webdynpro 下拉列表控件

1. 现在界面上添加下拉列表的控件DropDownByKey


2. 在context中创建新的node，和属性DP


3. 返回界面，绑定DP到控件DropDownByKey的SelectedKey

初始方法中代码如下：

*下拉菜单

  DATA lo_nd_drop TYPE REF TO if_wd_context_node.

  DATA lo_el_drop TYPE REF TO if_wd_context_element.

  DATA ls_drop TYPE wd_this->Element_drop.

data lo_nd_if_drop TYPE REF TO IF_WD_CONTEXT_NODE_INFO.

  data lt_value_set TYPE TABLE OF WDR_CONTEXT_ATTR_VALUE.

  data ls_value_set type WDR_CONTEXT_ATTR_VALUE.

  lo_nd_drop = wd_context->get_child_node( name = wd_this->wdctx_drop ).

  CALL METHOD LO_ND_DROP->GET_NODE_INFO

    RECEIVING

      NODE_INFO = lo_nd_if_drop.
ls_value_set-value = ‘1‘.

ls_value_set-text = ‘江苏‘.

append ls_value_set to lt_value_set.
ls_value_set-value = ‘2‘.

ls_value_set-text = ‘上海‘.

append ls_value_set to lt_value_set.
CALL METHOD LO_ND_IF_DROP->SET_ATTRIBUTE_VALUE_SET

    EXPORTING

      NAME      = ‘DP‘

      VALUE_SET = lt_value_set

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webdynpro 下拉列表控件,布布扣,bubuko.com