasource_ds.cursor();

    }

Init:

// Form - event handler for form init.

    [PostHandlerFor(formStr(FormName), formMethodStr(FormName, init))]

    public static void FormName_Post_init(XppPrePostArgs _args)

    {

        FormRun form             = _args.getThis();

        FormDesign design        = form.design();

        FormControl variableName = design.controlName(formControlStr(FormName, controlName));

        FormControl variableName = design.controlName(formControlStr(FormName, controlName));

    }